DeepSeek R1 vs DeepSeek V4.1 Flash
As of Oct 15, 2026, DeepSeek R1 leads DeepSeek V4.1 Flash in 0 of 5 shared categories.
DeepSeek R1
It used to be. Was SOTA in General LLM.
DeepSeek V4.1 Flash
Yes. Yes on General LLM (best per dollar); Reasoning (best per dollar). Not the overall leader.
| Category | DeepSeek R1 | DeepSeek V4.1 Flash |
|---|---|---|
| General LLM | #153 · Was SOTA · General LLM Margin 81.38297872340425 LMArena leaderboard dataset · Oct 13, 2026 | #32 · #32 in General LLM Margin 17.02127659574468 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #151 · Was SOTA · Reasoning Margin 80.85106382978724 LMArena leaderboard dataset · Oct 13, 2026 | #29 · #29 in Reasoning Margin 15.957446808510639 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 | #90 · #90 in Science Margin — Epoch AI benchmarking hub · Jan 20, 2025 | #36 · #36 in Science Margin — Epoch AI benchmarking hub · Sep 9, 2026 |
| 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 | #160 · Was SOTA · Long context Margin 85.1063829787234 LMArena leaderboard dataset · Oct 13, 2026 | #37 · #37 in Long context Margin 19.68085106382979 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | — | #21 · #21 in Vision Margin 57.89473684210526 Epoch AI benchmarking hub · Sep 9, 2026 |
| Factuality | — | #25 · #25 in Factuality Margin 15.116279069767444 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | #77 · #77 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Jan 20, 2025 | #8 · #8 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Sep 9, 2026 |
DeepSeek R1: $1.15 per 1M blended tokens.
DeepSeek V4.1 Flash: $0.23463 per 1M blended tokens.
DeepSeek R1: open weights.
DeepSeek V4.1 Flash: open weights.
General LLM: As of Oct 15, 2026, DeepSeek V4.1 Flash leads DeepSeek R1 in General LLM at #32 against #153.
Reasoning: As of Oct 15, 2026, DeepSeek V4.1 Flash leads DeepSeek R1 in Reasoning at #29 against #151.
Science: As of Oct 15, 2026, DeepSeek V4.1 Flash leads DeepSeek R1 in Science at #36 against #90.
Long context: As of Oct 15, 2026, DeepSeek V4.1 Flash leads DeepSeek R1 in Long context at #37 against #160.
Abstraction (ARC): As of Oct 15, 2026, DeepSeek V4.1 Flash leads DeepSeek R1 in Abstraction (ARC) at #8 against #77.
DeepSeek R1 · DeepSeek V4.1 Flash
DeepSeek R1 or DeepSeek V4.1 Flash?
As of Oct 15, 2026, DeepSeek R1 leads DeepSeek V4.1 Flash in 0 of 5 shared categories.
DeepSeek R1 or DeepSeek V4.1 Flash for General LLM?
As of Oct 15, 2026, DeepSeek V4.1 Flash leads DeepSeek R1 in General LLM at #32 against #153.
DeepSeek R1 or DeepSeek V4.1 Flash for Reasoning?
As of Oct 15, 2026, DeepSeek V4.1 Flash leads DeepSeek R1 in Reasoning at #29 against #151.
DeepSeek R1 or DeepSeek V4.1 Flash for Science?
As of Oct 15, 2026, DeepSeek V4.1 Flash leads DeepSeek R1 in Science at #36 against #90.