# Claude Opus 4.6 vs O1 Preview

As of Oct 14, 2026, Claude Opus 4.6 leads O1 Preview in 4 of 4 shared categories: General LLM, Reasoning, Science, and Long context.

Claude Opus 4.6: $10 per 1M blended tokens.

O1 Preview: price per 1M tokens is unset in the catalog.

Claude Opus 4.6: closed weights.

O1 Preview: closed weights.

- Which to pick, General LLM: As of Oct 14, 2026, Claude Opus 4.6 leads O1 Preview in General LLM at #4 against #129.
- Which to pick, Reasoning: As of Oct 14, 2026, Claude Opus 4.6 leads O1 Preview in Reasoning at #2 against #137.
- Which to pick, Science: As of Oct 14, 2026, Claude Opus 4.6 leads O1 Preview in Science at #32 against #125.
- Which to pick, Long context: As of Oct 14, 2026, Claude Opus 4.6 leads O1 Preview in Long context at #2 against #135.

As of Oct 14, 2026, Claude Opus 4.6 is near state of the art, rank #2 in Reasoning (since Oct 14, 2026; sources LMArena Text (style-controlled, hard prompts); methodology v1.0).

As of Oct 14, 2026, O1 Preview is a former state-of-the-art holder in General LLM (since Sep 27, 2024; sources LMArena Text (style-controlled, overall); methodology v1.0).