# Kimi K2 Thinking Turbo vs o3

> o3 is the stronger model overall, scoring 47.5 to 45.8 on the Noometry Index.

- Canonical page: https://noometry.com/compare/kimi-k2-thinking-turbo-vs-o3
- Last updated: 2026-10-10
- Shared benchmarks: 20

## Summary

- They share 20 benchmarks with published results for both. Kimi K2 Thinking Turbo scores higher in 2 categories and o3 in 6 categories; 6 gaps are clear of the uncertainty.
- The widest gap is in long context, where o3 leads 53.3 to 43.2.
- The biggest single-benchmark swing is Chess Puzzles: 20% for Kimi K2 Thinking Turbo and 38% for o3.
- Kimi K2 Thinking Turbo has downloadable open weights; the other is API-only.

## Snapshot

| | Kimi K2 Thinking Turbo | o3 |
|---|---|---|
| Provider | Moonshot AI | OpenAI |
| Noometry Index | 45.8 | 47.5 |
| Rank | 70 | 61 |
| Context | — | 200K |
| Input $/M | — | $2 |
| Output $/M | — | $8 |
| Weights | Open | Proprietary |

## Coding

- Kimi K2 Thinking Turbo: 38.4 (#178)
- o3: 46.8 (#64)

| Benchmark | Kimi K2 Thinking Turbo | o3 |
|---|---|---|
| LMArena Coding | 1454 | 1408 |
| SWE-bench Verified | — | 62.3% |
| SWE-bench Verified (bash only) | — | 58.4% |
| Aider Polyglot | — | 81.3% |
| LMArena WebDev | 1322 | — |
| GSO | — | 8.8% |
| WeirdML | — | 52.4% |
| CadEval | — | 74% |
| ALE-Bench | — | 933.55 |

## Agentic & Tool Use

- Kimi K2 Thinking Turbo: —
- o3: 34.5 (#44)

| Benchmark | Kimi K2 Thinking Turbo | o3 |
|---|---|---|
| Berkeley Function Calling Leaderboard | — | 63% |
| GDPval | — | 30.8% |
| DeepResearch Bench | — | 45.2% |
| OSWorld | — | 23% |
| LMArena Search | — | 1144 |
| METR Time Horizons | — | 65.4% |

## Reasoning

- Kimi K2 Thinking Turbo: 32.5 (#75)
- o3: 32.0 (#78)

| Benchmark | Kimi K2 Thinking Turbo | o3 |
|---|---|---|
| Chess Puzzles | 20% | 38% |
| LMArena Hard Prompts | 1428 | 1402 |
| ARC-AGI-2 | — | 6.5% |
| SimpleBench | — | 53.1% |
| Kagi LLM Benchmark | — | 67.6% |
| ARC-AGI-1 | — | 60.8% |
| CritPt | — | 1.4% |
| EnigmaEval | — | 13.1% |
| Mystery Game Puzzles | — | 29% |
| DTBench | — | 84.8% |
| LMCA | — | 39.7% |
| Epoch Capabilities Index | — | 146.86 |
| ForecastBench | — | 62.5 |

## Math

- Kimi K2 Thinking Turbo: 47.4 (#68)
- o3: 50.2 (#58)

| Benchmark | Kimi K2 Thinking Turbo | o3 |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 83.1% | 84.4% |
| LMArena Math | 1429 | 1426 |
| FrontierMath (Tiers 1-3) | — | 33.3% |
| Omni-MATH | — | 71.4% |
| MATH Level 5 | — | 97.8% |
| FrontierMath (Feb 2025 set) | — | 18.7% |
| FrontierMath Tier 4 (v1) | — | 2.1% |

## Knowledge

- Kimi K2 Thinking Turbo: 50.9 (#69)
- o3: 54.6 (#52)

| Benchmark | Kimi K2 Thinking Turbo | o3 |
|---|---|---|
| GPQA Diamond | 84.2% | 81.8% |
| LMArena Expert | 1439 | 1402 |
| Humanity's Last Exam | — | 20.3% |
| SimpleQA Verified | — | 49.4% |
| MMLU-Pro | — | 85.9% |
| Confabulations | — | 14.4% |
| GPQA (HELM) | — | 75.3% |

## Multimodal

- Kimi K2 Thinking Turbo: —
- o3: 41.4 (#36)

| Benchmark | Kimi K2 Thinking Turbo | o3 |
|---|---|---|
| LMArena Vision | — | 1214 |
| GeoBench | — | 74% |
| VPCT | — | 52% |

## Multilingual

- Kimi K2 Thinking Turbo: 51.4 (#109)
- o3: 51.7 (#105)

| Benchmark | Kimi K2 Thinking Turbo | o3 |
|---|---|---|
| LMArena Non-English | 1398 | 1401 |
| LMArena Chinese | 1456 | 1437 |
| LMArena French | 1425 | 1430 |
| LMArena German | 1390 | 1420 |
| LMArena Japanese | 1357 | 1403 |
| LMArena Korean | 1330 | 1370 |
| LMArena Russian | 1391 | 1406 |
| LMArena Spanish | 1406 | 1395 |

## Instruction Following

- Kimi K2 Thinking Turbo: 74.0 (#109)
- o3: 72.8 (#127)

| Benchmark | Kimi K2 Thinking Turbo | o3 |
|---|---|---|
| LMArena Instruction Following | 1403 | 1368 |
| IFEval | — | 86.9% |

## Long Context

- Kimi K2 Thinking Turbo: 43.2 (#102)
- o3: 53.3 (#6)

| Benchmark | Kimi K2 Thinking Turbo | o3 |
|---|---|---|
| LMArena Longer Query | 1415 | 1372 |
| Fiction.LiveBench | — | 88.9% |
| CL-bench | — | 17.8% |

## Writing & Preference

- Kimi K2 Thinking Turbo: 60.0 (#104)
- o3: 63.5 (#64)

| Benchmark | Kimi K2 Thinking Turbo | o3 |
|---|---|---|
| LMArena Text | 1415 | 1410 |
| LMArena Creative Writing | 1374 | 1359 |
| LMArena Multi-Turn | 1414 | 1405 |
| Short-Story Creative Writing | — | 83.9% |
| EQ-Bench Creative Writing | — | 1676 |
| WildBench | — | 86.1% |

## FAQ

### Is Kimi K2 Thinking Turbo better than o3?

o3 is the stronger model overall, scoring 47.5 to 45.8 on the Noometry Index.

### Is Kimi K2 Thinking Turbo or o3 better for coding?

o3 scores higher on coding benchmarks: 46.8 versus 38.4 in the Noometry coding category.

### How many benchmarks do Kimi K2 Thinking Turbo and o3 share?

20 benchmarks have published results for both models. Kimi K2 Thinking Turbo has 21 scored results on Noometry and o3 has 63.