# Kimi K2 (Jul 2025) vs Nova Premier 1.0

> Kimi K2 (Jul 2025) is the stronger model overall, scoring 40.9 to 37.7 on the Noometry Index.

- Canonical page: https://noometry.com/compare/kimi-k2-vs-nova-premier-1-0
- Last updated: 2026-10-10
- Shared benchmarks: 6

## Summary

- They share 6 benchmarks with published results for both. Kimi K2 (Jul 2025) scores higher in 5 categories and Nova Premier 1.0 in 0 categories; 4 gaps are clear of the uncertainty.
- The widest gap is in writing & preference, where Kimi K2 (Jul 2025) leads 62.5 to 51.0.
- The biggest single-benchmark swing is Omni-MATH: 65.4% for Kimi K2 (Jul 2025) and 35% for Nova Premier 1.0.
- Kimi K2 (Jul 2025) is cheaper at $0.57 / $2.30 per million input/output tokens, against $2.50 / $12.50 for Nova Premier 1.0.
- Nova Premier 1.0 accepts more context: 1M tokens versus 262K.
- Kimi K2 (Jul 2025) has downloadable open weights; the other is API-only.

## Snapshot

| | Kimi K2 (Jul 2025) | Nova Premier 1.0 |
|---|---|---|
| Provider | Moonshot AI | Amazon |
| Noometry Index | 40.9 | 37.7 |
| Rank | 134 | 185 |
| Context | 262K | 1M |
| Input $/M | $0.57 | $2.50 |
| Output $/M | $2.30 | $12.50 |
| Weights | Open | Proprietary |

## Coding

- Kimi K2 (Jul 2025): 43.1 (#83)
- Nova Premier 1.0: —

| Benchmark | Kimi K2 (Jul 2025) | Nova Premier 1.0 |
|---|---|---|
| SWE-bench Verified (bash only) | 63.4% | — |
| Aider Polyglot | 59.1% | — |
| GSO | 4.9% | — |
| WeirdML | 42.8% | — |
| LMArena Coding | 1399 | — |
| ALE-Bench | 597.5 | — |

## Agentic & Tool Use

- Kimi K2 (Jul 2025): 32.2 (#59)
- Nova Premier 1.0: —

| Benchmark | Kimi K2 (Jul 2025) | Nova Premier 1.0 |
|---|---|---|
| Terminal-Bench | 35.7% | — |
| Berkeley Function Calling Leaderboard | 59.1% | — |
| METR Time Horizons | 59.2% | — |

## Reasoning

- Kimi K2 (Jul 2025): 22.7 (#173)
- Nova Premier 1.0: 22.3 (#182)

| Benchmark | Kimi K2 (Jul 2025) | Nova Premier 1.0 |
|---|---|---|
| Kagi LLM Benchmark | 64.4% | 44.8% |
| SimpleBench | 26.3% | — |
| LMArena Hard Prompts | 1384 | — |
| Epoch Capabilities Index | 146.02 | — |
| ForecastBench | 60.2 | — |

## Math

- Kimi K2 (Jul 2025): 40.1 (#81)
- Nova Premier 1.0: 31.5 (#194)

| Benchmark | Kimi K2 (Jul 2025) | Nova Premier 1.0 |
|---|---|---|
| Omni-MATH | 65.4% | 35% |
| LMArena Math | 1396 | — |
| FrontierMath (Feb 2025 set) | 21.4% | — |
| FrontierMath Tier 4 (v1) | 0% | — |

## Knowledge

- Kimi K2 (Jul 2025): 36.9 (#153)
- Nova Premier 1.0: 35.4 (#176)

| Benchmark | Kimi K2 (Jul 2025) | Nova Premier 1.0 |
|---|---|---|
| MMLU-Pro | 81.9% | 72.6% |
| GPQA (HELM) | 65.3% | 51.8% |
| Confabulations | 20.4% | — |
| Vectara Hallucination Rate | 17.9% | — |
| LMArena Expert | 1363 | — |

## Multilingual

- Kimi K2 (Jul 2025): 49.8 (#125)
- Nova Premier 1.0: —

| Benchmark | Kimi K2 (Jul 2025) | Nova Premier 1.0 |
|---|---|---|
| LMArena Non-English | 1372 | — |
| LMArena Chinese | 1416 | — |
| LMArena French | 1379 | — |
| LMArena German | 1386 | — |
| LMArena Japanese | 1349 | — |
| LMArena Korean | 1324 | — |
| LMArena Russian | 1384 | — |
| LMArena Spanish | 1383 | — |

## Instruction Following

- Kimi K2 (Jul 2025): 71.3 (#151)
- Nova Premier 1.0: 66.9 (#201)

| Benchmark | Kimi K2 (Jul 2025) | Nova Premier 1.0 |
|---|---|---|
| IFEval | 85% | 80.3% |
| LMArena Instruction Following | 1347 | — |

## Long Context

- Kimi K2 (Jul 2025): 41.2 (#140)
- Nova Premier 1.0: —

| Benchmark | Kimi K2 (Jul 2025) | Nova Premier 1.0 |
|---|---|---|
| Fiction.LiveBench | 66.7% | — |
| CL-bench | 17.6% | — |
| LMArena Longer Query | 1353 | — |

## Writing & Preference

- Kimi K2 (Jul 2025): 62.5 (#76)
- Nova Premier 1.0: 51.0 (#174)

| Benchmark | Kimi K2 (Jul 2025) | Nova Premier 1.0 |
|---|---|---|
| WildBench | 86.2% | 78.8% |
| LMArena Text | 1380 | — |
| LMArena Creative Writing | 1349 | — |
| Short-Story Creative Writing | 85.6% | — |
| EQ-Bench Creative Writing | 1666 | — |
| LMArena Multi-Turn | 1371 | — |

## FAQ

### Is Kimi K2 (Jul 2025) better than Nova Premier 1.0?

Kimi K2 (Jul 2025) is the stronger model overall, scoring 40.9 to 37.7 on the Noometry Index.

### Which is cheaper, Kimi K2 (Jul 2025) or Nova Premier 1.0?

Kimi K2 (Jul 2025) is cheaper. It lists at $0.57 per million input tokens and $2.30 per million output tokens; Nova Premier 1.0 lists at $2.50 and $12.50.

### Which has the bigger context window?

Nova Premier 1.0 does, with 1M tokens against 262K.

### How many benchmarks do Kimi K2 (Jul 2025) and Nova Premier 1.0 share?

6 benchmarks have published results for both models. Kimi K2 (Jul 2025) has 42 scored results on Noometry and Nova Premier 1.0 has 6.