Model comparison
Claude 2.1 vs Kimi K2 Thinking Turbo
Kimi K2 Thinking Turbo is the stronger model overall, scoring 45.4 to 24.9 on the Noometry Index.
Last verified . 2 shared benchmarks.
Summary
- They share 2 benchmarks with published results for both. Claude 2.1 scores higher in 0 categories and Kimi K2 Thinking Turbo in 4 categories; 4 gaps are clear of the uncertainty.
- The widest gap is in math, where Kimi K2 Thinking Turbo leads 45.5 to 9.6.
- The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 1.9% for Claude 2.1 and 83.1% for Kimi K2 Thinking Turbo.
- Kimi K2 Thinking Turbo has downloadable open weights; the other is API-only.
Side by side
| Claude 2.1 | Kimi K2 Thinking Turbo | |
|---|---|---|
| Provider | Anthropic | Moonshot AI |
| Noometry Index | 24.9 | 45.4 |
| Released | 2023-11-21 | 2025-11-06 |
| Weights | Proprietary | Open |
| Context window | — | — |
| Max output | — | — |
| Input $ / M tokens | — | — |
| Output $ / M tokens | — | — |
| Results tracked | 7 | 21 |
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Category by category
Coding Kimi K2 Thinking Turbo leads
Claude 2.1: 25.8 (#322), Kimi K2 Thinking Turbo: 38.1 (#166)
| Benchmark | Claude 2.1 | Kimi K2 Thinking Turbo |
|---|---|---|
| LMArena WebDev | — | 1322 |
| WeirdML | 7.1% | — |
| LMArena Coding | — | 1454 |
Reasoning Kimi K2 Thinking Turbo leads
Claude 2.1: 20.6 (#216), Kimi K2 Thinking Turbo: 31.4 (#72)
| Benchmark | Claude 2.1 | Kimi K2 Thinking Turbo |
|---|---|---|
| Chess Puzzles | — | 20% |
| LMArena Hard Prompts | — | 1428 |
| DTBench | 51% | — |
| Epoch Capabilities Index | 119.22 | — |
| ForecastBench | 54.2 | — |
Math Kimi K2 Thinking Turbo leads
Claude 2.1: 9.6 (#309), Kimi K2 Thinking Turbo: 45.5 (#62)
| Benchmark | Claude 2.1 | Kimi K2 Thinking Turbo |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 1.9% | 83.1% |
| LMArena Math | — | 1429 |
Knowledge Kimi K2 Thinking Turbo leads
Claude 2.1: 15.5 (#287), Kimi K2 Thinking Turbo: 50.9 (#64)
| Benchmark | Claude 2.1 | Kimi K2 Thinking Turbo |
|---|---|---|
| GPQA Diamond | 33% | 84.2% |
| LMArena Expert | — | 1439 |
| MMLU | 73.5% | — |
Multilingual Not comparable
Claude 2.1: —, Kimi K2 Thinking Turbo: 51.6 (#104)
| Benchmark | Claude 2.1 | Kimi K2 Thinking Turbo |
|---|---|---|
| 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
Claude 2.1: —, Kimi K2 Thinking Turbo: 74.2 (#103)
| Benchmark | Claude 2.1 | Kimi K2 Thinking Turbo |
|---|---|---|
| LMArena Instruction Following | — | 1403 |
Long Context Not comparable
Claude 2.1: —, Kimi K2 Thinking Turbo: 43.2 (#99)
| Benchmark | Claude 2.1 | Kimi K2 Thinking Turbo |
|---|---|---|
| LMArena Longer Query | — | 1415 |
Writing & Preference Not comparable
Claude 2.1: —, Kimi K2 Thinking Turbo: 60.2 (#99)
| Benchmark | Claude 2.1 | Kimi K2 Thinking Turbo |
|---|---|---|
| LMArena Text | — | 1415 |
| LMArena Creative Writing | — | 1373 |
| LMArena Multi-Turn | — | 1414 |
Frequently asked questions
Is Claude 2.1 better than Kimi K2 Thinking Turbo?
Kimi K2 Thinking Turbo is the stronger model overall, scoring 45.4 to 24.9 on the Noometry Index.
Is Claude 2.1 or Kimi K2 Thinking Turbo better for coding?
Kimi K2 Thinking Turbo scores higher on coding benchmarks: 38.1 versus 25.8 in the Noometry coding category.
How many benchmarks do Claude 2.1 and Kimi K2 Thinking Turbo share?
2 benchmarks have published results for both models. Claude 2.1 has 7 scored results on Noometry and Kimi K2 Thinking Turbo has 21.