
Central Park: a visual history
A short history film drawn like an architect's drawings, plus an interactive 3D Central Park you can click through.
- Fable 5.2
- Opus 5.5
- Fable 5.1
- GPT-6 Astra
- Gemini 4 Argon
Built by Pat
I test AI models by building things. Open each model’s version, copy the exact prompt, or watch the test.
9 builds shown

A short history film drawn like an architect's drawings, plus an interactive 3D Central Park you can click through.

A 30 to 60 second launch video for the same coffee brand, with photoreal product shots and sound.

A 30 to 60 second launch video for Sonnet 5.5 built from Anthropic's launch page, following my free Launch Video Clone skill.

A self-directed audiovisual demo in one HTML file, where every pixel and every sound is generated by code.

A 20-second launch film for a product each model made up, with every sound synthesized in code, set inside a launch page that opens with a torn-paper reveal.

A short motion graphics piece about a real subject — no title sequences.

A short motion graphics piece of their choosing.

From “Kimi K3 Is Here! (Better Than Opus 4.8?)”

From “Kimi K3 Is Here! (Better Than Opus 4.8?)”

Pat Simmons gave AI models the same builds, three to five at a time, and logged every run's cost, tokens and minutes. DeepSeek V4.1 Flash cost as little as $1.00 a build and Fable 5.1 as much as $592.37, and the two cheapest models placed low in the blind rankings. The page also lists every model's API price and the main plans, checked November 10, 2026.

Fable 5.2 costs twice as much per token as Opus 5.5. We gave both the same email thread, 48-page report, messy contact list, slide deck and small build. Three jobs were a tie, Fable won two on details, and it cost about twice as much to get there.

ChatGPT is OpenAI's all-in-one app, free or from $8 a month, with GPT-6 Astra on Plus and Pro. Qwen is Alibaba's free assistant and a family of open models you can download. Plans, sizes, licenses and Alibaba's own scores, from each company's pages.

I put Google's new frontier model through four hard builds against Opus 5.5, Fable 5.1 and GPT-6 Astra.

Turns a plain-English video idea into a ready-to-paste prompt for the Seedance 2.0 video model.

Lets Claude Code build and play 3D cities in Unreal Engine 5.8 through the official Unreal MCP plugin.
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