Epoch AI reports Claude Fable 5.2 at record 174 on its capabilities index

1. 4:22 PM
   Epoch AI@EpochAIResearchOfficial

   Epoch AI shares full evaluation results for Claude Fable 5.2

   AIEpoch AI says its full set of results for Claude Fable 5.2 is available on its website. The post links to a dedicated Claude Fable 5.2 page on epoch.ai, but gives no benchmark scores in the text.

2. 4:22 PM
   Epoch AI@EpochAIResearchOfficial

   Claude Fable 5.2 sets Epoch Capabilities Index record at 174

   AIEpoch AI reports that Claude Fable 5.2 scores 174 on the Epoch Capabilities Index, a new record above GPT-6 Astra's previous high of 169. Epoch says the score exceeds what the pre-Astra trend for reasoning models would have predicted. The ranking is based on Epoch's own benchmarks run before launch, and the index may change as more results are added.

   

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