AnalysisAI ModelsSeptember 12, 2026

Reddit user pits Opus 5, Fable 5.1 and GPT-6 Astra on galaxy collision sim

A r/ClaudeAI user gave Fable 5.1, Opus 5 and GPT-6 Astra the same prompt to simulate the Milky Way-Andromeda collision, spending roughly $5 in tokens per model. The poster judged Opus 5's output the best of the three.

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