Model comparison
Kimi K2 Thinking Turbo vs o3-pro
Kimi K2 Thinking Turbo is the stronger model overall, scoring 45.4 to 42.7 on the Noometry Index.
Last verified . 0 shared benchmarks.
Summary
- The widest gap is in long context, where o3-pro leads 72.1 to 43.2.
- Kimi K2 Thinking Turbo has downloadable open weights; the other is API-only.
Side by side
| Kimi K2 Thinking Turbo | o3-pro | |
|---|---|---|
| Provider | Moonshot AI | OpenAI |
| Noometry Index | 45.4 | 42.7 |
| Released | 2025-11-06 | 2025-06-10 |
| Weights | Open | Proprietary |
| Context window | — | 200K |
| Max output | — | 100K |
| Input $ / M tokens | — | $20 |
| Output $ / M tokens | — | $80 |
| Results tracked | 21 | 12 |
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Category by category
Coding o3-pro leads
Kimi K2 Thinking Turbo: 38.1 (#166), o3-pro: 55.1 (#22)
| Benchmark | Kimi K2 Thinking Turbo | o3-pro |
|---|---|---|
| Aider Polyglot | — | 84.9% |
| LMArena WebDev | 1322 | — |
| WeirdML | — | 58.2% |
| LMArena Coding | 1454 | — |
Reasoning Kimi K2 Thinking Turbo leads
Kimi K2 Thinking Turbo: 31.4 (#72), o3-pro: 24.1 (#152)
| Benchmark | Kimi K2 Thinking Turbo | o3-pro |
|---|---|---|
| ARC-AGI-2 | — | 4.9% |
| Kagi LLM Benchmark | — | 72.1% |
| ARC-AGI-1 | — | 59.3% |
| Chess Puzzles | 20% | — |
| LMArena Hard Prompts | 1428 | — |
| DTBench | — | 86.9% |
| LMCA | — | 38.5% |
| Epoch Capabilities Index | — | 147.43 |
Math Not comparable
Kimi K2 Thinking Turbo: 45.5 (#62), o3-pro: —
| Benchmark | Kimi K2 Thinking Turbo | o3-pro |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 83.1% | — |
| LMArena Math | 1429 | — |
Knowledge Kimi K2 Thinking Turbo leads
Kimi K2 Thinking Turbo: 50.9 (#64), o3-pro: 29.0 (#234)
| Benchmark | Kimi K2 Thinking Turbo | o3-pro |
|---|---|---|
| GPQA Diamond | 84.2% | — |
| Confabulations | — | 14.2% |
| Vectara Hallucination Rate | — | 23.3% |
| LMArena Expert | 1439 | — |
Multilingual Not comparable
Kimi K2 Thinking Turbo: 51.6 (#104), o3-pro: —
| Benchmark | Kimi K2 Thinking Turbo | o3-pro |
|---|---|---|
| LMArena Non-English | 1398 | — |
| LMArena Chinese | 1457 | — |
| LMArena French | 1425 | — |
| LMArena German | 1390 | — |
| LMArena Japanese | 1356 | — |
| LMArena Korean | 1329 | — |
| LMArena Russian | 1390 | — |
| LMArena Spanish | 1407 | — |
Instruction Following Not comparable
Kimi K2 Thinking Turbo: 74.2 (#103), o3-pro: —
| Benchmark | Kimi K2 Thinking Turbo | o3-pro |
|---|---|---|
| LMArena Instruction Following | 1403 | — |
Long Context o3-pro leads
Kimi K2 Thinking Turbo: 43.2 (#99), o3-pro: 72.1 (#1)
| Benchmark | Kimi K2 Thinking Turbo | o3-pro |
|---|---|---|
| Fiction.LiveBench | — | 97.2% |
| LMArena Longer Query | 1415 | — |
Writing & Preference Kimi K2 Thinking Turbo leads
Kimi K2 Thinking Turbo: 60.2 (#99), o3-pro: 57.1 (#128)
| Benchmark | Kimi K2 Thinking Turbo | o3-pro |
|---|---|---|
| LMArena Text | 1415 | — |
| LMArena Creative Writing | 1373 | — |
| Short-Story Creative Writing | — | 84.4% |
| LMArena Multi-Turn | 1414 | — |
Frequently asked questions
Is Kimi K2 Thinking Turbo better than o3-pro?
Kimi K2 Thinking Turbo is the stronger model overall, scoring 45.4 to 42.7 on the Noometry Index.
Is Kimi K2 Thinking Turbo or o3-pro better for coding?
o3-pro scores higher on coding benchmarks: 55.1 versus 38.1 in the Noometry coding category.
How many benchmarks do Kimi K2 Thinking Turbo and o3-pro share?
0 benchmarks have published results for both models. Kimi K2 Thinking Turbo has 21 scored results on Noometry and o3-pro has 12.