# Claude Opus 5.5 vs Gemini 3.6 Flash

As of Oct 14, 2026, Claude Opus 5.5 leads Gemini 3.6 Flash in 7 of 8 shared categories: General LLM, Reasoning, Coding › Web dev, Long context, Vision, Factuality, and Abstraction (ARC).

Claude Opus 5.5: $8.000000000000002 per 1M blended tokens.

Gemini 3.6 Flash: $1.5 per 1M blended tokens.

Claude Opus 5.5: closed weights.

Gemini 3.6 Flash: closed weights.

- Which to pick, General LLM: As of Oct 14, 2026, Claude Opus 5.5 leads Gemini 3.6 Flash in General LLM at #2 against #19.
- Which to pick, Reasoning: As of Oct 14, 2026, Claude Opus 5.5 leads Gemini 3.6 Flash in Reasoning at #1 against #24.
- Which to pick, Science: As of Oct 14, 2026, Gemini 3.6 Flash leads Claude Opus 5.5 in Science at #9 against #31.
- Which to pick, Coding › Web dev: As of Oct 14, 2026, Claude Opus 5.5 leads Gemini 3.6 Flash in Coding › Web dev at #1 against #39.
- Which to pick, Long context: As of Oct 14, 2026, Claude Opus 5.5 leads Gemini 3.6 Flash in Long context at #1 against #26.
- Which to pick, Vision: As of Oct 14, 2026, Claude Opus 5.5 leads Gemini 3.6 Flash in Vision at #4 against #29.
- Which to pick, Factuality: As of Oct 14, 2026, Claude Opus 5.5 leads Gemini 3.6 Flash in Factuality at #1 against #20.
- Which to pick, Abstraction (ARC): As of Oct 14, 2026, Claude Opus 5.5 leads Gemini 3.6 Flash in Abstraction (ARC) at #1 against #13.

As of Oct 14, 2026, Claude Opus 5.5 is tied for state of the art in Reasoning (since Oct 2, 2026; sources LMArena Text (style-controlled, hard prompts); methodology v1.0).

As of Oct 14, 2026, Gemini 3.6 Flash is ranked #9 in Science (since Oct 14, 2026; sources GPQA Diamond; methodology v1.0).