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Anthropic

A world in the sky: every notable AI system from Anthropic in Epoch AI’s data.

Notable systems
21, Mar 2023 to Sep 2026
Best capability score
165.0: Claude Fable 5.1, Sep 2026 (Epoch Capabilities Index)
Largest training run
Claude 3.7 Sonnet, 3.4 × 10²⁵ FLOP
Country
United States

Releases, newest first

Data: Epoch AI (Creative Commons Attribution), releases too new for it from OpenRouter, and METR. Updated 25 Sep 2026.