# Claude 3 Opus vs O3 Mini

As of Oct 14, 2026, Claude 3 Opus leads O3 Mini in 0 of 2 shared categories.

Claude 3 Opus: price per 1M tokens is unset in the catalog.

O3 Mini: $1.9250000000000003 per 1M blended tokens.

Claude 3 Opus: closed weights.

O3 Mini: closed weights.

- Which to pick, General LLM: As of Oct 14, 2026, O3 Mini leads Claude 3 Opus in General LLM at #7 against #9.
- Which to pick, Science: As of Oct 14, 2026, O3 Mini leads Claude 3 Opus in Science at #76 against #138.

As of Oct 14, 2026, Claude 3 Opus is ranked #9 in General LLM (since Oct 14, 2026; 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).