# Claude Fable 5 vs Claude Sonnet 4.5 20250929

As of Oct 14, 2026, Claude Fable 5 leads Claude Sonnet 4.5 20250929 in 2 of 2 shared categories: Science and Abstraction (ARC).

Claude Fable 5: $20 per 1M blended tokens.

Claude Sonnet 4.5 20250929: price per 1M tokens is unset in the catalog.

Claude Fable 5: closed weights.

Claude Sonnet 4.5 20250929: closed weights.

- Which to pick, Science: As of Oct 14, 2026, Claude Fable 5 leads Claude Sonnet 4.5 20250929 in Science at #56 against #66.
- Which to pick, Abstraction (ARC): As of Oct 14, 2026, Claude Fable 5 leads Claude Sonnet 4.5 20250929 in Abstraction (ARC) at #1 against #36.

As of Oct 14, 2026, Claude Fable 5 is near state of the art, rank #3 in General LLM (since Oct 14, 2026; sources LMArena Text (style-controlled, overall); methodology v1.0).

As of Oct 14, 2026, Claude Sonnet 4.5 20250929 is ranked #36 in Abstraction (ARC) (since Oct 14, 2026; sources ARC-AGI; methodology v1.0).