# Hy3 vs Kimi K2 (Jul 2025)

> Hy3 is the stronger model overall, scoring 44.2 to 41.2 on the Noometry Index.

- Canonical page: https://noometry.com/compare/hy3-vs-kimi-k2
- Last updated: 2026-10-11
- Shared benchmarks: 17

## Summary

- They share 17 benchmarks with published results for both. Hy3 scores higher in 6 categories and Kimi K2 (Jul 2025) in 2 categories; 7 gaps are clear of the uncertainty.
- The widest gap is in coding, where Hy3 leads 46.8 to 42.4.
- Hy3 is cheaper at $0.13 / $0.53 per million input/output tokens, against $0.57 / $2.30 for Kimi K2 (Jul 2025).

## Snapshot

| | Hy3 | Kimi K2 (Jul 2025) |
|---|---|---|
| Provider | Tencent | Moonshot AI |
| Noometry Index | 44.2 | 41.2 |
| Rank | 79 | 140 |
| Context | 262K | 262K |
| Input $/M | $0.13 | $0.57 |
| Output $/M | $0.53 | $2.30 |
| Weights | Open | Open |

## Coding

- Hy3: 46.8 (#63)
- Kimi K2 (Jul 2025): 42.4 (#102)

| Benchmark | Hy3 | Kimi K2 (Jul 2025) |
|---|---|---|
| LMArena Coding | 1464 | 1399 |
| SWE-bench Verified (bash only) | — | 63.4% |
| Aider Polyglot | — | 59.1% |
| LMArena WebDev | 1508 | — |
| GSO | — | 4.9% |
| WeirdML | — | 42.8% |
| ALE-Bench | — | 597.5 |

## Agentic & Tool Use

- Hy3: —
- Kimi K2 (Jul 2025): 32.4 (#64)

| Benchmark | Hy3 | Kimi K2 (Jul 2025) |
|---|---|---|
| Terminal-Bench | — | 35.7% |
| Berkeley Function Calling Leaderboard | — | 59.1% |
| METR Time Horizons | — | 59.2% |

## Reasoning

- Hy3: 26.1 (#136)
- Kimi K2 (Jul 2025): 23.3 (#179)

| Benchmark | Hy3 | Kimi K2 (Jul 2025) |
|---|---|---|
| LMArena Hard Prompts | 1447 | 1384 |
| SimpleBench | — | 26.3% |
| Kagi LLM Benchmark | — | 64.4% |
| NYT Connections (extended) | 41.2% | — |
| Epoch Capabilities Index | — | 146.01 |
| ForecastBench | — | 60.2 |

## Math

- Hy3: 40.1 (#93)
- Kimi K2 (Jul 2025): 42.7 (#83)

| Benchmark | Hy3 | Kimi K2 (Jul 2025) |
|---|---|---|
| LMArena Math | 1475 | 1397 |
| Omni-MATH | — | 65.4% |
| FrontierMath (Feb 2025 set) | — | 21.4% |
| FrontierMath Tier 4 (v1) | — | 0% |

## Knowledge

- Hy3: 40.8 (#114)
- Kimi K2 (Jul 2025): 37.3 (#157)

| Benchmark | Hy3 | Kimi K2 (Jul 2025) |
|---|---|---|
| LMArena Expert | 1460 | 1365 |
| MMLU-Pro | — | 81.9% |
| Confabulations | — | 20.4% |
| Vectara Hallucination Rate | — | 17.9% |
| GPQA (HELM) | — | 65.3% |

## Multilingual

- Hy3: 53.5 (#65)
- Kimi K2 (Jul 2025): 49.6 (#130)

| Benchmark | Hy3 | Kimi K2 (Jul 2025) |
|---|---|---|
| LMArena Non-English | 1426 | 1372 |
| LMArena Chinese | 1493 | 1415 |
| LMArena French | 1461 | 1379 |
| LMArena German | 1439 | 1387 |
| LMArena Japanese | 1392 | 1349 |
| LMArena Korean | 1395 | 1325 |
| LMArena Russian | 1432 | 1385 |
| LMArena Spanish | 1456 | 1386 |

## Instruction Following

- Hy3: 75.1 (#70)
- Kimi K2 (Jul 2025): 71.1 (#156)

| Benchmark | Hy3 | Kimi K2 (Jul 2025) |
|---|---|---|
| LMArena Instruction Following | 1426 | 1348 |
| IFEval | — | 85% |

## Long Context

- Hy3: 44.1 (#75)
- Kimi K2 (Jul 2025): 41.2 (#145)

| Benchmark | Hy3 | Kimi K2 (Jul 2025) |
|---|---|---|
| LMArena Longer Query | 1442 | 1353 |
| Fiction.LiveBench | — | 66.7% |
| CL-bench | — | 17.6% |

## Writing & Preference

- Hy3: 62.2 (#81)
- Kimi K2 (Jul 2025): 62.3 (#78)

| Benchmark | Hy3 | Kimi K2 (Jul 2025) |
|---|---|---|
| LMArena Text | 1439 | 1380 |
| LMArena Creative Writing | 1402 | 1350 |
| LMArena Multi-Turn | 1436 | 1371 |
| Short-Story Creative Writing | — | 85.6% |
| EQ-Bench Creative Writing | — | 1666 |
| WildBench | — | 86.2% |

## FAQ

### Is Hy3 better than Kimi K2 (Jul 2025)?

Hy3 is the stronger model overall, scoring 44.2 to 41.2 on the Noometry Index.

### Which is cheaper, Hy3 or Kimi K2 (Jul 2025)?

Hy3 is cheaper. It lists at $0.13 per million input tokens and $0.53 per million output tokens; Kimi K2 (Jul 2025) lists at $0.57 and $2.30.

### Is Hy3 or Kimi K2 (Jul 2025) better for coding?

Hy3 scores higher on coding benchmarks: 46.8 versus 42.4 in the Noometry coding category.

### Which has the bigger context window?

Both accept 262K tokens.

### How many benchmarks do Hy3 and Kimi K2 (Jul 2025) share?

17 benchmarks have published results for both models. Hy3 has 19 scored results on Noometry and Kimi K2 (Jul 2025) has 42.