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Video by Mr_Hallow (@mxajeel) · originally posted on XView original post on X

Claude Fable 5.1 vs GPT-6 Astra

Simple GTA game: walk, drive, steal cars

Mr_Hallow@mxajeel

5 likes2,417 views

Claude Fable 5.1 (High) and GPT-6 Astra (Extra high) get the same prompt for a simple GTA game: walking, driving, stealing cars. Per the author Astra worked a lot better; run details as stated.

Models

ModelEffortTokensNotes
Claude Fable 5.1AnthropicHigh4.6M tokens~6 h 15 min; controller + 13 implementer + 19 reviewer agents
GPT-6 AstraOpenAIExtra high7.2M tokens~55 min of work across two runs; 6.74M cached input tokensWritten as “Astra 6”

Details

KindSide-by-side (same post, same prompt)
TaskSimple GTA game: walk, drive, steal cars
Author’s verdictThe Astra build worked a lot better than the Fable one. — @mxajeel’s view (paraphrased)
TopicOne-shot GTA clone
CategoryGames
ModeAgentic
Posted
Video length73 s
Likes / views5 / 2,417 · as of Oct 18, 2026
Bookmarks6
SponsoredNo
Original postx.com/mxajeel/status/2096626101586129368

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