# Claude Sonnet 5.5 vs Gemini 3.8 Flash

As of Oct 15, 2026, Claude Sonnet 5.5 leads Gemini 3.8 Flash in 7 of 10 shared categories: Math, Science, Coding, Coding › Agentic, Coding › Web dev, Vision, and Factuality.

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

Gemini 3.8 Flash: $1.5 per 1M blended tokens.

Claude Sonnet 5.5: closed weights.

Gemini 3.8 Flash: closed weights.

- Which to pick, General LLM: As of Oct 15, 2026, Gemini 3.8 Flash leads Claude Sonnet 5.5 in General LLM at #7 against #29.
- Which to pick, Reasoning: As of Oct 15, 2026, Gemini 3.8 Flash leads Claude Sonnet 5.5 in Reasoning at #6 against #18.
- Which to pick, Math: As of Oct 15, 2026, Claude Sonnet 5.5 leads Gemini 3.8 Flash in Math at #4 against #5.
- Which to pick, Science: As of Oct 15, 2026, Claude Sonnet 5.5 leads Gemini 3.8 Flash in Science at #3 against #4.
- Which to pick, Coding: As of Oct 15, 2026, Claude Sonnet 5.5 leads Gemini 3.8 Flash in Coding at #1 against #15.
- Which to pick, Coding › Agentic: As of Oct 15, 2026, Claude Sonnet 5.5 leads Gemini 3.8 Flash in Coding › Agentic at #1 against #15.
- Which to pick, Coding › Web dev: As of Oct 15, 2026, Claude Sonnet 5.5 leads Gemini 3.8 Flash in Coding › Web dev at #3 against #29.
- Which to pick, Long context: As of Oct 15, 2026, Gemini 3.8 Flash leads Claude Sonnet 5.5 in Long context at #5 against #11.
- Which to pick, Vision: As of Oct 15, 2026, Claude Sonnet 5.5 leads Gemini 3.8 Flash in Vision at #1 against #15.
- Which to pick, Factuality: As of Oct 15, 2026, Claude Sonnet 5.5 leads Gemini 3.8 Flash in Factuality at #17 against #19.

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 3.8 Flash is state of the art on best per dollar in General LLM (since Oct 14, 2026; sources LMArena Text (style-controlled, overall); methodology v1.0).