Model comparison
Hy4 preview vs MiMo-V2.5-Pro
Hy4 preview and MiMo-V2.5-Pro score almost the same on the Noometry Index (45.3 vs 45.2), so choose on price, context window or the category you care about most.
Last verified . 3 shared benchmarks.
TencentSummary
- They share 3 benchmarks with published results for both. Hy4 preview scores higher in 3 categories and MiMo-V2.5-Pro in 0 categories; 3 gaps are clear of the uncertainty.
- The widest gap is in math, where Hy4 preview leads 55.7 to 40.0.
- The biggest single-benchmark swing is ProofBench: 75% for Hy4 preview and 22% for MiMo-V2.5-Pro.
- MiMo-V2.5-Pro is cheaper at $0.43 / $0.87 per million input/output tokens, against $0.75 / $2.25 for Hy4 preview.
Side by side
| Hy4 preview | MiMo-V2.5-Pro | |
|---|---|---|
| Provider | Tencent | Xiaomi |
| Noometry Index | 45.3 | 45.2 |
| Released | 2026-08-28 | 2026-04-22 |
| Weights | Open | Open |
| Context window | 1.05M | 1.05M |
| Max output | 64K | 131K |
| Input $ / M tokens | $0.75 | $0.43 |
| Output $ / M tokens | $2.25 | $0.87 |
| Results tracked | 3 | 27 |
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Category by category
Coding Hy4 preview leads
Hy4 preview: 51.6 (#38), MiMo-V2.5-Pro: 47.4 (#60)
| Benchmark | Hy4 preview | MiMo-V2.5-Pro |
|---|---|---|
| LMArena WebDev | 1632 | 1479 |
| SciCode | — | 50.2% |
| LMArena Coding | — | 1503 |
| ALE-Bench | — | 899.8 |
Reasoning Hy4 preview leads
Hy4 preview: 31.9 (#79), MiMo-V2.5-Pro: 26.8 (#130)
| Benchmark | Hy4 preview | MiMo-V2.5-Pro |
|---|---|---|
| NYT Connections (extended) | 68.2% | 34.4% |
| CritPt | — | 4% |
| LMArena Hard Prompts | — | 1488 |
| DTBench | — | 84.5% |
| LMCA | — | 29.5% |
Math Hy4 preview leads
Hy4 preview: 55.7 (#42), MiMo-V2.5-Pro: 40.0 (#96)
| Benchmark | Hy4 preview | MiMo-V2.5-Pro |
|---|---|---|
| ProofBench | 75% | 22% |
| LMArena Math | — | 1481 |
Knowledge Not comparable
Hy4 preview: —, MiMo-V2.5-Pro: 42.2 (#98)
| Benchmark | Hy4 preview | MiMo-V2.5-Pro |
|---|---|---|
| LMArena Expert | — | 1503 |
Multilingual Not comparable
Hy4 preview: —, MiMo-V2.5-Pro: 55.1 (#34)
| Benchmark | Hy4 preview | MiMo-V2.5-Pro |
|---|---|---|
| LMArena Non-English | — | 1449 |
| LMArena Chinese | — | 1507 |
| LMArena French | — | 1488 |
| LMArena German | — | 1458 |
| LMArena Japanese | — | 1412 |
| LMArena Korean | — | 1437 |
| LMArena Russian | — | 1450 |
| LMArena Spanish | — | 1471 |
Instruction Following Not comparable
Hy4 preview: —, MiMo-V2.5-Pro: 77.5 (#21)
| Benchmark | Hy4 preview | MiMo-V2.5-Pro |
|---|---|---|
| LMArena Instruction Following | — | 1477 |
Long Context Not comparable
Hy4 preview: —, MiMo-V2.5-Pro: 45.4 (#37)
| Benchmark | Hy4 preview | MiMo-V2.5-Pro |
|---|---|---|
| LMArena Longer Query | — | 1483 |
Writing & Preference Not comparable
Hy4 preview: —, MiMo-V2.5-Pro: 65.3 (#49)
| Benchmark | Hy4 preview | MiMo-V2.5-Pro |
|---|---|---|
| LMArena Text | — | 1465 |
| LMArena Creative Writing | — | 1440 |
| EQ-Bench Creative Writing | — | 1493 |
| EQ-Bench 4 | — | 1208 |
| LMArena Multi-Turn | — | 1477 |
Frequently asked questions
Is Hy4 preview better than MiMo-V2.5-Pro?
Hy4 preview and MiMo-V2.5-Pro score almost the same on the Noometry Index (45.3 vs 45.2), so choose on price, context window or the category you care about most.
Which is cheaper, Hy4 preview or MiMo-V2.5-Pro?
MiMo-V2.5-Pro is cheaper. It lists at $0.43 per million input tokens and $0.87 per million output tokens; Hy4 preview lists at $0.75 and $2.25.
Is Hy4 preview or MiMo-V2.5-Pro better for coding?
Hy4 preview scores higher on coding benchmarks: 51.6 versus 47.4 in the Noometry coding category.
Which has the bigger context window?
Both accept 1.05M tokens.
How many benchmarks do Hy4 preview and MiMo-V2.5-Pro share?
3 benchmarks have published results for both models. Hy4 preview has 3 scored results on Noometry and MiMo-V2.5-Pro has 27.