# Claude 3 Opus vs Claude Opus 5.5

As of Oct 14, 2026, Claude 3 Opus leads Claude Opus 5.5 in 0 of 2 shared categories.

Claude 3 Opus: price per 1M tokens is unset in the catalog.

Claude Opus 5.5: $8.000000000000002 per 1M blended tokens.

Claude 3 Opus: closed weights.

Claude Opus 5.5: closed weights.

- Which to pick, General LLM: As of Oct 14, 2026, Claude Opus 5.5 leads Claude 3 Opus in General LLM at #2 against #9.
- Which to pick, Science: As of Oct 14, 2026, Claude Opus 5.5 leads Claude 3 Opus in Science at #31 against #138.

As of Oct 14, 2026, Claude 3 Opus is ranked #9 in General LLM (since Oct 14, 2026; sources LMArena Text (style-controlled, overall); methodology v1.0).

As of Oct 14, 2026, Claude Opus 5.5 is tied for state of the art in Reasoning (since Oct 2, 2026; sources LMArena Text (style-controlled, hard prompts); methodology v1.0).