DeepSeek V4.1 Flash vs GPT-5.6 Luna
As of Oct 14, 2026, DeepSeek V4.1 Flash leads GPT-5.6 Luna in 6 of 8 shared categories: General LLM, Reasoning, 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-5.6 Luna
#16 Best current rank: #16 in Coding, as of Oct 14, 2026.
| Category | DeepSeek V4.1 Flash | GPT-5.6 Luna |
|---|---|---|
| General LLM | #29 · #29 in General LLM Margin 19.72789115646259 LMArena leaderboard dataset · Oct 13, 2026 | #53 · #53 in General LLM Margin 36.054421768707485 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #27 · #27 in Reasoning Margin 19.178082191780817 LMArena leaderboard dataset · Oct 13, 2026 | #55 · #55 in Reasoning Margin 38.35616438356164 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 | #36 · #36 in Science Margin — Epoch AI benchmarking hub · Sep 9, 2026 | #25 · #25 in Science Margin — Epoch AI benchmarking hub · Jul 9, 2026 |
| Coding | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 | #16 · #16 in Coding Margin 77.27272727272728 Terminal-Bench Harbor Hub · Oct 6, 2026 |
| Coding › Agentic | — | #16 · #16 in Coding › Agentic Margin 77.27272727272728 Terminal-Bench Harbor Hub · Oct 6, 2026 |
| Coding › Web dev | #19 · #19 in Coding › Web dev Margin 16.822429906542055 LMArena leaderboard dataset · Oct 13, 2026 | #43 · #43 in Coding › Web dev Margin 39.25233644859813 LMArena leaderboard dataset · Oct 13, 2026 |
| Long context | #32 · #32 in Long context Margin 21.768707482993193 LMArena leaderboard dataset · Oct 13, 2026 | #65 · #65 in Long context Margin 44.21768707482993 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | #21 · #21 in Vision Margin 57.89473684210526 Epoch AI benchmarking hub · Sep 9, 2026 | #19 · #19 in Vision Margin 52.63157894736842 Epoch AI benchmarking hub · Jul 9, 2026 |
| Factuality | #22 · #22 in Factuality Margin 17.164179104477626 LMArena leaderboard dataset · Oct 13, 2026 | #35 · #35 in Factuality Margin 26.86567164179104 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | #8 · #8 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Sep 9, 2026 | #19 · #19 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Jul 9, 2026 |
DeepSeek V4.1 Flash: $0.23463 per 1M blended tokens.
GPT-5.6 Luna: $0.44999999999999996 per 1M blended tokens.
DeepSeek V4.1 Flash: open weights.
GPT-5.6 Luna: closed weights.
General LLM: As of Oct 14, 2026, DeepSeek V4.1 Flash leads GPT-5.6 Luna in General LLM at #29 against #53.
Reasoning: As of Oct 14, 2026, DeepSeek V4.1 Flash leads GPT-5.6 Luna in Reasoning at #27 against #55.
Science: As of Oct 14, 2026, GPT-5.6 Luna leads DeepSeek V4.1 Flash in Science at #25 against #36.
Coding › Web dev: As of Oct 14, 2026, DeepSeek V4.1 Flash leads GPT-5.6 Luna in Coding › Web dev at #19 against #43.
Long context: As of Oct 14, 2026, DeepSeek V4.1 Flash leads GPT-5.6 Luna in Long context at #32 against #65.
Vision: As of Oct 14, 2026, GPT-5.6 Luna leads DeepSeek V4.1 Flash in Vision at #19 against #21.
Factuality: As of Oct 14, 2026, DeepSeek V4.1 Flash leads GPT-5.6 Luna in Factuality at #22 against #35.
Abstraction (ARC): As of Oct 14, 2026, DeepSeek V4.1 Flash leads GPT-5.6 Luna in Abstraction (ARC) at #8 against #19.
DeepSeek V4.1 Flash · GPT-5.6 Luna
DeepSeek V4.1 Flash or GPT-5.6 Luna?
As of Oct 14, 2026, DeepSeek V4.1 Flash leads GPT-5.6 Luna in 6 of 8 shared categories: General LLM, Reasoning, Coding › Web dev, Long context, Factuality, and Abstraction (ARC).
DeepSeek V4.1 Flash or GPT-5.6 Luna for General LLM?
As of Oct 14, 2026, DeepSeek V4.1 Flash leads GPT-5.6 Luna in General LLM at #29 against #53.
DeepSeek V4.1 Flash or GPT-5.6 Luna for Reasoning?
As of Oct 14, 2026, DeepSeek V4.1 Flash leads GPT-5.6 Luna in Reasoning at #27 against #55.
DeepSeek V4.1 Flash or GPT-5.6 Luna for Science?
As of Oct 14, 2026, GPT-5.6 Luna leads DeepSeek V4.1 Flash in Science at #25 against #36.