DeepSeek V4.1 Flash vs O1
As of Oct 14, 2026, DeepSeek V4.1 Flash leads O1 in 5 of 5 shared categories: General LLM, Reasoning, Science, Long context, and Abstraction (ARC).
DeepSeek V4.1 Flash
Yes. Yes on General LLM (best per dollar); Factuality (best per dollar). Not the overall leader.
O1
It used to be. Was SOTA in General LLM.
| Category | DeepSeek V4.1 Flash | O1 |
|---|---|---|
| General LLM | #29 · #29 in General LLM Margin 19.72789115646259 LMArena leaderboard dataset · Oct 13, 2026 | #112 · Was SOTA · General LLM Margin 76.19047619047619 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #27 · #27 in Reasoning Margin 19.178082191780817 LMArena leaderboard dataset · Oct 13, 2026 | #117 · Was SOTA · Reasoning Margin 80.82191780821918 LMArena leaderboard dataset · Oct 13, 2026 |
| Math | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 | #34 · #34 in Math Margin 75.55555555555556 Epoch AI benchmarking hub · Dec 17, 2024 |
| Science | #36 · #36 in Science Margin — Epoch AI benchmarking hub · Sep 9, 2026 | #77 · #77 in Science Margin — Epoch AI benchmarking hub · Dec 17, 2024 |
| Coding | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 |
| Coding › Web dev | #19 · #19 in Coding › Web dev Margin 16.822429906542055 LMArena leaderboard dataset · Oct 13, 2026 | — |
| Long context | #32 · #32 in Long context Margin 21.768707482993193 LMArena leaderboard dataset · Oct 13, 2026 | #108 · Was SOTA · Long context Margin 73.46938775510205 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 | #— · Not enough data Margin — Epoch AI benchmarking hub · Dec 17, 2024 |
| Abstraction (ARC) | #8 · #8 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Sep 9, 2026 | #57 · #57 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Dec 17, 2024 |
DeepSeek V4.1 Flash: $0.23787 per 1M blended tokens.
O1: $26.25 per 1M blended tokens.
DeepSeek V4.1 Flash: open weights.
O1: closed weights.
General LLM: As of Oct 14, 2026, DeepSeek V4.1 Flash leads O1 in General LLM at #29 against #112.
Reasoning: As of Oct 14, 2026, DeepSeek V4.1 Flash leads O1 in Reasoning at #27 against #117.
Science: As of Oct 14, 2026, DeepSeek V4.1 Flash leads O1 in Science at #36 against #77.
Long context: As of Oct 14, 2026, DeepSeek V4.1 Flash leads O1 in Long context at #32 against #108.
Abstraction (ARC): As of Oct 14, 2026, DeepSeek V4.1 Flash leads O1 in Abstraction (ARC) at #8 against #57.
DeepSeek V4.1 Flash or O1?
As of Oct 14, 2026, DeepSeek V4.1 Flash leads O1 in 5 of 5 shared categories: General LLM, Reasoning, Science, Long context, and Abstraction (ARC).
DeepSeek V4.1 Flash or O1 for General LLM?
As of Oct 14, 2026, DeepSeek V4.1 Flash leads O1 in General LLM at #29 against #112.
DeepSeek V4.1 Flash or O1 for Reasoning?
As of Oct 14, 2026, DeepSeek V4.1 Flash leads O1 in Reasoning at #27 against #117.
DeepSeek V4.1 Flash or O1 for Science?
As of Oct 14, 2026, DeepSeek V4.1 Flash leads O1 in Science at #36 against #77.