# Claude Fable 5.1 vs Claude Opus 4.7

As of Oct 15, 2026, Claude Fable 5.1 leads Claude Opus 4.7 in 5 of 8 shared categories: Math, Coding › Web dev, Vision, Factuality, and Abstraction (ARC).

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

Claude Opus 4.7: $10 per 1M blended tokens.

Claude Fable 5.1: closed weights.

Claude Opus 4.7: closed weights.

- Which to pick, General LLM: As of Oct 15, 2026, Claude Opus 4.7 leads Claude Fable 5.1 in General LLM at #5 against #6.
- Which to pick, Reasoning: As of Oct 15, 2026, Claude Opus 4.7 leads Claude Fable 5.1 in Reasoning at #4 against #5.
- Which to pick, Math: As of Oct 15, 2026, Claude Fable 5.1 leads Claude Opus 4.7 in Math at #2 against #10.
- Which to pick, Coding › Web dev: As of Oct 15, 2026, Claude Fable 5.1 leads Claude Opus 4.7 in Coding › Web dev at #5 against #34.
- Which to pick, Long context: As of Oct 15, 2026, Claude Opus 4.7 leads Claude Fable 5.1 in Long context at #4 against #6.
- Which to pick, Vision: As of Oct 15, 2026, Claude Fable 5.1 leads Claude Opus 4.7 in Vision at #6 against #20.
- Which to pick, Factuality: As of Oct 15, 2026, Claude Fable 5.1 leads Claude Opus 4.7 in Factuality at #1 against #13.
- Which to pick, Abstraction (ARC): As of Oct 15, 2026, Claude Fable 5.1 leads Claude Opus 4.7 in Abstraction (ARC) at #3 against #11.

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 Opus 4.7 is near state of the art, rank #4 in Reasoning (since Oct 15, 2026; sources LMArena Text (style-controlled, hard prompts); methodology v1.0).