DeepSeek V4 Pro vs GPT-5.5
As of Oct 14, 2026, DeepSeek V4 Pro leads GPT-5.5 in 1 of 6 shared categories: Science.
DeepSeek V4 Pro
#28 Best recorded rank: #28 in Science, as of Oct 14, 2026.
GPT-5.5
It used to be. Was SOTA in General LLM.
| Category | DeepSeek V4 Pro | GPT-5.5 |
|---|---|---|
| General LLM | #44 · #44 in General LLM Margin 29.931972789115648 LMArena leaderboard dataset · Oct 13, 2026 | #21 · Was SOTA · General LLM Margin 14.285714285714292 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #45 · #45 in Reasoning Margin 31.506849315068493 LMArena leaderboard dataset · Oct 13, 2026 | #25 · #25 in Reasoning Margin 17.808219178082197 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 | #28 · #28 in Science Margin — Epoch AI benchmarking hub · Apr 24, 2026 | #30 · #30 in Science Margin — Epoch AI benchmarking hub · Apr 23, 2026 |
| Coding | #— · Not enough data Margin — Epoch AI benchmarking hub · Apr 24, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 |
| Coding › Web dev | #57 · #57 in Coding › Web dev Margin 52.33644859813084 LMArena leaderboard dataset · Oct 13, 2026 | #44 · #44 in Coding › Web dev Margin 40.18691588785047 LMArena leaderboard dataset · Oct 13, 2026 |
| Long context | #43 · #43 in Long context Margin 29.25170068027211 LMArena leaderboard dataset · Oct 13, 2026 | #23 · Was SOTA · Long context Margin 15.646258503401356 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | — | #10 · Was SOTA · Vision Margin 28.94736842105263 Epoch AI benchmarking hub · Apr 23, 2026 |
| Factuality | #41 · #41 in Factuality Margin 31.343283582089555 LMArena leaderboard dataset · Oct 13, 2026 | #5 · Was SOTA · Factuality Margin 4.477611940298502 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | — | #7 · #7 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Apr 23, 2026 |
DeepSeek V4 Pro: $0.4604475 per 1M blended tokens.
GPT-5.5: $11.25 per 1M blended tokens.
DeepSeek V4 Pro: open weights.
GPT-5.5: closed weights.
General LLM: As of Oct 14, 2026, GPT-5.5 leads DeepSeek V4 Pro in General LLM at #21 against #44.
Reasoning: As of Oct 14, 2026, GPT-5.5 leads DeepSeek V4 Pro in Reasoning at #25 against #45.
Science: As of Oct 14, 2026, DeepSeek V4 Pro leads GPT-5.5 in Science at #28 against #30.
Coding › Web dev: As of Oct 14, 2026, GPT-5.5 leads DeepSeek V4 Pro in Coding › Web dev at #44 against #57.
Long context: As of Oct 14, 2026, GPT-5.5 leads DeepSeek V4 Pro in Long context at #23 against #43.
Factuality: As of Oct 14, 2026, GPT-5.5 leads DeepSeek V4 Pro in Factuality at #5 against #41.
DeepSeek V4 Pro or GPT-5.5?
As of Oct 14, 2026, DeepSeek V4 Pro leads GPT-5.5 in 1 of 6 shared categories: Science.
DeepSeek V4 Pro or GPT-5.5 for General LLM?
As of Oct 14, 2026, GPT-5.5 leads DeepSeek V4 Pro in General LLM at #21 against #44.
DeepSeek V4 Pro or GPT-5.5 for Reasoning?
As of Oct 14, 2026, GPT-5.5 leads DeepSeek V4 Pro in Reasoning at #25 against #45.
DeepSeek V4 Pro or GPT-5.5 for Science?
As of Oct 14, 2026, DeepSeek V4 Pro leads GPT-5.5 in Science at #28 against #30.