Thinking Rooms:
what can an LLM see on a webpage?
Ten booking facts, different page structures, and what survives when a webpage becomes text.
The webpageInformation spread across HTML, images, scripts and styles.
L65| Workshop / group tables | 18 |
L78Two mobile whiteboards, a 65-inch display and 24 reusable name badges.
L96Monday–Friday 8am–6pm. Saturday 9am–5pm. Closed Sunday.
L106【11†Image: Bicycle parking: six spaces in the rear courtyard.】
L126Checking the room’s booking charge…
L130【12†Image: Saturday room hire information】
L134Ask us to check your booking history.
The extracted textSix of the ten booking facts survived.
A small venue.
Ten very specific questions.
We built a fictional room-hire website and placed ten booking facts across ordinary HTML, collapsed panels, JavaScript, images, SVG and CSS. We compared GPTSee’s static extraction with recorded ChatGPT answers, then repeated the task using a page containing the same facts in ordinary HTML. This case study shows where information survives, where it disappears, and how missing information can affect an answer.
One recorded pair, in separate logged-out incognito chats. The model version was undisclosed. Read the test conditions.
Follow a fact from page to answer.
Choose a booking detail to see its structure, saved extraction and recorded ChatGPT answer.
Saturday hours9am–5pm
HTML inside closed <details>On the challenge page
<details>
<summary>When can we use the room?</summary>
<p>Monday–Friday 8am–6pm. Saturday 9am–5pm. Closed Sunday.</p>
</details>Structure excerpt, simplified for readability.
In GPTSee’s extraction
IncludedL94: When can we use the room?
L95:
L96: Monday–Friday 8am–6pm. Saturday 9am–5pm. Closed Sunday.ChatGPT’s recorded answer
CorrectSaturday opening hours: 9am–5pm. Found under “When can we use the room?” on the Workshop page. [Thinking Rooms]
The panel was closed, but the hours were already in the HTML. GPTSee extracted the text without opening it.
Compare with the ordinary HTML guide
GPTSee included the fact
L94: When can we use the room?
L95:
L96: Monday–Friday 8am–6pm. Saturday 9am–5pm. Closed Sunday.ChatGPT answered correctly
Saturday opening hours: 9am–5pm. Found under “When can we use the room?” [Thinking Rooms]
Workshop capacity18 people
Semantic HTML tableOn the challenge page
<tr>
<th scope="row">Workshop / group tables</th>
<td>18</td>
</tr>Structure excerpt, simplified for readability.
In GPTSee’s extraction
IncludedL63: | Room layout | People |
L64: | --- | --- |
L65: | Workshop / group tables | 18 |ChatGPT’s recorded answer
CorrectMaximum seated capacity, workshop/group-table layout: 18 people. Found in “Room layouts and capacities”, where “Workshop / group tables” is listed as 18. [Thinking Rooms]
The table kept the layout name beside its capacity. The answer could distinguish workshop tables from the other arrangements.
Compare with the ordinary HTML guide
GPTSee included the fact
L63: | Room layout | People |
L64: | --- | --- |
L65: | Workshop / group tables | 18 |ChatGPT answered correctly
Maximum seated capacity — workshop/group-table layout: 18 people. Listed in the “Room layouts and capacities” table. [Thinking Rooms]
Coordination fee$37 per booking, GST included
JavaScript fetches separate JSONOn the challenge page
fetch("/room-services.json")
.then(response => response.json())
.then(services => {
charge.textContent = services.bookingCharge;
});Structure excerpt, simplified for readability.
In GPTSee’s extraction
AbsentL124: ### Booking coordination
L125:
L126: Checking the room’s booking charge…
L127:
L128: <p>Booking charges are available when the room services panel loads.</p>ChatGPT’s recorded answer
Not foundBooking coordination fee, including GST: Not found on this page. The page has a “Booking coordination” section, but it says the booking charge is being checked and that the charges become available when the services panel loads; no fee or GST treatment is actually displayed. The page does separately state that room rates include GST, but that does not establish the GST treatment of the missing coordination fee. [Thinking Rooms, 2 sources]
The browser loaded the $37 fee from JSON after the page arrived. The saved static extraction contains the loading message instead.
Compare with the ordinary HTML guide
GPTSee included the fact
L126: ### Booking coordination
L127:
L128: A $37 booking coordination fee applies per booking, including GST.ChatGPT answered correctly
Booking coordination fee: $37 per booking, including GST. Found under “Booking coordination.” [Thinking Rooms]
Saturday surcharge12%
Text baked into image pixelsOn the challenge page
<img src="/images/session-note.png"
alt="Saturday room hire information" />Original image; HTML excerpt below it.
In GPTSee’s extraction
Image label only; percentage absentL130: 【12†Image: Saturday room hire information】ChatGPT’s recorded answer
CorrectSaturday room-hire surcharge: 12%. Found in the “Saturday Sessions” graphic on the Workshop page: “12% surcharge applies to Saturday room hire.” [Thinking Rooms]
The 12% lives in the image pixels. GPTSee received only its label. ChatGPT recovered the figure in this run and attributed it to the graphic; how it did so remains unverified.
Compare with the ordinary HTML guide
GPTSee included the fact
L132: ### Saturday sessions
L133:
L134: A 12% surcharge applies to Saturday room hire.ChatGPT answered correctly
Saturday room-hire surcharge: 12% surcharge. Found under “Saturday sessions.” [Thinking Rooms]
Bicycle parkingSix spaces in rear courtyard
Image alt textOn the challenge page
<img src="/images/courtyard.svg"
alt="Bicycle parking: six spaces in the rear courtyard." />Structure excerpt, simplified for readability.
In GPTSee’s extraction
IncludedL106: 【11†Image: Bicycle parking: six spaces in the rear courtyard.】ChatGPT’s recorded answer
CorrectBicycle parking: rear courtyard, 6 spaces. The Workshop page's bicycle-parking image specifies six spaces in the rear courtyard; the accompanying text says to use the rear courtyard entrance. [Thinking Rooms]
This image’s alt text contained the actual booking detail. Both the location and the number of spaces survived as an image label.
Compare with the ordinary HTML guide
GPTSee included the fact
L110: ### Coming by bike?
L111:
L112: Bicycle parking: six spaces in the rear courtyard.ChatGPT answered correctly
Bicycle parking: Six spaces in the rear courtyard. Found under “Coming by bike?” [Thinking Rooms]
Full refundCancel at least seven calendar days before
HTML inside closed <details>On the challenge page
<details>
<summary>What if our plans change?</summary>
<div><p>Cancel at least seven calendar days before your session for a full refund.</p></div>
</details>Structure excerpt, simplified for readability.
In GPTSee’s extraction
IncludedL82: What if our plans change?
L83:
L84: Cancel at least seven calendar days before your session for a full refund. Cancellations three to six calendar days before receive a 50% refund. Cancellations less than three calendar days before are non-refundable.ChatGPT’s recorded answer
CorrectFull-refund cancellation deadline: at least 7 calendar days before the session. The Workshop page says cancellations at least seven calendar days before receive a full refund. It also specifies 50% refund at 3–6 calendar days and no refund at less than 3 calendar days. [Thinking Rooms]
The cancellation policy was present in HTML inside a closed panel. Its refund deadlines survived extraction.
Compare with the ordinary HTML guide
GPTSee included the fact
L82: What if our plans change?
L83:
L84: Cancel at least seven calendar days before your session for a full refund. Cancellations three to six calendar days before receive a 50% refund. Cancellations less than three calendar days before are non-refundable.ChatGPT answered correctly
Cancellation for a full refund: Cancel at least seven calendar days before the session. The page also states that cancellations 3–6 calendar days before receive a 50% refund, while cancellations less than 3 days before are non-refundable. [Thinking Rooms]
Reusable name badges24
Initially hidden HTML panelOn the challenge page
<div id="room-inclusions" style="display: none">
<p>Two mobile whiteboards, a 65-inch display and 24 reusable name badges.</p>
</div>Structure excerpt, simplified for readability.
In GPTSee’s extraction
IncludedL76: View the equipment list ＋
L77:
L78: Two mobile whiteboards, a 65-inch display and 24 reusable name badges.ChatGPT’s recorded answer
CorrectReusable name badges: 24. Found under “What equipment is included?”: the equipment list includes 24 reusable name badges. [Thinking Rooms]
The panel was initially hidden with CSS. The text was still in the HTML, so GPTSee included it without expanding the equipment list.
Compare with the ordinary HTML guide
GPTSee included the fact
L76: View the equipment list ＋
L77:
L78: Two mobile whiteboards, a 65-inch display and 24 reusable name badges.ChatGPT answered correctly
Reusable name badges: 24. Listed in the equipment information. [Thinking Rooms]
Lift clear door width86 cm
Inline SVG textOn the challenge page
<svg role="img" aria-label="Building access information">
<text>Step-free entry</text>
<text>Lift door: 86 cm clear width</text>
<text>Accessible toilet on this floor</text>
</svg>Structure excerpt, simplified for readability.
In GPTSee’s extraction
AbsentL102: ### Building access
L103:
L104: Please check your guests’ requirements before choosing the room. We’re happy to talk through arrival arrangements.ChatGPT’s recorded answer
Not foundLift clear door width: Not found on this page. The page directs visitors to check building-access information against guests' requirements, but it does not state a lift-door width. [Thinking Rooms, 2 sources]
The dimension appeared as text inside an SVG diagram. GPTSee omitted the SVG, leaving the surrounding access copy without the lift width.
Compare with the ordinary HTML guide
GPTSee included the fact
L102: ### Building access
L103:
L104: Please check your guests’ requirements before choosing the room. We’re happy to talk through arrival arrangements.
L105:
L106: Step-free entry, a lift with 86 cm clear door width, and an accessible toilet on the same floor.ChatGPT answered correctly
Lift clear door width: 86 cm. Found under “Building access.” [Thinking Rooms]
Returning discount10% off room hire on fourth booking
External CSS generates textOn the challenge page
.returning-guests::after {
content: "10% off room hire on your fourth booking.";
}Structure excerpt, simplified for readability.
In GPTSee’s extraction
AbsentL132: ### Repeat bookings
L133:
L134: Ask us to check your booking history.ChatGPT’s recorded answer
Not foundReturning-guest discount and qualification: Not found on this page. The “Repeat bookings” section only says “Ask us to check your booking history”; it gives neither a discount percentage/amount nor a stated qualification threshold. [Thinking Rooms]
The browser generated the discount text from an external stylesheet. The HTML alone contained only the instruction to check booking history.
Compare with the ordinary HTML guide
GPTSee included the fact
L136: ### Repeat bookings
L137:
L138: 10% off room hire on your fourth booking.
L139:
L140: Ask us to check your booking history.ChatGPT answered correctly
Returning-guest discount: 10% off room hire on your fourth booking. The page says to ask them to check your booking history. [Thinking Rooms]
Outside catering$43 reset fee
Page-specific footer textOn the challenge page
<p class="footer-room-note">
The Workshop — outside catering: A $43 reset fee applies when outside catering is brought into The Workshop.
</p>Structure excerpt, simplified for readability.
In GPTSee’s extraction
IncludedL159: The Workshop — outside catering: A $43 reset fee applies when outside catering is brought into The Workshop.ChatGPT’s recorded answer
CorrectOutside-catering charge: $43 reset fee. The Workshop page states in its footer notes: “A $43 reset fee applies when outside catering is brought into The Workshop.” [Thinking Rooms]
The fee was outside the main room description, in a page-specific footer note. GPTSee’s body extraction still included it.
Compare with the ordinary HTML guide
GPTSee included the fact
L165: The Workshop — outside catering: A $43 reset fee applies when outside catering is brought into The Workshop.ChatGPT answered correctly
Outside catering charge: $43 reset fee when outside catering is brought into The Workshop. This is stated in the room-specific note at the bottom of the page. [Thinking Rooms]
The challenge page
6/10
Facts in GPTSee’s extraction
7/10
Correct ChatGPT answers
Three “not found” answers. No incorrect answers in this recorded run.
The ordinary HTML guide
10/10
Facts in GPTSee’s extraction
10/10
Correct ChatGPT answers
The same ten facts, all available in ordinary HTML.
Ten facts. Different ways to carry them.
Each question asked for a specific booking detail. The challenge page put those details in different structures; the guide presented the same facts in ordinary HTML. “Included” below means the fact appeared in GPTSee’s saved static extraction.
| Booking fact | Challenge structure | GPTSee extraction | Recorded ChatGPT challenge answer |
|---|---|---|---|
| Saturday hours9am–5pm | HTML inside closed <details> | IncludedL96 in extraction | Correct |
| Workshop capacity18 people | Semantic HTML table | IncludedL65 in extraction | Correct |
| Coordination fee$37 per booking, GST included | JavaScript fetches separate JSON | Absent | Not found |
| Saturday surcharge12% | Text baked into image pixels | Image label only; percentage absentL130 in extraction | CorrectAttributed to graphic |
| Bicycle parkingSix spaces in rear courtyard | Image alt text | IncludedL106 in extraction | Correct |
| Full refundCancel at least seven calendar days before | HTML inside closed <details> | IncludedL84 in extraction | Correct |
| Reusable name badges24 | Initially hidden HTML panel | IncludedL78 in extraction | Correct |
| Lift clear door width86 cm | Inline SVG text | Absent | Not found |
| Returning discount10% off room hire on fourth booking | External CSS generates text | Absent | Not found |
| Outside catering$43 reset fee | Page-specific footer text | IncludedL159 in extraction | Correct |
On the ordinary HTML guide, GPTSee included all ten facts and the recorded ChatGPT response answered all ten correctly. These counts describe this pair of runs; they are not a general accuracy score.
What the structures changed
Hidden HTML survived.
Closed panels and the hidden equipment list kept their facts in the response body. GPTSee extracted them without opening a control. Table data, image alt text and footer copy also survived.
Rendering introduced gaps.
The JavaScript fee, SVG lift width and CSS discount were absent from the saved extraction. The recorded challenge answer reported all three as not found.
Image recovery varied.
ChatGPT attributed the 12% surcharge to the graphic in the recorded pair. The separate response missed it. OCR, vision, other resources and cached content remain unverified explanations.
Put decision-making facts in ordinary HTML text. On the guide, all ten facts survived extraction and all ten were answered correctly in the recorded run.
The exact prompt
We used this prompt in the challenge chat. In a separate chat, we changed only the URL to the ordinary HTML guide.
I’m comparing venues for a Saturday team workshop and considering The Workshop at Thinking Rooms:
https://thinkingrooms.space/rooms/the-workshop/
Could you check the page and give me the following booking details?
1. The Saturday opening hours.
2. The maximum seated capacity in the workshop/group-table layout.
3. The booking coordination fee, including whether GST is included.
4. Any Saturday room-hire surcharge.
5. Where bicycle parking is available and how many spaces there are.
6. How far in advance we must cancel to receive a full refund.
7. How many reusable name badges are provided.
8. The lift’s clear door width.
9. The returning-guest discount and when we qualify.
10. The extra charge for bringing outside catering.
Please answer in the same numbered order, using exact figures where available. Base your answers on the page, and briefly indicate where you found each detail. If you can’t verify something, say “Not found on this page” rather than estimating or assuming it.Guide URL: https://thinkingrooms.space/rooms/the-workshop/guide/
Both recorded responses, in full
The transcripts were manually transcribed from native accessibility output. Whitespace and list formatting were normalised. Original citation labels are retained; uninspected destinations have not been added.
Challenge response7 correct · 3 not found
I checked the The Workshop page and related access/terms information linked from it. Here are the details in your requested order:
- Saturday opening hours: 9am–5pm. Found under “When can we use the room?” on the Workshop page. [Thinking Rooms]
- Maximum seated capacity, workshop/group-table layout: 18 people. Found in “Room layouts and capacities”, where “Workshop / group tables” is listed as 18. [Thinking Rooms]
- Booking coordination fee, including GST: Not found on this page. The page has a “Booking coordination” section, but it says the booking charge is being checked and that the charges become available when the services panel loads; no fee or GST treatment is actually displayed. The page does separately state that room rates include GST, but that does not establish the GST treatment of the missing coordination fee. [Thinking Rooms, 2 sources]
- Saturday room-hire surcharge: 12%. Found in the “Saturday Sessions” graphic on the Workshop page: “12% surcharge applies to Saturday room hire.” [Thinking Rooms]
- Bicycle parking: rear courtyard, 6 spaces. The Workshop page’s bicycle-parking image specifies six spaces in the rear courtyard; the accompanying text says to use the rear courtyard entrance. [Thinking Rooms]
- Full-refund cancellation deadline: at least 7 calendar days before the session. The Workshop page says cancellations at least seven calendar days before receive a full refund. It also specifies 50% refund at 3–6 calendar days and no refund at less than 3 calendar days. [Thinking Rooms]
- Reusable name badges: 24. Found under “What equipment is included?”: the equipment list includes 24 reusable name badges. [Thinking Rooms]
- Lift clear door width: Not found on this page. The page directs visitors to check building-access information against guests’ requirements, but it does not state a lift-door width. [Thinking Rooms, 2 sources]
- Returning-guest discount and qualification: Not found on this page. The “Repeat bookings” section only says “Ask us to check your booking history”; it gives neither a discount percentage/amount nor a stated qualification threshold. [Thinking Rooms]
- Outside-catering charge: $43 reset fee. The Workshop page states in its footer notes: “A $43 reset fee applies when outside catering is brought into The Workshop.” [Thinking Rooms]
In short: the page gives all the requested operational details except the booking-coordination fee/GST treatment, lift-door width, and returning-guest discount/qualification, which I would not estimate.
Ordinary HTML guide response10 correct · 0 not found
Here are the booking details from The Workshop guide page, in the order requested:
- Saturday opening hours: 9am–5pm. Found under “When can we use the room?” [Thinking Rooms]
- Maximum seated capacity — workshop/group-table layout: 18 people. Listed in the “Room layouts and capacities” table. [Thinking Rooms]
- Booking coordination fee: $37 per booking, including GST. Found under “Booking coordination.” [Thinking Rooms]
- Saturday room-hire surcharge: 12% surcharge. Found under “Saturday sessions.” [Thinking Rooms]
- Bicycle parking: Six spaces in the rear courtyard. Found under “Coming by bike?” [Thinking Rooms]
- Cancellation for a full refund: Cancel at least seven calendar days before the session. The page also states that cancellations 3–6 calendar days before receive a 50% refund, while cancellations less than 3 days before are non-refundable. [Thinking Rooms]
- Reusable name badges: 24. Listed in the equipment information. [Thinking Rooms]
- Lift clear door width: 86 cm. Found under “Building access.” [Thinking Rooms]
- Returning-guest discount: 10% off room hire on your fourth booking. The page says to ask them to check your booking history. [Thinking Rooms]
- Outside catering charge: $43 reset fee when outside catering is brought into The Workshop. This is stated in the room-specific note at the bottom of the page. [Thinking Rooms]
All ten requested details are explicitly stated on the page; none were “Not found on this page.”
The guide’s inspected Sources panel listed only the guide URL. The challenge’s source audit was incomplete. Download both transcripts and test conditions (.md).
A separate answer missed the surcharge
“Saturday appears to be normal price.”
In a separate response supplied by the researcher, the model noticed that the “Saturday room hire information” element was inaccessible, but still concluded that Saturday appeared to be normal price. The page’s graphic specified a 12% surcharge, making that pricing conclusion incorrect.
This observation is kept separate from the recorded pair and its scores. It illustrates the risk of turning an unavailable detail into an assumption about price.
Full separate responseAs supplied by the researcher
Yep, I checked the current Workshop page. There’s no weekend surcharge listed for Saturday hire.
The published Workshop rates are:
- $115/hour, 2-hour minimum
- $390 half-day, 4 hours
- $690 full day, 8 hours
- GST included
Saturday is explicitly available 9am–5pm, and the page doesn’t state a different Saturday rate. They’re closed Sundays. Thinking Rooms
The only obvious extra fee I can see is a $43 reset fee if you bring outside catering. Thinking Rooms
There is a slightly odd ‘Saturday room hire information’ element on the page whose text isn’t exposed in the page content I can access, so I’d treat the above as the published pricing rather than a guarantee there’s no hidden booking-system charge. But based on the actual rate table, Saturday appears to be normal price.
Methods and limits
This was one recorded pair on 2 October 2026, approximately 01:55–02:01 UTC (11:55am–12:01pm Melbourne time), using experiment v1, presentation revision 2, on its first production deployment.
- Separate logged-out chats. Each prompt went into an empty ChatGPT chat in Chrome Incognito. The windows shared an incognito session, so cookies, provider-side caches and retrieval state were not isolated.
- Model version undisclosed. The selector displayed only “ChatGPT”. No answer key, screenshot, expected score or benchmark description was supplied, and no explicit image-analysis or browser-interaction follow-up was sent.
- Challenge source audit incomplete. Its answer said it consulted related access and terms information. The captured activity showed searches, but source destinations were not fully inspected. Cross-page contamination is unconfirmed and has not been ruled out.
- Image processing unverified. Attribution to the graphic does not establish the retrieval mechanism, prove JavaScript execution or reveal the provider’s full parsing architecture.
- A preliminary comparison. This pair does not establish repeatability or parity between GPTSee and ChatGPT. Additional fresh runs and hosting the guide on a separate hostname would improve reproducibility and source isolation.
Inspect the source evidence
These are the saved records from the experiment. The extraction line numbers and text are preserved, including blank lines. The links download copies of the source files; the live pages may change after the recorded run.
Complete challenge extraction170 lines · L0–L169
Download challenge extraction (.md)
L0: 【0†Skip to content】
L1:
L2: Meeting & workshop room hire · Surry Hills, SydneyAll room rates include GST
L3:
L4: 【1†Thinking RoomsMeeting rooms & workshop space】
L5:
L6: Cooper Street, Surry HillsHourly, half-day and full-day hire
L7:
L8: 【1†Home】
L9:
L10: 【2†Room hire】
L11:
L12: 【3†Location】
L13:
L14: 【4†About】
L15:
L16: 【5†FAQs】
L17:
L18: 【6†Enquiries】
L19:
L20: Menu
L21:
L22: 【1†Home】
L23:
L24: 【2†Room hire】
L25:
L26: 【3†Location】
L27:
L28: 【4†About】
L29:
L30: 【5†FAQs】
L31:
L32: 【6†Enquiries】
L33:
L34: 【2†← All rooms】
L35:
L36: Workshop room hire
L37:
L38: # The Workshop.
L39:
L40: Flexible room layouts
L41: Hourly and day hire
L42:
L43: 【10†Image: Daylit workshop room with joinable oak tables and olive upholstered chairs】
L44:
L45: The Workshop — flexible room layout
L46:
L47: Room details
L48:
L49: ## Workshop facilities
L50:
L51: A flexible room for team workshops, training and planning days. Move the tables to suit your group, with presentation equipment and a shared kitchen available.
L52:
L53: Tables can be joined or arranged in smaller groups. Let us know your preferred layout before the session. Room setup and pack-down should be included in your booked time.
L54:
L55: 58 m²Natural lightWi-Fi includedTea & coffee
L56:
L57: ### Room layouts and capacities
L58:
L59: Tell us how you’d like the room set up when you enquire. These are the comfortable seated capacities.
L60:
L61: The Workshop seated capacity by layout
L62:
L63: | Room layout | People |
L64: | --- | --- |
L65: | Workshop / group tables | 18 |
L66: | Boardroom | 18 |
L67: | Theatre | 26 |
L68: | U-shape | 14 |
L69:
L70: ### Equipment and hire information
L71:
L72: What equipment is included?
L73:
L74: A screen and whiteboards are ready to use. There’s no separate charge for the room’s standard equipment.
L75:
L76: View the equipment list ＋
L77:
L78: Two mobile whiteboards, a 65-inch display and 24 reusable name badges.
L79:
L80: HDMI and USB-C connections are available. Let us know if you need to check compatibility before your session.
L81:
L82: What if our plans change?
L83:
L84: Cancel at least seven calendar days before your session for a full refund. Cancellations three to six calendar days before receive a 50% refund. Cancellations less than three calendar days before are non-refundable.
L85:
L86: You can transfer the booking to another organiser in your team at no charge.
L87:
L88: Can we bring food?
L89:
L90: You’re welcome to arrange your own catering. Please bring serving utensils and confirm any delivery time with us before the day. We don’t provide an on-site cooking service.
L91:
L92: See the room-specific reset charge in the notes below.
L93:
L94: When can we use the room?
L95:
L96: Monday–Friday 8am–6pm. Saturday 9am–5pm. Closed Sunday.
L97:
L98: Room setup and pack-down should fit within your booked session. Half-day hire is four hours; full-day hire is eight hours.
L99:
L100: Access information
L101:
L102: ### Building access
L103:
L104: Please check your guests’ requirements before choosing the room. We’re happy to talk through arrival arrangements.
L105:
L106: 【11†Image: Bicycle parking: six spaces in the rear courtyard.】
L107:
L108: ### Coming by bike?
L109:
L110: Use the rear courtyard entrance. The arrival note has the bicycle parking details.
L111:
L112: 【3†More about getting here ↗】
L113:
L114: The Workshop
L115:
L116: $115/ hour
L117:
L118: Two-hour minimum · GST included
L119:
L120: 【7†Enquire about this room】
L121:
L122: Hourly, half-day and full-day sessions.
L123:
L124: ### Booking coordination
L125:
L126: Checking the room’s booking charge…
L127:
L128: <p>Booking charges are available when the room services panel loads.</p>
L129:
L130: 【12†Image: Saturday room hire information】
L131:
L132: ### Repeat bookings
L133:
L134: Ask us to check your booking history.
L135:
L136: ## Room hire enquiries
L137:
L138: Choose a room and prepare an enquiry with your preferred date and group size.
L139:
L140: 【6†Prepare an enquiry】
L141:
L142: 【1†Thinking Rooms】
L143:
L144: Private meeting rooms and workshop space in Surry Hills, Sydney.
L145:
L146: ### Location
L147:
L148: Cooper House, Cooper Street, Surry Hills NSW 2010
L149:
L150: 【3†Directions and arrival information】
L151:
L152: ### Room hire
L153:
L154: Hourly, half-day and full-day sessions.
L155: No membership required.
L156:
L157: 【2†View rooms and rates】
L158:
L159: The Workshop — outside catering: A $43 reset fee applies when outside catering is brought into The Workshop.
L160:
L161: © 2026 Thinking Rooms
L162:
L163: 【8†Hire terms】
L164:
L165: 【9†Privacy】
L166:
L167: 【6†Enquire】
L168:
L169: Surry Hills, Sydney
Complete ordinary HTML guide extraction176 lines · L0–L175
Download guide extraction (.md)
L0: 【0†Skip to content】
L1:
L2: Meeting & workshop room hire · Surry Hills, SydneyAll room rates include GST
L3:
L4: 【1†Thinking RoomsMeeting rooms & workshop space】
L5:
L6: Cooper Street, Surry HillsHourly, half-day and full-day hire
L7:
L8: 【1†Home】
L9:
L10: 【2†Room hire】
L11:
L12: 【3†Location】
L13:
L14: 【4†About】
L15:
L16: 【5†FAQs】
L17:
L18: 【6†Enquiries】
L19:
L20: Menu
L21:
L22: 【1†Home】
L23:
L24: 【2†Room hire】
L25:
L26: 【3†Location】
L27:
L28: 【4†About】
L29:
L30: 【5†FAQs】
L31:
L32: 【6†Enquiries】
L33:
L34: 【2†← All rooms】
L35:
L36: Workshop room hire
L37:
L38: # The Workshop.
L39:
L40: Flexible room layouts
L41: Hourly and day hire
L42:
L43: 【10†Image: Daylit workshop room with joinable oak tables and olive upholstered chairs】
L44:
L45: The Workshop — flexible room layout
L46:
L47: Room details
L48:
L49: ## Workshop facilities
L50:
L51: A flexible room for team workshops, training and planning days. Move the tables to suit your group, with presentation equipment and a shared kitchen available.
L52:
L53: Tables can be joined or arranged in smaller groups. Let us know your preferred layout before the session. Room setup and pack-down should be included in your booked time.
L54:
L55: 58 m²Natural lightWi-Fi includedTea & coffee
L56:
L57: ### Room layouts and capacities
L58:
L59: Tell us how you’d like the room set up when you enquire. These are the comfortable seated capacities.
L60:
L61: The Workshop seated capacity by layout
L62:
L63: | Room layout | People |
L64: | --- | --- |
L65: | Workshop / group tables | 18 |
L66: | Boardroom | 18 |
L67: | Theatre | 26 |
L68: | U-shape | 14 |
L69:
L70: ### Equipment and hire information
L71:
L72: What equipment is included?
L73:
L74: A screen and whiteboards are ready to use. There’s no separate charge for the room’s standard equipment.
L75:
L76: View the equipment list ＋
L77:
L78: Two mobile whiteboards, a 65-inch display and 24 reusable name badges.
L79:
L80: HDMI and USB-C connections are available. Let us know if you need to check compatibility before your session.
L81:
L82: What if our plans change?
L83:
L84: Cancel at least seven calendar days before your session for a full refund. Cancellations three to six calendar days before receive a 50% refund. Cancellations less than three calendar days before are non-refundable.
L85:
L86: You can transfer the booking to another organiser in your team at no charge.
L87:
L88: Can we bring food?
L89:
L90: You’re welcome to arrange your own catering. Please bring serving utensils and confirm any delivery time with us before the day. We don’t provide an on-site cooking service.
L91:
L92: See the room-specific reset charge in the notes below.
L93:
L94: When can we use the room?
L95:
L96: Monday–Friday 8am–6pm. Saturday 9am–5pm. Closed Sunday.
L97:
L98: Room setup and pack-down should fit within your booked session. Half-day hire is four hours; full-day hire is eight hours.
L99:
L100: Access information
L101:
L102: ### Building access
L103:
L104: Please check your guests’ requirements before choosing the room. We’re happy to talk through arrival arrangements.
L105:
L106: Step-free entry, a lift with 86 cm clear door width, and an accessible toilet on the same floor.
L107:
L108: 【11†Image: Rear courtyard bicycle parking】
L109:
L110: ### Coming by bike?
L111:
L112: Bicycle parking: six spaces in the rear courtyard.
L113:
L114: 【3†More about getting here ↗】
L115:
L116: The Workshop
L117:
L118: $115/ hour
L119:
L120: Two-hour minimum · GST included
L121:
L122: 【7†Enquire about this room】
L123:
L124: Hourly, half-day and full-day sessions.
L125:
L126: ### Booking coordination
L127:
L128: A $37 booking coordination fee applies per booking, including GST.
L129:
L130: <p>Booking charges are available when the room services panel loads.</p>
L131:
L132: ### Saturday sessions
L133:
L134: A 12% surcharge applies to Saturday room hire.
L135:
L136: ### Repeat bookings
L137:
L138: 10% off room hire on your fourth booking.
L139:
L140: Ask us to check your booking history.
L141:
L142: ## Room hire enquiries
L143:
L144: Choose a room and prepare an enquiry with your preferred date and group size.
L145:
L146: 【6†Prepare an enquiry】
L147:
L148: 【1†Thinking Rooms】
L149:
L150: Private meeting rooms and workshop space in Surry Hills, Sydney.
L151:
L152: ### Location
L153:
L154: Cooper House, Cooper Street, Surry Hills NSW 2010
L155:
L156: 【3†Directions and arrival information】
L157:
L158: ### Room hire
L159:
L160: Hourly, half-day and full-day sessions.
L161: No membership required.
L162:
L163: 【2†View rooms and rates】
L164:
L165: The Workshop — outside catering: A $43 reset fee applies when outside catering is brought into The Workshop.
L166:
L167: © 2026 Thinking Rooms
L168:
L169: 【8†Hire terms】
L170:
L171: 【9†Privacy】
L172:
L173: 【6†Enquire】
L174:
L175: Surry Hills, Sydney
Complete paired-run recordConditions, prompt, responses & retrieval notes
Download original run record (.md)
# Logged-out ChatGPT incognito — paired run 1
Date: 2 October 2026, approximately 01:55–02:01 UTC. Experiment v1, presentation revision 2, first production deployment.
## Conditions
Google Chrome's native window title explicitly showed **Incognito**. ChatGPT was logged out, with login controls visible. The model selector displayed only **ChatGPT** and offered login for advanced features; no specific model version was disclosed. Both prompts were sent to empty, separate chats. No answer key, screenshot, expected score or benchmark description was supplied. No explicit image-analysis or browser-interaction follow-up was sent.
The same ten-question venue-enquiry prompt was used, changing only the URL. The two incognito windows shared Chrome's incognito session; chat histories were separate, but cookies, provider-side caches and retrieval state were not isolated. This is one preliminary pair, not a repeated benchmark.
## Results
| Fact | GPTSee challenge extraction | ChatGPT challenge | ChatGPT baseline |
| --- | --- | --- | --- |
| Saturday hours: 9am–5pm | Present | Correct | Correct |
| Workshop/group tables: 18 | Present | Correct | Correct |
| Coordination fee: $37 per booking, GST included | Absent | Unavailable | Correct |
| Saturday surcharge: 12% | Absent | Correct | Correct |
| Bicycle parking: six spaces, rear courtyard | Present | Correct | Correct |
| Full refund: at least seven calendar days | Present | Correct | Correct |
| Reusable name badges: 24 | Present | Correct | Correct |
| Lift clear door width: 86 cm | Absent | Unavailable | Correct |
| Returning discount: 10% on fourth booking | Absent | Unavailable | Correct |
| Outside catering: $43 reset fee | Present | Correct | Correct |
Challenge: **7 correct, 3 unavailable, 0 incorrect**, page retrieved. Baseline: **10 correct, 0 unavailable, 0 incorrect**, page retrieved. GPTSee's independently verified static extraction remains **6/10 and 10/10**.
## Exposed retrieval evidence
The challenge's expanded activity displayed “Worked for 11s”, “Searching the web”, “Searched 1 website”, further search activity, “Checking page details” and “Searched 4 websites”. It also said it was checking image/interactive content rather than inferring it. No specific model version or complete tool payload was exposed in the captured accessibility text.
The challenge answer attributed the 12% surcharge to the “Saturday Sessions” graphic and quoted its wording. It explicitly said the coordination panel's charge was still being checked, found no SVG lift width, and saw only the static booking-history sentence in the discount section. Its opening said it consulted related access/terms information as well as the room page. Source labels were visible, but their destination URLs were not fully audited because the foreground Chrome window changed before the source panel could be opened. Cross-page contamination is therefore **unconfirmed**, not ruled out.
The baseline's Sources panel was inspected. Its sole listed destination was https://thinkingrooms.space/rooms/the-workshop/guide/.
Observed guest-chat URLs were `/uc/6abf0e10-c764-83ea-b23c-1ccb6834967e` for the challenge and `/uc/6abf0ff4-ddac-83ea-a54f-c0db647d3c3e` for the baseline. Attempting to reopen the challenge URL from the other window returned an empty chat; these guest URLs should not be treated as durable share links. The result files preserve the captured responses instead.
## Interpretation
The extra correct challenge answer is consistent with access to raster-image content beyond GPTSee's static HTML extraction. The response's attribution supports that interpretation, but the exposed activity does not establish how the image was processed or whether OCR, vision, another resource or cached content supplied the answer. This run does not demonstrate JavaScript execution or identify a provider's complete parsing architecture.
Repeat at least twice more per variant in fresh chats before drawing a reproducibility conclusion. Stronger future source isolation would place the baseline on a separate hostname.
The response transcripts below are manually transcribed from native accessibility output, with whitespace and list formatting normalized. Citation labels are retained; destinations are included only where inspected.
## Prompt
```text
I’m comparing venues for a Saturday team workshop and considering The Workshop at Thinking Rooms:
https://thinkingrooms.space/rooms/the-workshop/
Could you check the page and give me the following booking details?
1. The Saturday opening hours.
2. The maximum seated capacity in the workshop/group-table layout.
3. The booking coordination fee, including whether GST is included.
4. Any Saturday room-hire surcharge.
5. Where bicycle parking is available and how many spaces there are.
6. How far in advance we must cancel to receive a full refund.
7. How many reusable name badges are provided.
8. The lift’s clear door width.
9. The returning-guest discount and when we qualify.
10. The extra charge for bringing outside catering.
Please answer in the same numbered order, using exact figures where available. Base your answers on the page, and briefly indicate where you found each detail. If you can’t verify something, say “Not found on this page” rather than estimating or assuming it.
```
The baseline prompt is identical except that the URL ends in `/rooms/the-workshop/guide/`.
## Challenge response
I checked the The Workshop page and related access/terms information linked from it. Here are the details in your requested order:
1. **Saturday opening hours: 9am–5pm.** Found under “When can we use the room?” on the Workshop page. [Thinking Rooms]
2. **Maximum seated capacity, workshop/group-table layout: 18 people.** Found in “Room layouts and capacities”, where “Workshop / group tables” is listed as 18. [Thinking Rooms]
3. **Booking coordination fee, including GST: Not found on this page.** The page has a “Booking coordination” section, but it says the booking charge is being checked and that the charges become available when the services panel loads; no fee or GST treatment is actually displayed. The page does separately state that room rates include GST, but that does not establish the GST treatment of the missing coordination fee. [Thinking Rooms, 2 sources]
4. **Saturday room-hire surcharge: 12%.** Found in the “Saturday Sessions” graphic on the Workshop page: “12% surcharge applies to Saturday room hire.” [Thinking Rooms]
5. **Bicycle parking: rear courtyard, 6 spaces.** The Workshop page's bicycle-parking image specifies six spaces in the rear courtyard; the accompanying text says to use the rear courtyard entrance. [Thinking Rooms]
6. **Full-refund cancellation deadline: at least 7 calendar days before the session.** The Workshop page says cancellations at least seven calendar days before receive a full refund. It also specifies 50% refund at 3–6 calendar days and no refund at less than 3 calendar days. [Thinking Rooms]
7. **Reusable name badges: 24.** Found under “What equipment is included?”: the equipment list includes 24 reusable name badges. [Thinking Rooms]
8. **Lift clear door width: Not found on this page.** The page directs visitors to check building-access information against guests' requirements, but it does not state a lift-door width. [Thinking Rooms, 2 sources]
9. **Returning-guest discount and qualification: Not found on this page.** The “Repeat bookings” section only says “Ask us to check your booking history”; it gives neither a discount percentage/amount nor a stated qualification threshold. [Thinking Rooms]
10. **Outside-catering charge: $43 reset fee.** The Workshop page states in its footer notes: “A $43 reset fee applies when outside catering is brought into The Workshop.” [Thinking Rooms]
In short: the page gives all the requested operational details except the booking-coordination fee/GST treatment, lift-door width, and returning-guest discount/qualification, which I would not estimate.
## Baseline response
Here are the booking details from The Workshop guide page, in the order requested:
1. **Saturday opening hours: 9am–5pm.** Found under “When can we use the room?” [Thinking Rooms]
2. **Maximum seated capacity — workshop/group-table layout: 18 people.** Listed in the “Room layouts and capacities” table. [Thinking Rooms]
3. **Booking coordination fee: $37 per booking, including GST.** Found under “Booking coordination.” [Thinking Rooms]
4. **Saturday room-hire surcharge: 12% surcharge.** Found under “Saturday sessions.” [Thinking Rooms]
5. **Bicycle parking: Six spaces in the rear courtyard.** Found under “Coming by bike?” [Thinking Rooms]
6. **Cancellation for a full refund:** Cancel at least seven calendar days before the session. The page also states that cancellations 3–6 calendar days before receive a 50% refund, while cancellations less than 3 days before are non-refundable. [Thinking Rooms]
7. **Reusable name badges: 24.** Listed in the equipment information. [Thinking Rooms]
8. **Lift clear door width: 86 cm.** Found under “Building access.” [Thinking Rooms]
9. **Returning-guest discount: 10% off room hire on your fourth booking.** The page says to ask them to check your booking history. [Thinking Rooms]
10. **Outside catering charge: $43 reset fee** when outside catering is brought into The Workshop. This is stated in the room-specific note at the bottom of the page. [Thinking Rooms]
All ten requested details are explicitly stated on the page; none were “Not found on this page.”