Model comparison
Kimi K2 (Jul 2025) vs Nova 2.0 Pro Preview
Kimi K2 (Jul 2025) is the stronger model overall, scoring 41.2 to 33.4 on the Noometry Index.
Last verified . 0 shared benchmarks.
Summary
- The widest gap is in agentic & tool use, where Kimi K2 (Jul 2025) leads 32.4 to 21.9.
- Kimi K2 (Jul 2025) has downloadable open weights; the other is API-only.
Side by side
| Kimi K2 (Jul 2025) | Nova 2.0 Pro Preview | |
|---|---|---|
| Provider | Moonshot AI | Amazon |
| Noometry Index | 41.2 | 33.4 |
| Released | 2025-07-12 | 2025-12-02 |
| Weights | Open | Proprietary |
| Context window | 262K | — |
| Max output | 262K | — |
| Input $ / M tokens | $0.57 | — |
| Output $ / M tokens | $2.30 | — |
| Results tracked | 42 | 3 |
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Category by category
Coding Kimi K2 (Jul 2025) leads
Kimi K2 (Jul 2025): 42.4 (#102), Nova 2.0 Pro Preview: 40.8 (#133)
| Benchmark | Kimi K2 (Jul 2025) | Nova 2.0 Pro Preview |
|---|---|---|
| SWE-bench Verified (bash only) | 63.4% | — |
| Aider Polyglot | 59.1% | — |
| SciCode | — | 42.7% |
| GSO | 4.9% | — |
| WeirdML | 42.8% | — |
| LMArena Coding | 1399 | — |
| ALE-Bench | 597.5 | — |
Agentic & Tool Use Kimi K2 (Jul 2025) leads
Kimi K2 (Jul 2025): 32.4 (#64), Nova 2.0 Pro Preview: 21.9 (#136)
| Benchmark | Kimi K2 (Jul 2025) | Nova 2.0 Pro Preview |
|---|---|---|
| Terminal-Bench | 35.7% | — |
| Berkeley Function Calling Leaderboard | 59.1% | — |
| GDP.pdf | — | 2% |
| METR Time Horizons | 59.2% | — |
Reasoning Too close to call
Kimi K2 (Jul 2025): 23.3 (#179), Nova 2.0 Pro Preview: 22.4 (#194)
| Benchmark | Kimi K2 (Jul 2025) | Nova 2.0 Pro Preview |
|---|---|---|
| SimpleBench | 26.3% | — |
| Kagi LLM Benchmark | 64.4% | — |
| CritPt | — | 0% |
| LMArena Hard Prompts | 1384 | — |
| Epoch Capabilities Index | 146.01 | — |
| ForecastBench | 60.2 | — |
Math Not comparable
Kimi K2 (Jul 2025): 42.7 (#83), Nova 2.0 Pro Preview: —
| Benchmark | Kimi K2 (Jul 2025) | Nova 2.0 Pro Preview |
|---|---|---|
| Omni-MATH | 65.4% | — |
| LMArena Math | 1397 | — |
| FrontierMath (Feb 2025 set) | 21.4% | — |
| FrontierMath Tier 4 (v1) | 0% | — |
Knowledge Not comparable
Kimi K2 (Jul 2025): 37.3 (#157), Nova 2.0 Pro Preview: —
| Benchmark | Kimi K2 (Jul 2025) | Nova 2.0 Pro Preview |
|---|---|---|
| MMLU-Pro | 81.9% | — |
| Confabulations | 20.4% | — |
| Vectara Hallucination Rate | 17.9% | — |
| GPQA (HELM) | 65.3% | — |
| LMArena Expert | 1365 | — |
Multilingual Not comparable
Kimi K2 (Jul 2025): 49.6 (#130), Nova 2.0 Pro Preview: —
| Benchmark | Kimi K2 (Jul 2025) | Nova 2.0 Pro Preview |
|---|---|---|
| LMArena Non-English | 1372 | — |
| LMArena Chinese | 1415 | — |
| LMArena French | 1379 | — |
| LMArena German | 1387 | — |
| LMArena Japanese | 1349 | — |
| LMArena Korean | 1325 | — |
| LMArena Russian | 1385 | — |
| LMArena Spanish | 1386 | — |
Instruction Following Not comparable
Kimi K2 (Jul 2025): 71.1 (#156), Nova 2.0 Pro Preview: —
| Benchmark | Kimi K2 (Jul 2025) | Nova 2.0 Pro Preview |
|---|---|---|
| IFEval | 85% | — |
| LMArena Instruction Following | 1348 | — |
Long Context Not comparable
Kimi K2 (Jul 2025): 41.2 (#145), Nova 2.0 Pro Preview: —
| Benchmark | Kimi K2 (Jul 2025) | Nova 2.0 Pro Preview |
|---|---|---|
| Fiction.LiveBench | 66.7% | — |
| CL-bench | 17.6% | — |
| LMArena Longer Query | 1353 | — |
Writing & Preference Not comparable
Kimi K2 (Jul 2025): 62.3 (#78), Nova 2.0 Pro Preview: —
| Benchmark | Kimi K2 (Jul 2025) | Nova 2.0 Pro Preview |
|---|---|---|
| LMArena Text | 1380 | — |
| LMArena Creative Writing | 1350 | — |
| Short-Story Creative Writing | 85.6% | — |
| EQ-Bench Creative Writing | 1666 | — |
| WildBench | 86.2% | — |
| LMArena Multi-Turn | 1371 | — |
Frequently asked questions
Is Kimi K2 (Jul 2025) better than Nova 2.0 Pro Preview?
Kimi K2 (Jul 2025) is the stronger model overall, scoring 41.2 to 33.4 on the Noometry Index.
Is Kimi K2 (Jul 2025) or Nova 2.0 Pro Preview better for coding?
Kimi K2 (Jul 2025) scores higher on coding benchmarks: 42.4 versus 40.8 in the Noometry coding category.
How many benchmarks do Kimi K2 (Jul 2025) and Nova 2.0 Pro Preview share?
0 benchmarks have published results for both models. Kimi K2 (Jul 2025) has 42 scored results on Noometry and Nova 2.0 Pro Preview has 3.