# Claude Sonnet 4.5 vs GPT-5.4

As of Oct 15, 2026, Claude Sonnet 4.5 leads GPT-5.4 in 1 of 8 shared categories: Long context.

Claude Sonnet 4.5: $6 per 1M blended tokens.

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

Claude Sonnet 4.5: closed weights.

GPT-5.4: closed weights.

- Which to pick, General LLM: As of Oct 15, 2026, GPT-5.4 leads Claude Sonnet 4.5 in General LLM at #28 against #49.
- Which to pick, Reasoning: As of Oct 15, 2026, GPT-5.4 leads Claude Sonnet 4.5 in Reasoning at #29 against #40.
- Which to pick, Math: As of Oct 15, 2026, GPT-5.4 leads Claude Sonnet 4.5 in Math at #9 against #25.
- Which to pick, Science: As of Oct 15, 2026, GPT-5.4 leads Claude Sonnet 4.5 in Science at #16 against #82.
- Which to pick, Coding › Web dev: As of Oct 15, 2026, GPT-5.4 leads Claude Sonnet 4.5 in Coding › Web dev at #55 against #78.
- Which to pick, Long context: As of Oct 15, 2026, Claude Sonnet 4.5 leads GPT-5.4 in Long context at #29 against #34.
- Which to pick, Factuality: As of Oct 15, 2026, GPT-5.4 leads Claude Sonnet 4.5 in Factuality at #6 against #50.
- Which to pick, Abstraction (ARC): As of Oct 15, 2026, GPT-5.4 leads Claude Sonnet 4.5 in Abstraction (ARC) at #10 against #66.

As of Oct 15, 2026, Claude Sonnet 4.5 is a former state-of-the-art holder in General LLM (since Oct 3, 2025; sources LMArena Text (style-controlled, overall); methodology v1.0).

As of Oct 15, 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).