Claude Opus 4.6 vs DeepSeek V3.1 Thinking
As of Oct 14, 2026, Claude Opus 4.6 leads DeepSeek V3.1 Thinking 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 Thinking
#73 Best current rank: #73 in Long context, as of Oct 14, 2026.
| Category | Claude Opus 4.6 | DeepSeek V3.1 Thinking |
|---|---|---|
| General LLM | #4 · Near-SOTA · General LLM Margin 2.7210884353741562 LMArena leaderboard dataset · Oct 13, 2026 | #98 · #98 in General LLM Margin 66.66666666666666 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #2 · Near-SOTA · Reasoning Margin 2.0547945205479436 LMArena leaderboard dataset · Oct 13, 2026 | #96 · #96 in Reasoning Margin 66.43835616438356 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 | #73 · #73 in Long context Margin 49.65986394557824 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 Thinking: price per 1M tokens is unset in the catalog.
Claude Opus 4.6: closed weights.
DeepSeek V3.1 Thinking: open weights.
General LLM: As of Oct 14, 2026, Claude Opus 4.6 leads DeepSeek V3.1 Thinking in General LLM at #4 against #98.
Reasoning: As of Oct 14, 2026, Claude Opus 4.6 leads DeepSeek V3.1 Thinking in Reasoning at #2 against #96.
Long context: As of Oct 14, 2026, Claude Opus 4.6 leads DeepSeek V3.1 Thinking in Long context at #2 against #73.
Claude Opus 4.6 · DeepSeek V3.1 Thinking
Claude Opus 4.6 or DeepSeek V3.1 Thinking?
As of Oct 14, 2026, Claude Opus 4.6 leads DeepSeek V3.1 Thinking in 3 of 3 shared categories: General LLM, Reasoning, and Long context.
Claude Opus 4.6 or DeepSeek V3.1 Thinking for General LLM?
As of Oct 14, 2026, Claude Opus 4.6 leads DeepSeek V3.1 Thinking in General LLM at #4 against #98.
Claude Opus 4.6 or DeepSeek V3.1 Thinking for Reasoning?
As of Oct 14, 2026, Claude Opus 4.6 leads DeepSeek V3.1 Thinking in Reasoning at #2 against #96.
Claude Opus 4.6 or DeepSeek V3.1 Thinking for Long context?
As of Oct 14, 2026, Claude Opus 4.6 leads DeepSeek V3.1 Thinking in Long context at #2 against #73.