# Claude Fable 5.1 vs GPT-5.4

As of Oct 14, 2026, Claude Fable 5.1 leads GPT-5.4 in 7 of 7 shared categories: General LLM, Reasoning, Math, Coding › Web dev, Long context, Factuality, and Abstraction (ARC).

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

GPT-5.4: $5.625 per 1M blended tokens.

Claude Fable 5.1: closed weights.

GPT-5.4: closed weights.

- Which to pick, General LLM: As of Oct 14, 2026, Claude Fable 5.1 leads GPT-5.4 in General LLM at #6 against #28.
- Which to pick, Reasoning: As of Oct 14, 2026, Claude Fable 5.1 leads GPT-5.4 in Reasoning at #5 against #29.
- Which to pick, Math: As of Oct 14, 2026, Claude Fable 5.1 leads GPT-5.4 in Math at #2 against #9.
- Which to pick, Coding › Web dev: As of Oct 14, 2026, Claude Fable 5.1 leads GPT-5.4 in Coding › Web dev at #5 against #55.
- Which to pick, Long context: As of Oct 14, 2026, Claude Fable 5.1 leads GPT-5.4 in Long context at #6 against #34.
- Which to pick, Factuality: As of Oct 14, 2026, Claude Fable 5.1 leads GPT-5.4 in Factuality at #1 against #6.
- Which to pick, Abstraction (ARC): As of Oct 14, 2026, Claude Fable 5.1 leads GPT-5.4 in Abstraction (ARC) at #3 against #10.

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, GPT-5.4 is a former state-of-the-art holder in General LLM (since Apr 10, 2026; sources LMArena Text (style-controlled, overall); methodology v1.0).