# Claude Opus 5 vs Gemini 3.1 Pro Preview

As of Oct 14, 2026, Claude Opus 5 leads Gemini 3.1 Pro Preview in 6 of 8 shared categories: General LLM, Reasoning, Coding › Web dev, Long context, Vision, and Factuality.

Claude Opus 5: $10 per 1M blended tokens.

Gemini 3.1 Pro Preview: $4.5 per 1M blended tokens.

Claude Opus 5: closed weights.

Gemini 3.1 Pro Preview: closed weights.

- Which to pick, General LLM: As of Oct 14, 2026, Claude Opus 5 leads Gemini 3.1 Pro Preview in General LLM at #11 against #15.
- Which to pick, Reasoning: As of Oct 14, 2026, Claude Opus 5 leads Gemini 3.1 Pro Preview in Reasoning at #9 against #14.
- Which to pick, Science: As of Oct 14, 2026, Gemini 3.1 Pro Preview leads Claude Opus 5 in Science at #7 against #12.
- Which to pick, Coding › Web dev: As of Oct 14, 2026, Claude Opus 5 leads Gemini 3.1 Pro Preview in Coding › Web dev at #6 against #58.
- Which to pick, Long context: As of Oct 14, 2026, Claude Opus 5 leads Gemini 3.1 Pro Preview in Long context at #9 against #12.
- Which to pick, Vision: As of Oct 14, 2026, Claude Opus 5 leads Gemini 3.1 Pro Preview in Vision at #12 against #25.
- Which to pick, Factuality: As of Oct 14, 2026, Claude Opus 5 leads Gemini 3.1 Pro Preview in Factuality at #4 against #18.
- Which to pick, Abstraction (ARC): As of Oct 14, 2026, Gemini 3.1 Pro Preview leads Claude Opus 5 in Abstraction (ARC) at #2 against #3.

As of Oct 14, 2026, Claude Opus 5 is near state of the art, rank #4 in Factuality (since Oct 14, 2026; sources LMArena Text factuality; methodology v1.0).

As of Oct 14, 2026, Gemini 3.1 Pro Preview is state of the art on best per dollar in Math (since Oct 14, 2026; sources Humanity's Last Exam; methodology v1.0).