# Claude Sonnet 5.5 vs GPT-5 Mini

As of Oct 14, 2026, Claude Sonnet 5.5 leads GPT-5 Mini in 6 of 6 shared categories: General LLM, Reasoning, Math, Science, Long context, and Factuality.

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

GPT-5 Mini: $0.6875 per 1M blended tokens.

Claude Sonnet 5.5: closed weights.

GPT-5 Mini: closed weights.

- Which to pick, General LLM: As of Oct 14, 2026, Claude Sonnet 5.5 leads GPT-5 Mini in General LLM at #27 against #128.
- Which to pick, Reasoning: As of Oct 14, 2026, Claude Sonnet 5.5 leads GPT-5 Mini in Reasoning at #18 against #130.
- Which to pick, Math: As of Oct 14, 2026, Claude Sonnet 5.5 leads GPT-5 Mini in Math at #4 against #21.
- Which to pick, Science: As of Oct 14, 2026, Claude Sonnet 5.5 leads GPT-5 Mini in Science at #3 against #81.
- Which to pick, Long context: As of Oct 14, 2026, Claude Sonnet 5.5 leads GPT-5 Mini in Long context at #11 against #146.
- Which to pick, Factuality: As of Oct 14, 2026, Claude Sonnet 5.5 leads GPT-5 Mini in Factuality at #16 against #110.

As of Oct 14, 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 14, 2026, GPT-5 Mini is a former state-of-the-art holder in Math (since Sep 29, 2025; sources Humanity's Last Exam; methodology v1.0).