# Claude Sonnet 5.5 vs DeepSeek V3.2 Exp

As of Oct 15, 2026, Claude Sonnet 5.5 leads DeepSeek V3.2 Exp in 5 of 5 shared categories: General LLM, Reasoning, Coding › Web dev, Long context, and Factuality.

Claude Sonnet 5.5: $4.000000000000001 per 1M blended tokens.

DeepSeek V3.2 Exp: $0.30500000000000005 per 1M blended tokens.

Claude Sonnet 5.5: closed weights.

DeepSeek V3.2 Exp: open weights.

- Which to pick, General LLM: As of Oct 15, 2026, Claude Sonnet 5.5 leads DeepSeek V3.2 Exp in General LLM at #29 against #118.
- Which to pick, Reasoning: As of Oct 15, 2026, Claude Sonnet 5.5 leads DeepSeek V3.2 Exp in Reasoning at #18 against #106.
- Which to pick, Coding › Web dev: As of Oct 15, 2026, Claude Sonnet 5.5 leads DeepSeek V3.2 Exp in Coding › Web dev at #3 against #109.
- Which to pick, Long context: As of Oct 15, 2026, Claude Sonnet 5.5 leads DeepSeek V3.2 Exp in Long context at #11 against #101.
- Which to pick, Factuality: As of Oct 15, 2026, Claude Sonnet 5.5 leads DeepSeek V3.2 Exp in Factuality at #17 against #91.

As of Oct 15, 2026, Claude Sonnet 5.5 is tied for state of the art in Coding (since Oct 6, 2026; sources Terminal-Bench 4.0; methodology v1.0).

As of Oct 15, 2026, DeepSeek V3.2 Exp is a former state-of-the-art holder in Reasoning (since Nov 17, 2025; sources LMArena Text (style-controlled, hard prompts); methodology v1.0).