# Claude Opus 5 vs Gemini 4 Argon

As of Oct 15, 2026, Claude Opus 5 leads Gemini 4 Argon in 1 of 7 shared categories: Coding › Web dev.

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

Gemini 4 Argon: $4.000000000000001 per 1M blended tokens.

Claude Opus 5: closed weights.

Gemini 4 Argon: closed weights.

- Which to pick, General LLM: As of Oct 15, 2026, Gemini 4 Argon leads Claude Opus 5 in General LLM at #1 against #11.
- Which to pick, Reasoning: As of Oct 15, 2026, Gemini 4 Argon leads Claude Opus 5 in Reasoning at #1 against #9.
- Which to pick, Science: As of Oct 15, 2026, Gemini 4 Argon leads Claude Opus 5 in Science at #1 against #12.
- Which to pick, Coding › Web dev: As of Oct 15, 2026, Claude Opus 5 leads Gemini 4 Argon in Coding › Web dev at #6 against #8.
- Which to pick, Long context: As of Oct 15, 2026, Gemini 4 Argon leads Claude Opus 5 in Long context at #1 against #9.
- Which to pick, Vision: As of Oct 15, 2026, Gemini 4 Argon leads Claude Opus 5 in Vision at #7 against #12.
- Which to pick, Factuality: As of Oct 15, 2026, Gemini 4 Argon leads Claude Opus 5 in Factuality at #1 against #4.

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 4 Argon is state of the art in General LLM (since Oct 2, 2026; sources LMArena Text (style-controlled, overall); methodology v1.0).