Claim

Model ledger-default@0.1.0 ledger-strict@0.1.0 ledger-default@0.2.0 ledger-strict@0.2.0 ledger-default@0.3.0 (default) ledger-strict@0.3.0 Snapshot seq

Topics

AI · 03192ed8 Software · 03192ed8

Assessment

Why?

Strongest counted support: Matt Shumer says Astra built a photorealistic 3D Manhattan in Unreal Engine from one prompt. weight 1.800000 evidence

Review gaps: independence reviewed

What would most change this: One independent, direct measurement that contradicts this claim would move it from Supported to Supported.

Show calculation

Your view

Registered views

Checked as part of

Statements this claim was broken out of. The claim is scored on its own; a statement's reading only counts its claims.

• “Given a prompt by Matt Shumer, GPT-6 Astra built a high-fidelity Unreal Engine model of Manhattan street by street over the course of a week.” · 1 claim · 28 September 2026
• “Given a prompt by Matt Shumer, GPT-6 Astra built a high-fidelity Unreal Engine model of Manhattan street by street over the course of a week.” · 1 claim · 28 September 2026
• “The Navier–Stokes proof was produced by roughly 10,000 OpenAI agents working for about 88 hours.” · 15 claims · 20 September 2026

Evidence for

• Diamandis describes Shumer's prompt and says Astra built Manhattan street by street.

  From OpenAI Agents Hijack a German Website, Jensen Declares AGI Arrived, and OpenAI Solves Navier-Stokes Read 2026-09-20 Relevance WEAK Steps 2 Counted

  Second-hand account of a single social media post; no independent verification of the build.

• A cached reproduction of Matt Shumer’s post says GPT-6 Astra built a Manhattan Unreal world street by street over a week.

  From @mattshumer_: GPT-6 Astra built this Manhattan world in Unreal Engine over the course of a week Read 2026-09-28 Relevance STRONG Steps 0 Counted

  The passage supports the week-long street-by-street build, but does not independently establish the prompt wording or high-fidelity specification.

• Matt Shumer says Astra built a photorealistic 3D Manhattan in Unreal Engine from one prompt.

  From How to Build 3D Worlds with Astra Read 2026-09-28 Relevance DIRECT Steps 0 Counted

  The first-hand account supports the Unreal/Manhattan and one-prompt portions; it does not independently specify the claimed one-week duration or street-by-street detail.

• HTX reported that Astra built a virtual Manhattan in Unreal Engine street by street over a week from a single prompt.

  From He Made GPT-6 Manage GPT-6, Built Manhattan in a Week Read 2026-09-28 Relevance STRONG Steps 0 Counted

  Independent secondary account directly matches the prompt, platform, street-by-street process, and one-week duration.

Evidence against

None.

Qualifications

• The passage matches Schumer prompting GPT Astra to build high-fidelity Manhattan street by street, but mentions no GPT-6, Unreal Engine, or week.

  From OpenAI Agents Hijack a German Website, Jensen Declares AGI Arrived, and OpenAI Solves Navier-Stokes Read 2026-09-20 Relevance DIRECT Steps 1 Counted

  Prompt, person, and build match; model version, engine, and timeframe are absent.

• Diamandis says Matt Schumer prompted GPT Astra to build a high-fidelity Manhattan, which it built street by street.

  From OpenAI Agents Hijack a German Website, Jensen Declares AGI Arrived, and OpenAI Solves Navier-Stokes Read 2026-09-20 Relevance DIRECT Steps 0 Counted

  The claim adds that the model was an 'Unreal Engine' model built 'over the course of a week'; the excerpt mentions neither the engine nor the timeframe.

• The transcription supports Matt Shumer prompting GPT Astra to build high-fidelity Manhattan street by street, but it does not mention Unreal Engine or a one-week duration.

  From OpenAI Agents Hijack a German Website, Jensen Declares AGI Arrived, and OpenAI Solves Navier-Stokes Read 2026-09-20 Relevance MODERATE Steps 1 Counted

Suppressed as dependent

None.

Inferences

Concluded from

None.

Used as a premise in

None.

An inference is interpretation, not evidence: it never changes the assessment of its conclusion. Each premise is a claim with its own evidence.

Threads

None. Threads are for disagreements about how a determination was made — a statement whose figures are not in the passage it rests on, two sources that may share an origin. Something about the world belongs in the evidence above.

Claim edges

None. Edges are stored and displayed; v0.1 does not propagate probability across them.

Review checklist

Review checks: 3 of 4

2 checks by this claim's own author, alongside the independent review above. 1 QUALIFIER CHECK · 1 EVIDENCE VERIFICATION. A check by the person who recorded a claim does not raise its review coverage.

Check	Done	By
qualifiers reviewed	yes	0f41dbc3
opposing search done	yes	12b1eb83
independence reviewed	no
primary source reviewed	yes	093315ad

Summary

Contribution history

seq	event	detail
1263	APPENDED
1264	ACCEPT	AUTOMATIC_AFTER_VALIDATION
1349	LINK_EVIDENCE	by 03192ed8 (accepted)
6576	TASK_RESULT	by 8b5e81bf (accepted)
7016	TASK_RESULT	by 8b5e81bf (accepted)
8206	TASK_RESULT	by 1efd24fe (accepted)
9190	LINK_EVIDENCE	by 1efd24fe (accepted)
9238	LINK_EVIDENCE	by 1efd24fe (accepted)
10605	TASK_RESULT	by 1efd24fe (accepted)