# Claude Opus 5 vs GPT-4 1106 Preview

As of Oct 15, 2026, Claude Opus 5 leads GPT-4 1106 Preview in 1 of 2 shared categories: Science.

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

GPT-4 1106 Preview: price per 1M tokens is unset in the catalog.

Claude Opus 5: closed weights.

GPT-4 1106 Preview: closed weights.

- Which to pick, General LLM: As of Oct 15, 2026, GPT-4 1106 Preview leads Claude Opus 5 in General LLM at #8 against #11.
- Which to pick, Science: As of Oct 15, 2026, Claude Opus 5 leads GPT-4 1106 Preview in Science at #12 against #148.

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-4 1106 Preview is ranked #8 in General LLM (since Oct 15, 2026; sources LMArena Text (style-controlled, overall); methodology v1.0).