# Claude Opus 4.6 vs Claude Sonnet 4.6

As of Oct 15, 2026, Claude Opus 4.6 leads Claude Sonnet 4.6 in 6 of 6 shared categories: General LLM, Reasoning, Science, Coding › Web dev, Long context, and Factuality.

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

Claude Sonnet 4.6: $6 per 1M blended tokens.

Claude Opus 4.6: closed weights.

Claude Sonnet 4.6: closed weights.

- Which to pick, General LLM: As of Oct 15, 2026, Claude Opus 4.6 leads Claude Sonnet 4.6 in General LLM at #4 against #38.
- Which to pick, Reasoning: As of Oct 15, 2026, Claude Opus 4.6 leads Claude Sonnet 4.6 in Reasoning at #2 against #20.
- Which to pick, Science: As of Oct 15, 2026, Claude Opus 4.6 leads Claude Sonnet 4.6 in Science at #32 against #50.
- Which to pick, Coding › Web dev: As of Oct 15, 2026, Claude Opus 4.6 leads Claude Sonnet 4.6 in Coding › Web dev at #37 against #43.
- Which to pick, Long context: As of Oct 15, 2026, Claude Opus 4.6 leads Claude Sonnet 4.6 in Long context at #2 against #21.
- Which to pick, Factuality: As of Oct 15, 2026, Claude Opus 4.6 leads Claude Sonnet 4.6 in Factuality at #3 against #38.

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).

As of Oct 15, 2026, Claude Sonnet 4.6 is a former state-of-the-art holder in Long context (since Mar 19, 2026; sources LMArena Text (style-controlled, longer query); methodology v1.0).