# Claude Opus 5.5 vs Gemini 4 Argon

As of Oct 15, 2026, Claude Opus 5.5 leads Gemini 4 Argon in 2 of 7 shared categories: Coding › Web dev and Vision.

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

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

Claude Opus 5.5: closed weights.

Gemini 4 Argon: closed weights.

- Which to pick, General LLM: As of Oct 15, 2026, Gemini 4 Argon leads Claude Opus 5.5 in General LLM at #1 against #2.
- Which to pick, Reasoning: As of Oct 15, 2026, Claude Opus 5.5 and Gemini 4 Argon share #1 in Reasoning.
- Which to pick, Science: As of Oct 15, 2026, Gemini 4 Argon leads Claude Opus 5.5 in Science at #1 against #31.
- Which to pick, Coding › Web dev: As of Oct 15, 2026, Claude Opus 5.5 leads Gemini 4 Argon in Coding › Web dev at #1 against #8.
- Which to pick, Long context: As of Oct 15, 2026, Claude Opus 5.5 and Gemini 4 Argon share #1 in Long context.
- Which to pick, Vision: As of Oct 15, 2026, Claude Opus 5.5 leads Gemini 4 Argon in Vision at #4 against #7.
- Which to pick, Factuality: As of Oct 15, 2026, Claude Opus 5.5 and Gemini 4 Argon share #1 in Factuality.

As of Oct 15, 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 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).