Four kart racers from one prompt

Alexey Fateev ran one Mario Kart–style prompt four ways: DeepSeek and GPT-6 Astra alone, then each with the other as a subagent. Four builds, each from scratch.

Sep 15, 2026last month

Alexey Fateev wanted a comparison, so he built the comparison four times. Same kart-racer prompt. DeepSeek with an Astra subagent, Astra with a DeepSeek subagent, then each model alone, because a pair of results was not enough.

Astra stayed on medium reasoning. DeepSeek stayed on max. Every version started from scratch. A Mario Kart–style game is a useful instrument here: a track, a camera and a lap are easy to see and hard to fake for ninety seconds.

The post is less about any one winner than about the spread. Four garages, one assignment, and a minute and a half of them driving.

Four kart racers from one prompt

Made with

Gpt 6 Astra — one of the two builders, alone and as a subagent

Alexey Fateev

@superalesha

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I gave DeepSeek an Astra subagent. Then I gave Astra a DeepSeek subagent. Then I made both work alone, because apparently I needed 4 versions of Mario Kart. Same game prompt, each build from scratch. Astra on medium reasoning, DeepSeek on max throughout. I just wanted to see https://t.co/R7CUNbhu8Y

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Captured when this was curated, not live. — as of Oct 17, 2026

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