# Claude Sonnet 5.5 vs GPT-5

As of Oct 15, 2026, Claude Sonnet 5.5 leads GPT-5 in 7 of 7 shared categories: General LLM, Reasoning, Math, Science, Coding › Web dev, Long context, and Factuality.

Claude Sonnet 5.5: $4.000000000000001 per 1M blended tokens.

GPT-5: $3.4375000000000004 per 1M blended tokens.

Claude Sonnet 5.5: closed weights.

GPT-5: closed weights.

- Which to pick, General LLM: As of Oct 15, 2026, Claude Sonnet 5.5 leads GPT-5 in General LLM at #29 against #95.
- Which to pick, Reasoning: As of Oct 15, 2026, Claude Sonnet 5.5 leads GPT-5 in Reasoning at #18 against #103.
- Which to pick, Math: As of Oct 15, 2026, Claude Sonnet 5.5 leads GPT-5 in Math at #4 against #15.
- Which to pick, Science: As of Oct 15, 2026, Claude Sonnet 5.5 leads GPT-5 in Science at #3 against #54.
- Which to pick, Coding › Web dev: As of Oct 15, 2026, Claude Sonnet 5.5 leads GPT-5 in Coding › Web dev at #3 against #72.
- Which to pick, Long context: As of Oct 15, 2026, Claude Sonnet 5.5 leads GPT-5 in Long context at #11 against #142.
- Which to pick, Factuality: As of Oct 15, 2026, Claude Sonnet 5.5 leads GPT-5 in Factuality at #17 against #119.

As of Oct 15, 2026, Claude Sonnet 5.5 is tied for state of the art in Coding (since Oct 6, 2026; sources Terminal-Bench 4.0; methodology v1.0).

As of Oct 15, 2026, GPT-5 is a former state-of-the-art holder in General LLM (since Aug 27, 2025; sources LMArena Text (style-controlled, overall); methodology v1.0).