# Claude Opus 4.1 vs O3 Mini

As of Oct 14, 2026, Claude Opus 4.1 leads O3 Mini in 2 of 4 shared categories: Reasoning and Long context.

Claude Opus 4.1: $29.999999999999996 per 1M blended tokens.

O3 Mini: $1.9250000000000003 per 1M blended tokens.

Claude Opus 4.1: closed weights.

O3 Mini: closed weights.

- Which to pick, General LLM: As of Oct 14, 2026, O3 Mini leads Claude Opus 4.1 in General LLM at #7 against #57.
- Which to pick, Reasoning: As of Oct 14, 2026, Claude Opus 4.1 leads O3 Mini in Reasoning at #47 against #133.
- Which to pick, Science: As of Oct 14, 2026, O3 Mini leads Claude Opus 4.1 in Science at #76 against #83.
- Which to pick, Long context: As of Oct 14, 2026, Claude Opus 4.1 leads O3 Mini in Long context at #44 against #145.

As of Oct 14, 2026, Claude Opus 4.1 is a former state-of-the-art holder in General LLM (since Aug 18, 2025; sources LMArena Text (style-controlled, overall); methodology v1.0).

As of Oct 14, 2026, O3 Mini is a former state-of-the-art holder in Reasoning (since Feb 9, 2025; sources LMArena Text (style-controlled, hard prompts); methodology v1.0).