DeepSeek V4.1 Flash vs GPT-5
As of Oct 14, 2026, DeepSeek V4.1 Flash leads GPT-5 in 7 of 7 shared categories: General LLM, Reasoning, Science, Coding › Web dev, Long context, Factuality, and Abstraction (ARC).
DeepSeek V4.1 Flash
Yes. Yes on General LLM (best per dollar); Reasoning (best per dollar). Not the overall leader.
GPT-5
It used to be. Was SOTA in General LLM.
| Category | DeepSeek V4.1 Flash | GPT-5 |
|---|---|---|
| General LLM | #29 · #29 in General LLM Margin 19.72789115646259 LMArena leaderboard dataset · Oct 13, 2026 | #76 · Was SOTA · General LLM Margin 51.70068027210884 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #27 · #27 in Reasoning Margin 19.178082191780817 LMArena leaderboard dataset · Oct 13, 2026 | #78 · Was SOTA · Reasoning Margin 54.10958904109589 LMArena leaderboard dataset · Oct 13, 2026 |
| Math | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 | #15 · Was SOTA · Math Margin 31.111111111111114 Epoch AI benchmarking hub · Aug 7, 2025 |
| Science | #36 · #36 in Science Margin — Epoch AI benchmarking hub · Sep 9, 2026 | #54 · #54 in Science Margin — Epoch AI benchmarking hub · Aug 7, 2025 |
| Coding | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 | #— · Not enough data Margin — Epoch AI benchmarking hub · Aug 7, 2025 |
| Coding › Web dev | #19 · #19 in Coding › Web dev Margin 16.822429906542055 LMArena leaderboard dataset · Oct 13, 2026 | #66 · #66 in Coding › Web dev Margin 60.74766355140187 LMArena leaderboard dataset · Oct 13, 2026 |
| Long context | #32 · #32 in Long context Margin 21.768707482993193 LMArena leaderboard dataset · Oct 13, 2026 | #107 · Was SOTA · Long context Margin 72.78911564625851 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | #21 · #21 in Vision Margin 57.89473684210526 Epoch AI benchmarking hub · Sep 9, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 9, 2026 |
| Factuality | #22 · #22 in Factuality Margin 17.164179104477626 LMArena leaderboard dataset · Oct 13, 2026 | #93 · #93 in Factuality Margin 70.14925373134328 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | #8 · #8 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Sep 9, 2026 | #34 · #34 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Aug 7, 2025 |
DeepSeek V4.1 Flash: $0.16319999999999998 per 1M blended tokens.
GPT-5: $3.4375000000000004 per 1M blended tokens.
DeepSeek V4.1 Flash: open weights.
GPT-5: closed weights.
General LLM: As of Oct 14, 2026, DeepSeek V4.1 Flash leads GPT-5 in General LLM at #29 against #76.
Reasoning: As of Oct 14, 2026, DeepSeek V4.1 Flash leads GPT-5 in Reasoning at #27 against #78.
Science: As of Oct 14, 2026, DeepSeek V4.1 Flash leads GPT-5 in Science at #36 against #54.
Coding › Web dev: As of Oct 14, 2026, DeepSeek V4.1 Flash leads GPT-5 in Coding › Web dev at #19 against #66.
Long context: As of Oct 14, 2026, DeepSeek V4.1 Flash leads GPT-5 in Long context at #32 against #107.
Factuality: As of Oct 14, 2026, DeepSeek V4.1 Flash leads GPT-5 in Factuality at #22 against #93.
Abstraction (ARC): As of Oct 14, 2026, DeepSeek V4.1 Flash leads GPT-5 in Abstraction (ARC) at #8 against #34.
DeepSeek V4.1 Flash or GPT-5?
As of Oct 14, 2026, DeepSeek V4.1 Flash leads GPT-5 in 7 of 7 shared categories: General LLM, Reasoning, Science, Coding › Web dev, Long context, Factuality, and Abstraction (ARC).
DeepSeek V4.1 Flash or GPT-5 for General LLM?
As of Oct 14, 2026, DeepSeek V4.1 Flash leads GPT-5 in General LLM at #29 against #76.
DeepSeek V4.1 Flash or GPT-5 for Reasoning?
As of Oct 14, 2026, DeepSeek V4.1 Flash leads GPT-5 in Reasoning at #27 against #78.
DeepSeek V4.1 Flash or GPT-5 for Science?
As of Oct 14, 2026, DeepSeek V4.1 Flash leads GPT-5 in Science at #36 against #54.