Claude Opus 5.5 vs DeepSeek V4 Pro High Preview
As of Oct 14, 2026, Claude Opus 5.5 leads DeepSeek V4 Pro High Preview in 5 of 5 shared categories: General LLM, Reasoning, Coding › Web dev, Long context, and Factuality.
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 V4 Pro High Preview
#51 Best current rank: #51 in General LLM, as of Oct 14, 2026.
| Category | Claude Opus 5.5 | DeepSeek V4 Pro High Preview |
|---|---|---|
| General LLM | #2 · Near-SOTA · General LLM Margin 1.3605442176870781 LMArena leaderboard dataset · Oct 13, 2026 | #51 · #51 in General LLM Margin 34.69387755102041 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #1 · Co-SOTA · Reasoning Margin 0 LMArena leaderboard dataset · Oct 13, 2026 | #56 · #56 in Reasoning Margin 39.04109589041096 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 | — |
| 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 | #54 · #54 in Coding › Web dev Margin 49.532710280373834 LMArena leaderboard dataset · Oct 13, 2026 |
| Long context | #1 · Co-SOTA · Long context Margin 0 LMArena leaderboard dataset · Oct 13, 2026 | #51 · #51 in Long context Margin 34.69387755102041 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 | #52 · #52 in Factuality Margin 39.55223880597014 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 V4 Pro High Preview: price per 1M tokens is unset in the catalog.
Claude Opus 5.5: closed weights.
DeepSeek V4 Pro High Preview: open weights.
General LLM: As of Oct 14, 2026, Claude Opus 5.5 leads DeepSeek V4 Pro High Preview in General LLM at #2 against #51.
Reasoning: As of Oct 14, 2026, Claude Opus 5.5 leads DeepSeek V4 Pro High Preview in Reasoning at #1 against #56.
Coding › Web dev: As of Oct 14, 2026, Claude Opus 5.5 leads DeepSeek V4 Pro High Preview in Coding › Web dev at #1 against #54.
Long context: As of Oct 14, 2026, Claude Opus 5.5 leads DeepSeek V4 Pro High Preview in Long context at #1 against #51.
Factuality: As of Oct 14, 2026, Claude Opus 5.5 leads DeepSeek V4 Pro High Preview in Factuality at #1 against #52.
Claude Opus 5.5 · DeepSeek V4 Pro High Preview
Claude Opus 5.5 or DeepSeek V4 Pro High Preview?
As of Oct 14, 2026, Claude Opus 5.5 leads DeepSeek V4 Pro High Preview in 5 of 5 shared categories: General LLM, Reasoning, Coding › Web dev, Long context, and Factuality.
Claude Opus 5.5 or DeepSeek V4 Pro High Preview for General LLM?
As of Oct 14, 2026, Claude Opus 5.5 leads DeepSeek V4 Pro High Preview in General LLM at #2 against #51.
Claude Opus 5.5 or DeepSeek V4 Pro High Preview for Reasoning?
As of Oct 14, 2026, Claude Opus 5.5 leads DeepSeek V4 Pro High Preview in Reasoning at #1 against #56.
Claude Opus 5.5 or DeepSeek V4 Pro High Preview for Coding › Web dev?
As of Oct 14, 2026, Claude Opus 5.5 leads DeepSeek V4 Pro High Preview in Coding › Web dev at #1 against #54.