# Claude Opus 4 vs Claude Opus 4.6

As of Oct 15, 2026, Claude Opus 4 leads Claude Opus 4.6 in 0 of 5 shared categories.

Claude Opus 4: price per 1M tokens is unset in the catalog.

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

Claude Opus 4: closed weights.

Claude Opus 4.6: closed weights.

- Which to pick, General LLM: As of Oct 15, 2026, Claude Opus 4.6 leads Claude Opus 4 in General LLM at #4 against #131.
- Which to pick, Reasoning: As of Oct 15, 2026, Claude Opus 4.6 leads Claude Opus 4 in Reasoning at #2 against #125.
- Which to pick, Math: As of Oct 15, 2026, Claude Opus 4.6 leads Claude Opus 4 in Math at #11 against #29.
- Which to pick, Science: As of Oct 15, 2026, Claude Opus 4.6 leads Claude Opus 4 in Science at #32 against #91.
- Which to pick, Long context: As of Oct 15, 2026, Claude Opus 4.6 leads Claude Opus 4 in Long context at #2 against #86.

As of Oct 15, 2026, Claude Opus 4 is a former state-of-the-art holder in Reasoning (since Jun 3, 2025; sources LMArena Text (style-controlled, hard prompts); methodology v1.0).

As of Oct 15, 2026, Claude Opus 4.6 is near state of the art, rank #2 in Reasoning (since Oct 15, 2026; sources LMArena Text (style-controlled, hard prompts); methodology v1.0).