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
Yes. SOTA in co-SOTA in Coding, co-SOTA in Coding › Agentic and co-SOTA in Vision.
DeepSeek V3.2 Thinking
#79 Best current rank: #79 in Long context, as of Oct 15, 2026.
| Category | Claude Sonnet 5.5 | DeepSeek V3.2 Thinking |
|---|---|---|
| General LLM | #27 · #27 in General LLM Margin 18.367346938775512 LMArena leaderboard dataset · Oct 13, 2026 | #89 · #89 in General LLM Margin 60.54421768707483 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #18 · #18 in Reasoning Margin 13.013698630136986 LMArena leaderboard dataset · Oct 13, 2026 | #85 · #85 in Reasoning Margin 58.9041095890411 LMArena leaderboard dataset · Oct 13, 2026 |
| Math | #4 · #4 in Math Margin 6.666666666666671 Epoch AI benchmarking hub · Sep 28, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 |
| Science | #3 · #3 in Science Margin — Epoch AI benchmarking hub · Sep 28, 2026 | — |
| Coding | #1 · Co-SOTA · Coding Margin 0 Terminal-Bench Harbor Hub · Oct 6, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 |
| Coding › Agentic | #1 · Co-SOTA · Coding › Agentic Margin 0 Terminal-Bench Harbor Hub · Oct 6, 2026 | — |
| Coding › Web dev | #3 · Near-SOTA · Coding › Web dev Margin 1.8691588785046775 LMArena leaderboard dataset · Oct 13, 2026 | #81 · #81 in Coding › Web dev Margin 74.76635514018692 LMArena leaderboard dataset · Oct 13, 2026 |
| Long context | #11 · #11 in Long context Margin 7.482993197278915 LMArena leaderboard dataset · Oct 13, 2026 | #79 · #79 in Long context Margin 53.74149659863946 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | #1 · Co-SOTA · Vision Margin 0 Epoch AI benchmarking hub · Sep 28, 2026 | — |
| Factuality | #16 · #16 in Factuality Margin 12.68656716417911 LMArena leaderboard dataset · Oct 13, 2026 | #79 · #79 in Factuality Margin 59.70149253731344 LMArena leaderboard dataset · Oct 13, 2026 |
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.
General LLM: As of Oct 15, 2026, Claude Sonnet 5.5 leads DeepSeek V3.2 Thinking in General LLM at #27 against #89.
Reasoning: As of Oct 15, 2026, Claude Sonnet 5.5 leads DeepSeek V3.2 Thinking in Reasoning at #18 against #85.
Coding › Web dev: As of Oct 15, 2026, Claude Sonnet 5.5 leads DeepSeek V3.2 Thinking in Coding › Web dev at #3 against #81.
Long context: As of Oct 15, 2026, Claude Sonnet 5.5 leads DeepSeek V3.2 Thinking in Long context at #11 against #79.
Factuality: As of Oct 15, 2026, Claude Sonnet 5.5 leads DeepSeek V3.2 Thinking in Factuality at #16 against #79.
Claude Sonnet 5.5 · DeepSeek V3.2 Thinking
Claude Sonnet 5.5 or 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 or DeepSeek V3.2 Thinking for General LLM?
As of Oct 15, 2026, Claude Sonnet 5.5 leads DeepSeek V3.2 Thinking in General LLM at #27 against #89.
Claude Sonnet 5.5 or DeepSeek V3.2 Thinking for Reasoning?
As of Oct 15, 2026, Claude Sonnet 5.5 leads DeepSeek V3.2 Thinking in Reasoning at #18 against #85.
Claude Sonnet 5.5 or DeepSeek V3.2 Thinking for Coding › Web dev?
As of Oct 15, 2026, Claude Sonnet 5.5 leads DeepSeek V3.2 Thinking in Coding › Web dev at #3 against #81.