# Claude 3 Opus vs Kimi K2 Thinking Turbo

> Kimi K2 Thinking Turbo is the stronger model overall, scoring 45.8 to 29.5 on the Noometry Index.

- Canonical page: https://noometry.com/compare/claude-3-opus-vs-kimi-k2-thinking-turbo
- Last updated: 2026-10-12
- Shared benchmarks: 20

## Summary

- They share 20 benchmarks with published results for both. Claude 3 Opus scores higher in 0 categories and Kimi K2 Thinking Turbo in 8 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in math, where Kimi K2 Thinking Turbo leads 47.4 to 14.8.
- The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 4.7% for Claude 3 Opus and 83.1% for Kimi K2 Thinking Turbo.
- Kimi K2 Thinking Turbo has downloadable open weights; the other is API-only.

## Snapshot

| | Claude 3 Opus | Kimi K2 Thinking Turbo |
|---|---|---|
| Provider | Anthropic | Moonshot AI |
| Noometry Index | 29.5 | 45.8 |
| Rank | 310 | 70 |
| Context | — | — |
| Input $/M | — | — |
| Output $/M | — | — |
| Weights | Proprietary | Open |

## Coding

- Claude 3 Opus: 32.9 (#267)
- Kimi K2 Thinking Turbo: 38.4 (#178)

| Benchmark | Claude 3 Opus | Kimi K2 Thinking Turbo |
|---|---|---|
| LMArena Coding | 1264 | 1454 |
| LMArena WebDev | — | 1322 |
| WeirdML | 19.2% | — |
| BigCodeBench Instruct | 45.5% | — |
| LiveBench Coding | 38.6% | — |
| BigCodeBench Complete | 57.4% | — |
| HumanEval+ | 77.4% | — |
| MBPP+ | 73.3% | — |

## Agentic & Tool Use

- Claude 3 Opus: 24.6 (#116)
- Kimi K2 Thinking Turbo: —

| Benchmark | Claude 3 Opus | Kimi K2 Thinking Turbo |
|---|---|---|
| Cybench | 10% | — |
| METR Time Horizons | 29.5% | — |

## Reasoning

- Claude 3 Opus: 14.6 (#324)
- Kimi K2 Thinking Turbo: 32.5 (#75)

| Benchmark | Claude 3 Opus | Kimi K2 Thinking Turbo |
|---|---|---|
| Chess Puzzles | 5% | 20% |
| LMArena Hard Prompts | 1245 | 1428 |
| SimpleBench | 23.5% | — |
| EnigmaEval | 0.8% | — |
| LiveBench Reasoning | 40.6% | — |
| DTBench | 61.6% | — |
| LiveBench Data Analysis | 57.9% | — |
| LMCA | 17% | — |
| Epoch Capabilities Index | 126.91 | — |
| ForecastBench | 58.4 | — |
| LiveBench | 49.2% | — |
| WinoGrande | 88.5% | — |

## Math

- Claude 3 Opus: 14.8 (#299)
- Kimi K2 Thinking Turbo: 47.4 (#68)

| Benchmark | Claude 3 Opus | Kimi K2 Thinking Turbo |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 4.7% | 83.1% |
| LMArena Math | 1273 | 1429 |
| LiveBench Math | 43.6% | — |
| MATH Level 5 | 37.5% | — |

## Knowledge

- Claude 3 Opus: 24.5 (#267)
- Kimi K2 Thinking Turbo: 50.9 (#69)

| Benchmark | Claude 3 Opus | Kimi K2 Thinking Turbo |
|---|---|---|
| GPQA Diamond | 47.2% | 84.2% |
| LMArena Expert | 1223 | 1439 |
| SimpleQA Verified | 12.6% | — |
| Confabulations | 22.7% | — |
| MMLU | 84.6% | — |

## Multimodal

- Claude 3 Opus: 27.1 (#116)
- Kimi K2 Thinking Turbo: —

| Benchmark | Claude 3 Opus | Kimi K2 Thinking Turbo |
|---|---|---|
| LMArena Vision | 1023 | — |

## Multilingual

- Claude 3 Opus: 41.4 (#207)
- Kimi K2 Thinking Turbo: 51.4 (#109)

| Benchmark | Claude 3 Opus | Kimi K2 Thinking Turbo |
|---|---|---|
| LMArena Non-English | 1258 | 1398 |
| LMArena Chinese | 1248 | 1456 |
| LMArena French | 1275 | 1425 |
| LMArena German | 1258 | 1390 |
| LMArena Japanese | 1204 | 1357 |
| LMArena Korean | 1187 | 1330 |
| LMArena Russian | 1280 | 1391 |
| LMArena Spanish | 1246 | 1406 |

## Instruction Following

- Claude 3 Opus: 64.1 (#228)
- Kimi K2 Thinking Turbo: 74.0 (#109)

| Benchmark | Claude 3 Opus | Kimi K2 Thinking Turbo |
|---|---|---|
| LMArena Instruction Following | 1248 | 1403 |
| LiveBench Instruction Following | 63.9% | — |

## Long Context

- Claude 3 Opus: 38.2 (#202)
- Kimi K2 Thinking Turbo: 43.2 (#102)

| Benchmark | Claude 3 Opus | Kimi K2 Thinking Turbo |
|---|---|---|
| LMArena Longer Query | 1259 | 1415 |

## Writing & Preference

- Claude 3 Opus: 47.2 (#213)
- Kimi K2 Thinking Turbo: 60.0 (#104)

| Benchmark | Claude 3 Opus | Kimi K2 Thinking Turbo |
|---|---|---|
| LMArena Text | 1262 | 1415 |
| LMArena Creative Writing | 1235 | 1374 |
| LMArena Multi-Turn | 1275 | 1414 |
| LiveBench Language | 50.4% | — |

## FAQ

### Is Claude 3 Opus better than Kimi K2 Thinking Turbo?

Kimi K2 Thinking Turbo is the stronger model overall, scoring 45.8 to 29.5 on the Noometry Index.

### Is Claude 3 Opus or Kimi K2 Thinking Turbo better for coding?

Kimi K2 Thinking Turbo scores higher on coding benchmarks: 38.4 versus 32.9 in the Noometry coding category.

### How many benchmarks do Claude 3 Opus and Kimi K2 Thinking Turbo share?

20 benchmarks have published results for both models. Claude 3 Opus has 46 scored results on Noometry and Kimi K2 Thinking Turbo has 21.