# Claude Sonnet 5.5 vs DeepSeek V3.2 Thinking

As of Oct 15, 2026, Claude Sonnet 5.5 leads DeepSeek V3.2 Thinking 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 Thinking: price per 1M tokens is unset in the catalog.

Claude Sonnet 5.5: closed weights.

DeepSeek V3.2 Thinking: open weights.

- Which to pick, General LLM: As of Oct 15, 2026, Claude Sonnet 5.5 leads DeepSeek V3.2 Thinking in General LLM at #29 against #116.
- Which to pick, Reasoning: As of Oct 15, 2026, Claude Sonnet 5.5 leads DeepSeek V3.2 Thinking in Reasoning at #18 against #110.
- Which to pick, Coding › Web dev: As of Oct 15, 2026, Claude Sonnet 5.5 leads DeepSeek V3.2 Thinking in Coding › Web dev at #3 against #91.
- Which to pick, Long context: As of Oct 15, 2026, Claude Sonnet 5.5 leads DeepSeek V3.2 Thinking in Long context at #11 against #98.
- Which to pick, Factuality: As of Oct 15, 2026, Claude Sonnet 5.5 leads DeepSeek V3.2 Thinking in Factuality at #17 against #101.

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 Thinking is ranked #91 in Coding › Web dev (since Oct 15, 2026; sources LMArena WebDev; methodology v1.0).