DeepSeek V3.1 Terminus vs O3 Mini
As of Oct 14, 2026, DeepSeek V3.1 Terminus leads O3 Mini in 2 of 3 shared categories: Reasoning and Long context.
DeepSeek V3.1 Terminus
#99 Best current rank: #99 in General LLM, as of Oct 14, 2026.
O3 Mini
It used to be. Was SOTA in Reasoning.
| Category | DeepSeek V3.1 Terminus | O3 Mini |
|---|---|---|
| General LLM | #99 · #99 in General LLM Margin 67.34693877551021 LMArena leaderboard dataset · Oct 13, 2026 | #7 · #7 in General LLM Margin — LMArena leaderboard dataset · Apr 16, 2025 |
| Reasoning | #108 · #108 in Reasoning Margin 74.65753424657534 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 |
| 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 | #100 · #100 in Long context Margin 68.02721088435374 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 Terminus: $0.4525 per 1M blended tokens.
O3 Mini: $1.9250000000000003 per 1M blended tokens.
DeepSeek V3.1 Terminus: open weights.
O3 Mini: closed weights.
General LLM: As of Oct 14, 2026, O3 Mini leads DeepSeek V3.1 Terminus in General LLM at #7 against #99.
Reasoning: As of Oct 14, 2026, DeepSeek V3.1 Terminus leads O3 Mini in Reasoning at #108 against #133.
Long context: As of Oct 14, 2026, DeepSeek V3.1 Terminus leads O3 Mini in Long context at #100 against #145.
DeepSeek V3.1 Terminus · O3 Mini
DeepSeek V3.1 Terminus or O3 Mini?
As of Oct 14, 2026, DeepSeek V3.1 Terminus leads O3 Mini in 2 of 3 shared categories: Reasoning and Long context.
DeepSeek V3.1 Terminus or O3 Mini for General LLM?
As of Oct 14, 2026, O3 Mini leads DeepSeek V3.1 Terminus in General LLM at #7 against #99.
DeepSeek V3.1 Terminus or O3 Mini for Reasoning?
As of Oct 14, 2026, DeepSeek V3.1 Terminus leads O3 Mini in Reasoning at #108 against #133.
DeepSeek V3.1 Terminus or O3 Mini for Long context?
As of Oct 14, 2026, DeepSeek V3.1 Terminus leads O3 Mini in Long context at #100 against #145.