Model comparison
Kimi K2.5 vs Nova 2.0 Pro Preview
Kimi K2.5 is the stronger model overall, scoring 48.1 to 33.4 on the Noometry Index.
Last verified . 2 shared benchmarks.
Summary
- They share 2 benchmarks with published results for both. Kimi K2.5 scores higher in 3 categories and Nova 2.0 Pro Preview in 0 categories; 3 gaps are clear of the uncertainty.
- The widest gap is in agentic & tool use, where Kimi K2.5 leads 34.2 to 21.9.
- The biggest single-benchmark swing is SciCode: 49% for Kimi K2.5 and 42.7% for Nova 2.0 Pro Preview.
- Kimi K2.5 has downloadable open weights; the other is API-only.
Side by side
| Kimi K2.5 | Nova 2.0 Pro Preview | |
|---|---|---|
| Provider | Moonshot AI | Amazon |
| Noometry Index | 48.1 | 33.4 |
| Released | 2026-01-27 | 2025-12-02 |
| Weights | Open | Proprietary |
| Context window | 262K | — |
| Max output | 262K | — |
| Input $ / M tokens | $0.45 | — |
| Output $ / M tokens | $2.25 | — |
| Results tracked | 51 | 3 |
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Category by category
Coding Kimi K2.5 leads
Kimi K2.5: 48.8 (#53), Nova 2.0 Pro Preview: 40.8 (#133)
| Benchmark | Kimi K2.5 | Nova 2.0 Pro Preview |
|---|---|---|
| SciCode | 49% | 42.7% |
| SWE-bench Verified | 73.8% | — |
| SWE-bench Verified (bash only) | 70.8% | — |
| LMArena WebDev | 1437 | — |
| SWE-bench Multilingual | 67.3% | — |
| WeirdML | 45.6% | — |
| LMArena Coding | 1474 | — |
| ALE-Bench | 821.65 | — |
Agentic & Tool Use Kimi K2.5 leads
Kimi K2.5: 34.2 (#48), Nova 2.0 Pro Preview: 21.9 (#136)
| Benchmark | Kimi K2.5 | Nova 2.0 Pro Preview |
|---|---|---|
| Terminal-Bench | 43.2% | — |
| OSWorld | 63.3% | — |
| GDP.pdf | — | 2% |
| Vending-Bench 2 | 1,198 | — |
Reasoning Kimi K2.5 leads
Kimi K2.5: 31.2 (#80), Nova 2.0 Pro Preview: 22.4 (#194)
| Benchmark | Kimi K2.5 | Nova 2.0 Pro Preview |
|---|---|---|
| CritPt | 3.1% | 0% |
| ARC-AGI-2 | 11.8% | — |
| SimpleBench | 46.8% | — |
| Kagi LLM Benchmark | 78.5% | — |
| NYT Connections (extended) | 69.9% | — |
| ARC-AGI-1 | 65.3% | — |
| Chess Puzzles | 12% | — |
| EnigmaEval | 3.4% | — |
| Thematic Generalization | 69.4% | — |
| LMArena Hard Prompts | 1453 | — |
| Epoch Capabilities Index | 148.03 | — |
Math Not comparable
Kimi K2.5: 51.8 (#53), Nova 2.0 Pro Preview: —
| Benchmark | Kimi K2.5 | Nova 2.0 Pro Preview |
|---|---|---|
| MathArena Final-Answer Competitions | 62.3% | — |
| OTIS Mock AIME 2024-2025 | 92.2% | — |
| LMArena Math | 1470 | — |
| FrontierMath (Feb 2025 set) | 27.9% | — |
| FrontierMath Tier 4 (v1) | 4.2% | — |
Knowledge Not comparable
Kimi K2.5: 53.6 (#56), Nova 2.0 Pro Preview: —
| Benchmark | Kimi K2.5 | Nova 2.0 Pro Preview |
|---|---|---|
| GPQA Diamond | 87.6% | — |
| Humanity's Last Exam | 24.4% | — |
| SimpleQA Verified | 34.3% | — |
| Vectara Hallucination Rate | 14.2% | — |
| LMArena Expert | 1466 | — |
Multimodal Not comparable
Kimi K2.5: 41.1 (#39), Nova 2.0 Pro Preview: —
| Benchmark | Kimi K2.5 | Nova 2.0 Pro Preview |
|---|---|---|
| LMArena Vision | 1269 | — |
| LMArena Document | 1430 | — |
Multilingual Not comparable
Kimi K2.5: 53.9 (#53), Nova 2.0 Pro Preview: —
| Benchmark | Kimi K2.5 | Nova 2.0 Pro Preview |
|---|---|---|
| LMArena Non-English | 1433 | — |
| LMArena Chinese | 1495 | — |
| LMArena French | 1454 | — |
| LMArena German | 1441 | — |
| LMArena Japanese | 1421 | — |
| LMArena Korean | 1410 | — |
| LMArena Russian | 1435 | — |
| LMArena Spanish | 1450 | — |
Instruction Following Not comparable
Kimi K2.5: 75.3 (#64), Nova 2.0 Pro Preview: —
| Benchmark | Kimi K2.5 | Nova 2.0 Pro Preview |
|---|---|---|
| LMArena Instruction Following | 1431 | — |
Long Context Not comparable
Kimi K2.5: 52.1 (#7), Nova 2.0 Pro Preview: —
| Benchmark | Kimi K2.5 | Nova 2.0 Pro Preview |
|---|---|---|
| Fiction.LiveBench | 86.1% | — |
| CL-bench | 19.3% | — |
| CL-bench Life | 13.2% | — |
| LMArena Longer Query | 1445 | — |
Writing & Preference Not comparable
Kimi K2.5: 65.1 (#53), Nova 2.0 Pro Preview: —
| Benchmark | Kimi K2.5 | Nova 2.0 Pro Preview |
|---|---|---|
| LMArena Text | 1445 | — |
| LMArena Creative Writing | 1423 | — |
| EQ-Bench Creative Writing | 1579 | — |
| LMArena Multi-Turn | 1444 | — |
Frequently asked questions
Is Kimi K2.5 better than Nova 2.0 Pro Preview?
Kimi K2.5 is the stronger model overall, scoring 48.1 to 33.4 on the Noometry Index.
Is Kimi K2.5 or Nova 2.0 Pro Preview better for coding?
Kimi K2.5 scores higher on coding benchmarks: 48.8 versus 40.8 in the Noometry coding category.
How many benchmarks do Kimi K2.5 and Nova 2.0 Pro Preview share?
2 benchmarks have published results for both models. Kimi K2.5 has 51 scored results on Noometry and Nova 2.0 Pro Preview has 3.