Fable 5.2 takes MazeBench frontier, matches GPT-6 Astra puzzle-solving
patience_cave · x · 2026-11-11
Fable 5.2 is the new frontier on MazeBench, making substantial progress over previous iterations and now matching GPT-6 Astra's puzzle-solving; exceeding it may require a costlier or weeks-longer run. Per the thread details: it scores 15% at roughly half Astra's price and is by far the most token-efficient model over a 40-hour run. The attached visualization compares exploration footprints of claude-fable-5-1, claude-opus-5-5 and claude-fable-5-2, showing dramatically wider coverage.
Related event: MazeBench Update: Fable 5.2 Matches GPT-6 Astra at Half the Price(3 posts)→
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