# Claude Opus 5.5 vs DeepSeek V3 0324

As of Oct 14, 2026, Claude Opus 5.5 leads DeepSeek V3 0324 in 4 of 4 shared categories: General LLM, Reasoning, Science, and Long context.

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

DeepSeek V3 0324: price per 1M tokens is unset in the catalog.

Claude Opus 5.5: closed weights.

DeepSeek V3 0324: open weights.

- Which to pick, General LLM: As of Oct 14, 2026, Claude Opus 5.5 leads DeepSeek V3 0324 in General LLM at #2 against #120.
- Which to pick, Reasoning: As of Oct 14, 2026, Claude Opus 5.5 leads DeepSeek V3 0324 in Reasoning at #1 against #126.
- Which to pick, Science: As of Oct 14, 2026, Claude Opus 5.5 leads DeepSeek V3 0324 in Science at #31 against #93.
- Which to pick, Long context: As of Oct 14, 2026, Claude Opus 5.5 leads DeepSeek V3 0324 in Long context at #1 against #128.

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).

As of Oct 14, 2026, DeepSeek V3 0324 is a former state-of-the-art holder in General LLM (since Apr 5, 2025; sources LMArena Text (style-controlled, overall); methodology v1.0).