DeepSeek V4 Flash High Preview vs O3 Mini
As of Oct 14, 2026, DeepSeek V4 Flash High Preview leads O3 Mini in 2 of 3 shared categories: Reasoning and Long context.
DeepSeek V4 Flash High Preview
#65 Best current rank: #65 in Coding › Web dev, as of Oct 14, 2026.
O3 Mini
It used to be. Was SOTA in Reasoning.
| Category | DeepSeek V4 Flash High Preview | O3 Mini |
|---|---|---|
| General LLM | #71 · #71 in General LLM Margin 48.29931972789116 LMArena leaderboard dataset · Oct 13, 2026 | #7 · #7 in General LLM Margin — LMArena leaderboard dataset · Apr 16, 2025 |
| Reasoning | #74 · #74 in Reasoning Margin 51.36986301369863 LMArena leaderboard dataset · Oct 13, 2026 | #133 · Was SOTA · Reasoning Margin 91.78082191780823 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 | — | #76 · #76 in Science Margin — Epoch AI benchmarking hub · Jan 31, 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 | #65 · #65 in Coding › Web dev Margin 59.81308411214953 LMArena leaderboard dataset · Oct 13, 2026 | — |
| Long context | #68 · #68 in Long context Margin 46.25850340136054 LMArena leaderboard dataset · Oct 13, 2026 | #145 · #145 in Long context Margin 98.63945578231292 LMArena leaderboard dataset · Oct 13, 2026 |
| Factuality | #77 · #77 in Factuality Margin 58.208955223880594 LMArena leaderboard dataset · Oct 13, 2026 | #— · Not enough data Margin — Epoch AI benchmarking hub · Jan 31, 2025 |
| Abstraction (ARC) | — | #51 · #51 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Jan 31, 2025 |
DeepSeek V4 Flash High Preview: price per 1M tokens is unset in the catalog.
O3 Mini: $1.9250000000000003 per 1M blended tokens.
DeepSeek V4 Flash High Preview: open weights.
O3 Mini: closed weights.
General LLM: As of Oct 14, 2026, O3 Mini leads DeepSeek V4 Flash High Preview in General LLM at #7 against #71.
Reasoning: As of Oct 14, 2026, DeepSeek V4 Flash High Preview leads O3 Mini in Reasoning at #74 against #133.
Long context: As of Oct 14, 2026, DeepSeek V4 Flash High Preview leads O3 Mini in Long context at #68 against #145.
DeepSeek V4 Flash High Preview · O3 Mini
DeepSeek V4 Flash High Preview or O3 Mini?
As of Oct 14, 2026, DeepSeek V4 Flash High Preview leads O3 Mini in 2 of 3 shared categories: Reasoning and Long context.
DeepSeek V4 Flash High Preview or O3 Mini for General LLM?
As of Oct 14, 2026, O3 Mini leads DeepSeek V4 Flash High Preview in General LLM at #7 against #71.
DeepSeek V4 Flash High Preview or O3 Mini for Reasoning?
As of Oct 14, 2026, DeepSeek V4 Flash High Preview leads O3 Mini in Reasoning at #74 against #133.
DeepSeek V4 Flash High Preview or O3 Mini for Long context?
As of Oct 14, 2026, DeepSeek V4 Flash High Preview leads O3 Mini in Long context at #68 against #145.