# Claude Sonnet 5.5 vs Gemini 2.5 Pro

As of Oct 15, 2026, Claude Sonnet 5.5 leads Gemini 2.5 Pro in 6 of 6 shared categories: General LLM, Reasoning, Science, Coding › Web dev, Long context, and Factuality.

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

Gemini 2.5 Pro: $3.4375000000000004 per 1M blended tokens.

Claude Sonnet 5.5: closed weights.

Gemini 2.5 Pro: closed weights.

- Which to pick, General LLM: As of Oct 15, 2026, Claude Sonnet 5.5 leads Gemini 2.5 Pro in General LLM at #29 against #78.
- Which to pick, Reasoning: As of Oct 15, 2026, Claude Sonnet 5.5 leads Gemini 2.5 Pro in Reasoning at #18 against #92.
- Which to pick, Science: As of Oct 15, 2026, Claude Sonnet 5.5 leads Gemini 2.5 Pro in Science at #3 against #58.
- Which to pick, Coding › Web dev: As of Oct 15, 2026, Claude Sonnet 5.5 leads Gemini 2.5 Pro in Coding › Web dev at #3 against #119.
- Which to pick, Long context: As of Oct 15, 2026, Claude Sonnet 5.5 leads Gemini 2.5 Pro in Long context at #11 against #72.
- Which to pick, Factuality: As of Oct 15, 2026, Claude Sonnet 5.5 leads Gemini 2.5 Pro in Factuality at #17 against #37.

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, Gemini 2.5 Pro is a former state-of-the-art holder in General LLM (since Oct 17, 2025; sources LMArena Text (style-controlled, overall); methodology v1.0).