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
Yes. SOTA in co-SOTA in Reasoning, co-SOTA in Coding, co-SOTA in Coding › Agentic, Coding › Web dev, co-SOTA in Long context and co-SOTA in Factuality.
DeepSeek V3 0324
It used to be. Was SOTA in General LLM.
| Category | Claude Opus 5.5 | DeepSeek V3 0324 |
|---|---|---|
| General LLM | #2 · Near-SOTA · General LLM Margin 1.3605442176870781 LMArena leaderboard dataset · Oct 13, 2026 | #120 · #120 in General LLM Margin 81.63265306122449 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #1 · Co-SOTA · Reasoning Margin 0 LMArena leaderboard dataset · Oct 13, 2026 | #126 · Was SOTA · Reasoning Margin 86.98630136986301 LMArena leaderboard dataset · Oct 13, 2026 |
| Math | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 |
| Science | #31 · #31 in Science Margin — Epoch AI benchmarking hub · Sep 22, 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 | #1 · SOTA · Coding › Web dev Margin 0 LMArena leaderboard dataset · Oct 13, 2026 | — |
| Long context | #1 · Co-SOTA · Long context Margin 0 LMArena leaderboard dataset · Oct 13, 2026 | #128 · Was SOTA · Long context Margin 87.07482993197279 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | #4 · Near-SOTA · Vision Margin 13.15789473684211 Epoch AI benchmarking hub · Sep 22, 2026 | — |
| Factuality | #1 · Co-SOTA · Factuality Margin 0 LMArena leaderboard dataset · Oct 13, 2026 | — |
| Abstraction (ARC) | #1 · #1 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Sep 22, 2026 | — |
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.
General LLM: As of Oct 14, 2026, Claude Opus 5.5 leads DeepSeek V3 0324 in General LLM at #2 against #120.
Reasoning: As of Oct 14, 2026, Claude Opus 5.5 leads DeepSeek V3 0324 in Reasoning at #1 against #126.
Science: As of Oct 14, 2026, Claude Opus 5.5 leads DeepSeek V3 0324 in Science at #31 against #93.
Long context: As of Oct 14, 2026, Claude Opus 5.5 leads DeepSeek V3 0324 in Long context at #1 against #128.
Claude Opus 5.5 · DeepSeek V3 0324
Claude Opus 5.5 or 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 or DeepSeek V3 0324 for General LLM?
As of Oct 14, 2026, Claude Opus 5.5 leads DeepSeek V3 0324 in General LLM at #2 against #120.
Claude Opus 5.5 or DeepSeek V3 0324 for Reasoning?
As of Oct 14, 2026, Claude Opus 5.5 leads DeepSeek V3 0324 in Reasoning at #1 against #126.
Claude Opus 5.5 or DeepSeek V3 0324 for Science?
As of Oct 14, 2026, Claude Opus 5.5 leads DeepSeek V3 0324 in Science at #31 against #93.