# Claude Opus 5 vs Gemini 3.8 Flash

As of Oct 15, 2026, Claude Opus 5 leads Gemini 3.8 Flash in 5 of 10 shared categories: Coding, Coding › Agentic, Coding › Web dev, Vision, and Factuality.

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

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

Claude Opus 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 Opus 5 in General LLM at #7 against #11.
- Which to pick, Reasoning: As of Oct 15, 2026, Gemini 3.8 Flash leads Claude Opus 5 in Reasoning at #6 against #9.
- Which to pick, Science: As of Oct 15, 2026, Gemini 3.8 Flash leads Claude Opus 5 in Science at #4 against #12.
- Which to pick, Coding: As of Oct 15, 2026, Claude Opus 5 leads Gemini 3.8 Flash in Coding at #4 against #15.
- Which to pick, Coding › Agentic: As of Oct 15, 2026, Claude Opus 5 leads Gemini 3.8 Flash in Coding › Agentic at #4 against #15.
- Which to pick, Coding › Web dev: As of Oct 15, 2026, Claude Opus 5 leads Gemini 3.8 Flash in Coding › Web dev at #6 against #29.
- Which to pick, Long context: As of Oct 15, 2026, Gemini 3.8 Flash leads Claude Opus 5 in Long context at #5 against #9.
- Which to pick, Vision: As of Oct 15, 2026, Claude Opus 5 leads Gemini 3.8 Flash in Vision at #12 against #15.
- Which to pick, Factuality: As of Oct 15, 2026, Claude Opus 5 leads Gemini 3.8 Flash in Factuality at #4 against #19.
- Which to pick, Abstraction (ARC): As of Oct 15, 2026, Gemini 3.8 Flash leads Claude Opus 5 in Abstraction (ARC) at #1 against #3.

As of Oct 15, 2026, Claude Opus 5 is near state of the art, rank #4 in Factuality (since Oct 15, 2026; sources LMArena Text factuality; 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).