Claude Opus 4.6 vs DeepSeek V3.1
As of Oct 14, 2026, Claude Opus 4.6 leads DeepSeek V3.1 in 3 of 3 shared categories: General LLM, Reasoning, and Long context.
Claude Opus 4.6
Close. Near-SOTA in Reasoning, rank #2.
DeepSeek V3.1
It used to be. Was SOTA in General LLM.
| Category | Claude Opus 4.6 | DeepSeek V3.1 |
|---|---|---|
| General LLM | #4 · Near-SOTA · General LLM Margin 2.7210884353741562 LMArena leaderboard dataset · Oct 13, 2026 | #95 · #95 in General LLM Margin 64.62585034013605 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #2 · Near-SOTA · Reasoning Margin 2.0547945205479436 LMArena leaderboard dataset · Oct 13, 2026 | #103 · #103 in Reasoning Margin 71.23287671232876 LMArena leaderboard dataset · Oct 13, 2026 |
| Math | #11 · #11 in Math Margin 22.22222222222223 Epoch AI benchmarking hub · Feb 5, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 |
| Science | #32 · #32 in Science Margin — Epoch AI benchmarking hub · Feb 5, 2026 | — |
| Coding | #— · Not enough data Margin — Epoch AI benchmarking hub · Feb 5, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 |
| Coding › Web dev | #35 · Was SOTA · Coding › Web dev Margin 31.775700934579433 LMArena leaderboard dataset · Oct 13, 2026 | — |
| Long context | #2 · Near-SOTA · Long context Margin 0.6802721088435391 LMArena leaderboard dataset · Oct 13, 2026 | #99 · #99 in Long context Margin 67.34693877551021 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 9, 2026 | — |
| Factuality | #3 · Near-SOTA · Factuality Margin 2.9850746268656536 LMArena leaderboard dataset · Oct 13, 2026 | — |
Claude Opus 4.6: $10 per 1M blended tokens.
DeepSeek V3.1: price per 1M tokens is unset in the catalog.
Claude Opus 4.6: closed weights.
DeepSeek V3.1: open weights.
General LLM: As of Oct 14, 2026, Claude Opus 4.6 leads DeepSeek V3.1 in General LLM at #4 against #95.
Reasoning: As of Oct 14, 2026, Claude Opus 4.6 leads DeepSeek V3.1 in Reasoning at #2 against #103.
Long context: As of Oct 14, 2026, Claude Opus 4.6 leads DeepSeek V3.1 in Long context at #2 against #99.
Claude Opus 4.6 · DeepSeek V3.1
Claude Opus 4.6 or DeepSeek V3.1?
As of Oct 14, 2026, Claude Opus 4.6 leads DeepSeek V3.1 in 3 of 3 shared categories: General LLM, Reasoning, and Long context.
Claude Opus 4.6 or DeepSeek V3.1 for General LLM?
As of Oct 14, 2026, Claude Opus 4.6 leads DeepSeek V3.1 in General LLM at #4 against #95.
Claude Opus 4.6 or DeepSeek V3.1 for Reasoning?
As of Oct 14, 2026, Claude Opus 4.6 leads DeepSeek V3.1 in Reasoning at #2 against #103.
Claude Opus 4.6 or DeepSeek V3.1 for Long context?
As of Oct 14, 2026, Claude Opus 4.6 leads DeepSeek V3.1 in Long context at #2 against #99.