DeepSeek V4.1 Flash vs O4 Mini
As of Oct 15, 2026, DeepSeek V4.1 Flash leads O4 Mini in 5 of 5 shared categories: General LLM, Reasoning, Science, Factuality, and Abstraction (ARC).
DeepSeek V4.1 Flash
Yes. Yes on General LLM (best per dollar); Reasoning (best per dollar). Not the overall leader.
O4 Mini
It used to be. Was SOTA in Math.
| Category | DeepSeek V4.1 Flash | O4 Mini |
|---|---|---|
| General LLM | #32 · #32 in General LLM Margin 17.02127659574468 LMArena leaderboard dataset · Oct 13, 2026 | #162 · #162 in General LLM Margin 86.17021276595744 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #29 · #29 in Reasoning Margin 15.957446808510639 LMArena leaderboard dataset · Oct 13, 2026 | #168 · #168 in Reasoning Margin 89.8936170212766 LMArena leaderboard dataset · Oct 13, 2026 |
| Math | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 | #23 · Was SOTA · Math Margin 48.888888888888886 Epoch AI benchmarking hub · Apr 16, 2025 |
| Science | #36 · #36 in Science Margin — Epoch AI benchmarking hub · Sep 9, 2026 | #70 · #70 in Science Margin — Epoch AI benchmarking hub · Apr 16, 2025 |
| Coding | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 |
| Coding › Web dev | #21 · #21 in Coding › Web dev Margin 16 LMArena leaderboard dataset · Oct 13, 2026 | — |
| Long context | #37 · #37 in Long context Margin 19.68085106382979 LMArena leaderboard dataset · Oct 13, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Jul 7, 2025 |
| 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 | #25 · #25 in Factuality Margin 15.116279069767444 LMArena leaderboard dataset · Oct 13, 2026 | #160 · #160 in Factuality Margin 93.6046511627907 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | #8 · #8 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Sep 9, 2026 | #39 · #39 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Apr 16, 2025 |
DeepSeek V4.1 Flash: $0.23463 per 1M blended tokens.
O4 Mini: $1.9250000000000003 per 1M blended tokens.
DeepSeek V4.1 Flash: open weights.
O4 Mini: closed weights.
General LLM: As of Oct 15, 2026, DeepSeek V4.1 Flash leads O4 Mini in General LLM at #32 against #162.
Reasoning: As of Oct 15, 2026, DeepSeek V4.1 Flash leads O4 Mini in Reasoning at #29 against #168.
Science: As of Oct 15, 2026, DeepSeek V4.1 Flash leads O4 Mini in Science at #36 against #70.
Factuality: As of Oct 15, 2026, DeepSeek V4.1 Flash leads O4 Mini in Factuality at #25 against #160.
Abstraction (ARC): As of Oct 15, 2026, DeepSeek V4.1 Flash leads O4 Mini in Abstraction (ARC) at #8 against #39.
DeepSeek V4.1 Flash or O4 Mini?
As of Oct 15, 2026, DeepSeek V4.1 Flash leads O4 Mini in 5 of 5 shared categories: General LLM, Reasoning, Science, Factuality, and Abstraction (ARC).
DeepSeek V4.1 Flash or O4 Mini for General LLM?
As of Oct 15, 2026, DeepSeek V4.1 Flash leads O4 Mini in General LLM at #32 against #162.
DeepSeek V4.1 Flash or O4 Mini for Reasoning?
As of Oct 15, 2026, DeepSeek V4.1 Flash leads O4 Mini in Reasoning at #29 against #168.
DeepSeek V4.1 Flash or O4 Mini for Science?
As of Oct 15, 2026, DeepSeek V4.1 Flash leads O4 Mini in Science at #36 against #70.