Kimi K2 0905 Preview vs O3 Mini
As of Oct 15, 2026, Kimi K2 0905 Preview leads O3 Mini in 2 of 3 shared categories: Reasoning and Long context.
Kimi K2 0905 Preview
#120 Best current rank: #120 in General LLM, as of Oct 15, 2026.
O3 Mini
It used to be. Was SOTA in Reasoning.
| Category | Kimi K2 0905 Preview | O3 Mini |
|---|---|---|
| General LLM | #120 · #120 in General LLM Margin 63.829787234042556 LMArena leaderboard dataset · Oct 13, 2026 | #10 · #10 in General LLM Margin — LMArena leaderboard dataset · Apr 16, 2025 |
| Reasoning | #122 · #122 in Reasoning Margin 65.42553191489361 LMArena leaderboard dataset · Oct 13, 2026 | #172 · Was SOTA · Reasoning Margin 92.02127659574468 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 | #151 · #151 in Long context Margin 80.31914893617021 LMArena leaderboard dataset · Oct 13, 2026 | #186 · #186 in Long context Margin 98.93617021276596 LMArena leaderboard dataset · Oct 13, 2026 |
| Factuality | #140 · #140 in Factuality Margin 81.97674418604652 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 |
Kimi K2 0905 Preview: price per 1M tokens is unset in the catalog.
O3 Mini: $1.9250000000000003 per 1M blended tokens.
Kimi K2 0905 Preview: open weights.
O3 Mini: closed weights.
General LLM: As of Oct 15, 2026, O3 Mini leads Kimi K2 0905 Preview in General LLM at #10 against #120.
Reasoning: As of Oct 15, 2026, Kimi K2 0905 Preview leads O3 Mini in Reasoning at #122 against #172.
Long context: As of Oct 15, 2026, Kimi K2 0905 Preview leads O3 Mini in Long context at #151 against #186.
Kimi K2 0905 Preview · O3 Mini
Kimi K2 0905 Preview or O3 Mini?
As of Oct 15, 2026, Kimi K2 0905 Preview leads O3 Mini in 2 of 3 shared categories: Reasoning and Long context.
Kimi K2 0905 Preview or O3 Mini for General LLM?
As of Oct 15, 2026, O3 Mini leads Kimi K2 0905 Preview in General LLM at #10 against #120.
Kimi K2 0905 Preview or O3 Mini for Reasoning?
As of Oct 15, 2026, Kimi K2 0905 Preview leads O3 Mini in Reasoning at #122 against #172.
Kimi K2 0905 Preview or O3 Mini for Long context?
As of Oct 15, 2026, Kimi K2 0905 Preview leads O3 Mini in Long context at #151 against #186.