Claude Sonnet 5.5 vs DeepSeek V3 0324
As of Oct 14, 2026, Claude Sonnet 5.5 leads DeepSeek V3 0324 in 4 of 4 shared categories: General LLM, Reasoning, Science, and Long context.
Claude Sonnet 5.5
Yes. SOTA in co-SOTA in Coding, co-SOTA in Coding › Agentic and co-SOTA in Vision.
DeepSeek V3 0324
It used to be. Was SOTA in General LLM.
| Category | Claude Sonnet 5.5 | DeepSeek V3 0324 |
|---|---|---|
| General LLM | #27 · #27 in General LLM Margin 18.367346938775512 LMArena leaderboard dataset · Oct 13, 2026 | #120 · #120 in General LLM Margin 81.63265306122449 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #18 · #18 in Reasoning Margin 13.013698630136986 LMArena leaderboard dataset · Oct 13, 2026 | #126 · Was SOTA · Reasoning Margin 86.98630136986301 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 | #93 · #93 in Science Margin — Epoch AI benchmarking hub · Mar 24, 2025 |
| 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 | — |
| Long context | #11 · #11 in Long context Margin 7.482993197278915 LMArena leaderboard dataset · Oct 13, 2026 | #128 · Was SOTA · Long context Margin 87.07482993197279 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 | — |
Claude Sonnet 5.5: $4.000000000000001 per 1M blended tokens.
DeepSeek V3 0324: price per 1M tokens is unset in the catalog.
Claude Sonnet 5.5: closed weights.
DeepSeek V3 0324: open weights.
General LLM: As of Oct 14, 2026, Claude Sonnet 5.5 leads DeepSeek V3 0324 in General LLM at #27 against #120.
Reasoning: As of Oct 14, 2026, Claude Sonnet 5.5 leads DeepSeek V3 0324 in Reasoning at #18 against #126.
Science: As of Oct 14, 2026, Claude Sonnet 5.5 leads DeepSeek V3 0324 in Science at #3 against #93.
Long context: As of Oct 14, 2026, Claude Sonnet 5.5 leads DeepSeek V3 0324 in Long context at #11 against #128.
Claude Sonnet 5.5 · DeepSeek V3 0324
Claude Sonnet 5.5 or DeepSeek V3 0324?
As of Oct 14, 2026, Claude Sonnet 5.5 leads DeepSeek V3 0324 in 4 of 4 shared categories: General LLM, Reasoning, Science, and Long context.
Claude Sonnet 5.5 or DeepSeek V3 0324 for General LLM?
As of Oct 14, 2026, Claude Sonnet 5.5 leads DeepSeek V3 0324 in General LLM at #27 against #120.
Claude Sonnet 5.5 or DeepSeek V3 0324 for Reasoning?
As of Oct 14, 2026, Claude Sonnet 5.5 leads DeepSeek V3 0324 in Reasoning at #18 against #126.
Claude Sonnet 5.5 or DeepSeek V3 0324 for Science?
As of Oct 14, 2026, Claude Sonnet 5.5 leads DeepSeek V3 0324 in Science at #3 against #93.