# Claude Opus 5 vs GPT-4O Mini

As of Oct 15, 2026, Claude Opus 5 leads GPT-4O Mini in 1 of 2 shared categories: Science.

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

GPT-4O Mini: $0.26249999999999996 per 1M blended tokens.

Claude Opus 5: closed weights.

GPT-4O Mini: closed weights.

- Which to pick, General LLM: As of Oct 15, 2026, Claude Opus 5 and GPT-4O Mini share #11 in General LLM.
- Which to pick, Science: As of Oct 15, 2026, Claude Opus 5 leads GPT-4O Mini in Science at #12 against #161.

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, GPT-4O Mini is ranked #11 in General LLM (since Oct 15, 2026; sources LMArena Text (style-controlled, overall); methodology v1.0).