# Claude Sonnet 4 vs GPT-5.5

As of Oct 14, 2026, Claude Sonnet 4 leads GPT-5.5 in 0 of 5 shared categories.

Claude Sonnet 4: $6 per 1M blended tokens.

GPT-5.5: $11.25 per 1M blended tokens.

Claude Sonnet 4: closed weights.

GPT-5.5: closed weights.

- Which to pick, General LLM: As of Oct 14, 2026, GPT-5.5 leads Claude Sonnet 4 in General LLM at #21 against #126.
- Which to pick, Reasoning: As of Oct 14, 2026, GPT-5.5 leads Claude Sonnet 4 in Reasoning at #25 against #115.
- Which to pick, Science: As of Oct 14, 2026, GPT-5.5 leads Claude Sonnet 4 in Science at #30 against #97.
- Which to pick, Long context: As of Oct 14, 2026, GPT-5.5 leads Claude Sonnet 4 in Long context at #23 against #94.
- Which to pick, Abstraction (ARC): As of Oct 14, 2026, GPT-5.5 leads Claude Sonnet 4 in Abstraction (ARC) at #7 against #67.

As of Oct 14, 2026, Claude Sonnet 4 is ranked #35 in Math (since Oct 14, 2026; sources Humanity's Last Exam; methodology v1.0).

As of Oct 14, 2026, GPT-5.5 is a former state-of-the-art holder in General LLM (since Apr 28, 2026; sources LMArena Text (style-controlled, overall); methodology v1.0).