deployedbyai

The Deploy Log | Models and APIs

Claude Fable 5.1

Unchanged at $10 per million input and $50 per million output, with cache reads down to $0.25 per million, and Mythos 5.1 alongside it.

Anthropic | In Edition 51, Saturday 12 Sep 2026

SOURCE Anthropic, Introducing Claude Fable 5.1 and Mythos 5.1

Added to The Deploy Log Monday 14 Sep 2026, updated Thursday 17 Sep 2026. Read Edition 51, the edition that carried it.

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