# Claude Fable 5.1 vs Claude Sonnet 4.6

As of Oct 15, 2026, Claude Fable 5.1 leads Claude Sonnet 4.6 in 7 of 7 shared categories: General LLM, Reasoning, Coding › Web dev, Long context, Vision, Factuality, and Abstraction (ARC).

Claude Fable 5.1: $20 per 1M blended tokens.

Claude Sonnet 4.6: $6 per 1M blended tokens.

Claude Fable 5.1: closed weights.

Claude Sonnet 4.6: closed weights.

- Which to pick, General LLM: As of Oct 15, 2026, Claude Fable 5.1 leads Claude Sonnet 4.6 in General LLM at #6 against #38.
- Which to pick, Reasoning: As of Oct 15, 2026, Claude Fable 5.1 leads Claude Sonnet 4.6 in Reasoning at #5 against #20.
- Which to pick, Coding › Web dev: As of Oct 15, 2026, Claude Fable 5.1 leads Claude Sonnet 4.6 in Coding › Web dev at #5 against #43.
- Which to pick, Long context: As of Oct 15, 2026, Claude Fable 5.1 leads Claude Sonnet 4.6 in Long context at #6 against #21.
- Which to pick, Vision: As of Oct 15, 2026, Claude Fable 5.1 leads Claude Sonnet 4.6 in Vision at #6 against #23.
- Which to pick, Factuality: As of Oct 15, 2026, Claude Fable 5.1 leads Claude Sonnet 4.6 in Factuality at #1 against #38.
- Which to pick, Abstraction (ARC): As of Oct 15, 2026, Claude Fable 5.1 leads Claude Sonnet 4.6 in Abstraction (ARC) at #3 against #23.

As of Oct 15, 2026, Claude Fable 5.1 is tied for state of the art in Factuality (since Oct 2, 2026; sources LMArena Text factuality; methodology v1.0).

As of Oct 15, 2026, Claude Sonnet 4.6 is a former state-of-the-art holder in Long context (since Mar 19, 2026; sources LMArena Text (style-controlled, longer query); methodology v1.0).