Built by Pat
I test AI models by building things. Open each model’s version, copy the exact prompt, or watch the test.
2 builds shown
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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