# Claude Fable 5.1 vs Claude Haiku 5.5

As of Oct 14, 2026, Claude Fable 5.1 leads Claude Haiku 5.5 in 2 of 2 shared categories: Math and Coding › Web dev.

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

Claude Haiku 5.5: $0.19999999999999998 per 1M blended tokens.

Claude Fable 5.1: closed weights.

Claude Haiku 5.5: closed weights.

- Which to pick, Math: As of Oct 14, 2026, Claude Fable 5.1 leads Claude Haiku 5.5 in Math at #2 against #13.
- Which to pick, Coding › Web dev: As of Oct 14, 2026, Claude Fable 5.1 leads Claude Haiku 5.5 in Coding › Web dev at #5 against #26.

As of Oct 14, 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 14, 2026, Claude Haiku 5.5 is state of the art on best per dollar in Math (since Oct 14, 2026; sources Humanity's Last Exam; methodology v1.0).