DeepSeek V3.1 Thinking vs O3 Mini
As of Oct 14, 2026, DeepSeek V3.1 Thinking leads O3 Mini in 2 of 3 shared categories: Reasoning and Long context.
DeepSeek V3.1 Thinking
#73 Best current rank: #73 in Long context, as of Oct 14, 2026.
O3 Mini
It used to be. Was SOTA in Reasoning.
| Category | DeepSeek V3.1 Thinking | O3 Mini |
|---|---|---|
| General LLM | #98 · #98 in General LLM Margin 66.66666666666666 LMArena leaderboard dataset · Oct 13, 2026 | #7 · #7 in General LLM Margin — LMArena leaderboard dataset · Apr 16, 2025 |
| Reasoning | #96 · #96 in Reasoning Margin 66.43835616438356 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 |
| Long context | #73 · #73 in Long context Margin 49.65986394557824 LMArena leaderboard dataset · Oct 13, 2026 | #145 · #145 in Long context Margin 98.63945578231292 LMArena leaderboard dataset · Oct 13, 2026 |
| Factuality | — | #— · 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 V3.1 Thinking: price per 1M tokens is unset in the catalog.
O3 Mini: $1.9250000000000003 per 1M blended tokens.
DeepSeek V3.1 Thinking: open weights.
O3 Mini: closed weights.
General LLM: As of Oct 14, 2026, O3 Mini leads DeepSeek V3.1 Thinking in General LLM at #7 against #98.
Reasoning: As of Oct 14, 2026, DeepSeek V3.1 Thinking leads O3 Mini in Reasoning at #96 against #133.
Long context: As of Oct 14, 2026, DeepSeek V3.1 Thinking leads O3 Mini in Long context at #73 against #145.
DeepSeek V3.1 Thinking · O3 Mini
DeepSeek V3.1 Thinking or O3 Mini?
As of Oct 14, 2026, DeepSeek V3.1 Thinking leads O3 Mini in 2 of 3 shared categories: Reasoning and Long context.
DeepSeek V3.1 Thinking or O3 Mini for General LLM?
As of Oct 14, 2026, O3 Mini leads DeepSeek V3.1 Thinking in General LLM at #7 against #98.
DeepSeek V3.1 Thinking or O3 Mini for Reasoning?
As of Oct 14, 2026, DeepSeek V3.1 Thinking leads O3 Mini in Reasoning at #96 against #133.
DeepSeek V3.1 Thinking or O3 Mini for Long context?
As of Oct 14, 2026, DeepSeek V3.1 Thinking leads O3 Mini in Long context at #73 against #145.