Model comparison
Hy4 preview vs Kimi K2 Thinking Turbo
Hy4 preview and Kimi K2 Thinking Turbo score almost the same on the Noometry Index (45.3 vs 45.8), so choose on price, context window or the category you care about most.
Last verified . 1 shared benchmarks.
TencentSummary
- They share 1 benchmark with published results for both. Hy4 preview scores higher in 2 categories and Kimi K2 Thinking Turbo in 1 category; 2 gaps are clear of the uncertainty.
- The widest gap is in coding, where Hy4 preview leads 51.6 to 38.4.
Side by side
| Hy4 preview | Kimi K2 Thinking Turbo | |
|---|---|---|
| Provider | Tencent | Moonshot AI |
| Noometry Index | 45.3 | 45.8 |
| Released | 2026-08-28 | 2025-11-06 |
| Weights | Open | Open |
| Context window | 1.05M | — |
| Max output | 64K | — |
| Input $ / M tokens | $0.75 | — |
| Output $ / M tokens | $2.25 | — |
| Results tracked | 3 | 21 |
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Category by category
Coding Hy4 preview leads
Hy4 preview: 51.6 (#38), Kimi K2 Thinking Turbo: 38.4 (#178)
| Benchmark | Hy4 preview | Kimi K2 Thinking Turbo |
|---|---|---|
| LMArena WebDev | 1632 | 1322 |
| LMArena Coding | — | 1454 |
Reasoning Too close to call
Hy4 preview: 31.9 (#79), Kimi K2 Thinking Turbo: 32.5 (#75)
| Benchmark | Hy4 preview | Kimi K2 Thinking Turbo |
|---|---|---|
| NYT Connections (extended) | 68.2% | — |
| Chess Puzzles | — | 20% |
| LMArena Hard Prompts | — | 1428 |
Math Hy4 preview leads
Hy4 preview: 55.7 (#42), Kimi K2 Thinking Turbo: 47.4 (#68)
| Benchmark | Hy4 preview | Kimi K2 Thinking Turbo |
|---|---|---|
| OTIS Mock AIME 2024-2025 | — | 83.1% |
| ProofBench | 75% | — |
| LMArena Math | — | 1429 |
Knowledge Not comparable
Hy4 preview: —, Kimi K2 Thinking Turbo: 50.9 (#69)
| Benchmark | Hy4 preview | Kimi K2 Thinking Turbo |
|---|---|---|
| GPQA Diamond | — | 84.2% |
| LMArena Expert | — | 1439 |
Multilingual Not comparable
Hy4 preview: —, Kimi K2 Thinking Turbo: 51.4 (#109)
| Benchmark | Hy4 preview | Kimi K2 Thinking Turbo |
|---|---|---|
| LMArena Non-English | — | 1398 |
| LMArena Chinese | — | 1456 |
| LMArena French | — | 1425 |
| LMArena German | — | 1390 |
| LMArena Japanese | — | 1357 |
| LMArena Korean | — | 1330 |
| LMArena Russian | — | 1391 |
| LMArena Spanish | — | 1406 |
Instruction Following Not comparable
Hy4 preview: —, Kimi K2 Thinking Turbo: 74.0 (#109)
| Benchmark | Hy4 preview | Kimi K2 Thinking Turbo |
|---|---|---|
| LMArena Instruction Following | — | 1403 |
Long Context Not comparable
Hy4 preview: —, Kimi K2 Thinking Turbo: 43.2 (#102)
| Benchmark | Hy4 preview | Kimi K2 Thinking Turbo |
|---|---|---|
| LMArena Longer Query | — | 1415 |
Writing & Preference Not comparable
Hy4 preview: —, Kimi K2 Thinking Turbo: 60.0 (#104)
| Benchmark | Hy4 preview | Kimi K2 Thinking Turbo |
|---|---|---|
| LMArena Text | — | 1415 |
| LMArena Creative Writing | — | 1374 |
| LMArena Multi-Turn | — | 1414 |
Frequently asked questions
Is Hy4 preview better than Kimi K2 Thinking Turbo?
Hy4 preview and Kimi K2 Thinking Turbo score almost the same on the Noometry Index (45.3 vs 45.8), so choose on price, context window or the category you care about most.
Is Hy4 preview or Kimi K2 Thinking Turbo better for coding?
Hy4 preview scores higher on coding benchmarks: 51.6 versus 38.4 in the Noometry coding category.
How many benchmarks do Hy4 preview and Kimi K2 Thinking Turbo share?
1 benchmark has published results for both models. Hy4 preview has 3 scored results on Noometry and Kimi K2 Thinking Turbo has 21.