Model comparison
Grok-2 (Dec 2024) vs Kimi K2 Thinking Turbo
Kimi K2 Thinking Turbo is the stronger model overall, scoring 45.8 to 33.7 on the Noometry Index.
Last verified . 19 shared benchmarks.
Summary
- They share 19 benchmarks with published results for both. Grok-2 (Dec 2024) 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 20.8.
- The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 11.5% for Grok-2 (Dec 2024) and 83.1% for Kimi K2 Thinking Turbo.
- Kimi K2 Thinking Turbo has downloadable open weights; the other is API-only.
Side by side
| Grok-2 (Dec 2024) | Kimi K2 Thinking Turbo | |
|---|---|---|
| Provider | xAI | Moonshot AI |
| Noometry Index | 33.7 | 45.8 |
| Released | 2024-08-13 | 2025-11-06 |
| Weights | Proprietary | Open |
| Context window | — | — |
| Max output | — | — |
| Input $ / M tokens | — | — |
| Output $ / M tokens | — | — |
| Results tracked | 34 | 21 |
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Category by category
Coding Kimi K2 Thinking Turbo leads
Grok-2 (Dec 2024): 33.3 (#258), Kimi K2 Thinking Turbo: 38.4 (#178)
| Benchmark | Grok-2 (Dec 2024) | Kimi K2 Thinking Turbo |
|---|---|---|
| LMArena Coding | 1287 | 1454 |
| LMArena WebDev | — | 1322 |
| WeirdML | 22.2% | — |
| LiveBench Coding | 46.4% | — |
Reasoning Kimi K2 Thinking Turbo leads
Grok-2 (Dec 2024): 16.9 (#299), Kimi K2 Thinking Turbo: 32.5 (#75)
| Benchmark | Grok-2 (Dec 2024) | Kimi K2 Thinking Turbo |
|---|---|---|
| LMArena Hard Prompts | 1272 | 1428 |
| SimpleBench | 22.7% | — |
| Chess Puzzles | — | 20% |
| LiveBench Reasoning | 54.8% | — |
| DTBench | 65.2% | — |
| LiveBench Data Analysis | 54.5% | — |
| Epoch Capabilities Index | 130.48 | — |
| LiveBench | 54.3% | — |
Math Kimi K2 Thinking Turbo leads
Grok-2 (Dec 2024): 20.8 (#284), Kimi K2 Thinking Turbo: 47.4 (#68)
| Benchmark | Grok-2 (Dec 2024) | Kimi K2 Thinking Turbo |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 11.5% | 83.1% |
| LMArena Math | 1283 | 1429 |
| LiveBench Math | 54.9% | — |
| MATH Level 5 | 63.5% | — |
| FrontierMath (Feb 2025 set) | 0.7% | — |
Knowledge Kimi K2 Thinking Turbo leads
Grok-2 (Dec 2024): 29.8 (#233), Kimi K2 Thinking Turbo: 50.9 (#69)
| Benchmark | Grok-2 (Dec 2024) | Kimi K2 Thinking Turbo |
|---|---|---|
| GPQA Diamond | 53.8% | 84.2% |
| LMArena Expert | 1254 | 1439 |
| Confabulations | 20.1% | — |
Multilingual Kimi K2 Thinking Turbo leads
Grok-2 (Dec 2024): 43.1 (#188), Kimi K2 Thinking Turbo: 51.4 (#109)
| Benchmark | Grok-2 (Dec 2024) | Kimi K2 Thinking Turbo |
|---|---|---|
| LMArena Non-English | 1282 | 1398 |
| LMArena Chinese | 1289 | 1456 |
| LMArena French | 1318 | 1425 |
| LMArena German | 1287 | 1390 |
| LMArena Japanese | 1244 | 1357 |
| LMArena Korean | 1237 | 1330 |
| LMArena Russian | 1286 | 1391 |
| LMArena Spanish | 1281 | 1406 |
Instruction Following Kimi K2 Thinking Turbo leads
Grok-2 (Dec 2024): 66.9 (#202), Kimi K2 Thinking Turbo: 74.0 (#109)
| Benchmark | Grok-2 (Dec 2024) | Kimi K2 Thinking Turbo |
|---|---|---|
| LMArena Instruction Following | 1270 | 1403 |
| LiveBench Instruction Following | 69.6% | — |
Long Context Kimi K2 Thinking Turbo leads
Grok-2 (Dec 2024): 38.8 (#190), Kimi K2 Thinking Turbo: 43.2 (#102)
| Benchmark | Grok-2 (Dec 2024) | Kimi K2 Thinking Turbo |
|---|---|---|
| LMArena Longer Query | 1276 | 1415 |
Writing & Preference Kimi K2 Thinking Turbo leads
Grok-2 (Dec 2024): 48.6 (#198), Kimi K2 Thinking Turbo: 60.0 (#104)
| Benchmark | Grok-2 (Dec 2024) | Kimi K2 Thinking Turbo |
|---|---|---|
| LMArena Text | 1305 | 1415 |
| LMArena Creative Writing | 1284 | 1374 |
| LMArena Multi-Turn | 1290 | 1414 |
| Short-Story Creative Writing | 63.6% | — |
| LiveBench Language | 45.6% | — |
Frequently asked questions
Is Grok-2 (Dec 2024) better than Kimi K2 Thinking Turbo?
Kimi K2 Thinking Turbo is the stronger model overall, scoring 45.8 to 33.7 on the Noometry Index.
Is Grok-2 (Dec 2024) or Kimi K2 Thinking Turbo better for coding?
Kimi K2 Thinking Turbo scores higher on coding benchmarks: 38.4 versus 33.3 in the Noometry coding category.
How many benchmarks do Grok-2 (Dec 2024) and Kimi K2 Thinking Turbo share?
19 benchmarks have published results for both models. Grok-2 (Dec 2024) has 34 scored results on Noometry and Kimi K2 Thinking Turbo has 21.