Claude Haiku 4.5 vs DeepSeek V4.1 Flash
As of Oct 15, 2026, Claude Haiku 4.5 leads DeepSeek V4.1 Flash in 0 of 7 shared categories.
Claude Haiku 4.5
#78 Best recorded rank: #78 in Abstraction (ARC), as of Oct 15, 2026.
DeepSeek V4.1 Flash
Yes. Yes on General LLM (best per dollar); Reasoning (best per dollar). Not the overall leader.
| Category | Claude Haiku 4.5 | DeepSeek V4.1 Flash |
|---|---|---|
| General LLM | #133 · #133 in General LLM Margin 70.74468085106383 LMArena leaderboard dataset · Oct 13, 2026 | #32 · #32 in General LLM Margin 17.02127659574468 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #119 · #119 in Reasoning Margin 63.829787234042556 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 | #109 · #109 in Science Margin — Epoch AI benchmarking hub · Oct 15, 2025 | #36 · #36 in Science Margin — Epoch AI benchmarking hub · Sep 9, 2026 |
| Coding | #— · Not enough data Margin — Scale Labs leaderboards · Oct 14, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 |
| Coding › Web dev | #103 · #103 in Coding › Web dev Margin 81.6 LMArena leaderboard dataset · Oct 13, 2026 | #21 · #21 in Coding › Web dev Margin 16 LMArena leaderboard dataset · Oct 13, 2026 |
| Long context | #107 · #107 in Long context Margin 56.91489361702128 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 | #125 · #125 in Factuality Margin 73.25581395348837 LMArena leaderboard dataset · Oct 13, 2026 | #25 · #25 in Factuality Margin 15.116279069767444 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | #78 · #78 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Oct 15, 2025 | #8 · #8 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Sep 9, 2026 |
Claude Haiku 4.5: $2.0000000000000004 per 1M blended tokens.
DeepSeek V4.1 Flash: $0.23463 per 1M blended tokens.
Claude Haiku 4.5: closed weights.
DeepSeek V4.1 Flash: open weights.
General LLM: As of Oct 15, 2026, DeepSeek V4.1 Flash leads Claude Haiku 4.5 in General LLM at #32 against #133.
Reasoning: As of Oct 15, 2026, DeepSeek V4.1 Flash leads Claude Haiku 4.5 in Reasoning at #29 against #119.
Science: As of Oct 15, 2026, DeepSeek V4.1 Flash leads Claude Haiku 4.5 in Science at #36 against #109.
Coding › Web dev: As of Oct 15, 2026, DeepSeek V4.1 Flash leads Claude Haiku 4.5 in Coding › Web dev at #21 against #103.
Long context: As of Oct 15, 2026, DeepSeek V4.1 Flash leads Claude Haiku 4.5 in Long context at #37 against #107.
Factuality: As of Oct 15, 2026, DeepSeek V4.1 Flash leads Claude Haiku 4.5 in Factuality at #25 against #125.
Abstraction (ARC): As of Oct 15, 2026, DeepSeek V4.1 Flash leads Claude Haiku 4.5 in Abstraction (ARC) at #8 against #78.
Claude Haiku 4.5 · DeepSeek V4.1 Flash
Claude Haiku 4.5 or DeepSeek V4.1 Flash?
As of Oct 15, 2026, Claude Haiku 4.5 leads DeepSeek V4.1 Flash in 0 of 7 shared categories.
Claude Haiku 4.5 or DeepSeek V4.1 Flash for General LLM?
As of Oct 15, 2026, DeepSeek V4.1 Flash leads Claude Haiku 4.5 in General LLM at #32 against #133.
Claude Haiku 4.5 or DeepSeek V4.1 Flash for Reasoning?
As of Oct 15, 2026, DeepSeek V4.1 Flash leads Claude Haiku 4.5 in Reasoning at #29 against #119.
Claude Haiku 4.5 or DeepSeek V4.1 Flash for Science?
As of Oct 15, 2026, DeepSeek V4.1 Flash leads Claude Haiku 4.5 in Science at #36 against #109.