# Claude Opus 4 vs Gemini 3.1 Pro Preview

As of Oct 15, 2026, Claude Opus 4 leads Gemini 3.1 Pro Preview in 0 of 6 shared categories.

Claude Opus 4: price per 1M tokens is unset in the catalog.

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

Claude Opus 4: closed weights.

Gemini 3.1 Pro Preview: closed weights.

- Which to pick, General LLM: As of Oct 15, 2026, Gemini 3.1 Pro Preview leads Claude Opus 4 in General LLM at #15 against #131.
- Which to pick, Reasoning: As of Oct 15, 2026, Gemini 3.1 Pro Preview leads Claude Opus 4 in Reasoning at #14 against #125.
- Which to pick, Math: As of Oct 15, 2026, Gemini 3.1 Pro Preview leads Claude Opus 4 in Math at #3 against #29.
- Which to pick, Science: As of Oct 15, 2026, Gemini 3.1 Pro Preview leads Claude Opus 4 in Science at #7 against #91.
- Which to pick, Long context: As of Oct 15, 2026, Gemini 3.1 Pro Preview leads Claude Opus 4 in Long context at #12 against #86.
- Which to pick, Abstraction (ARC): As of Oct 15, 2026, Gemini 3.1 Pro Preview leads Claude Opus 4 in Abstraction (ARC) at #2 against #69.

As of Oct 15, 2026, Claude Opus 4 is a former state-of-the-art holder in Reasoning (since Jun 3, 2025; sources LMArena Text (style-controlled, hard prompts); methodology v1.0).

As of Oct 15, 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).