Model comparison
Hy4 preview vs MiMo-V2-Flash
Hy4 preview is the stronger model overall, scoring 45.3 to 41.3 on the Noometry Index. MiMo-V2-Flash costs 7.1× less per token, which makes it the better buy when Hy4 preview's lead doesn't matter for your workload.
Last verified . 1 shared benchmarks.
TencentSummary
- They share 1 benchmark with published results for both. Hy4 preview scores higher in 3 categories and MiMo-V2-Flash in 0 categories; 3 gaps are clear of the uncertainty.
- The widest gap is in math, where Hy4 preview leads 55.7 to 38.3.
- MiMo-V2-Flash is cheaper at $0.14 / $0.28 per million input/output tokens, against $0.83 / $2.50 for Hy4 preview.
- Hy4 preview accepts more context: 1.05M tokens versus 262K.
Side by side
| Hy4 preview | MiMo-V2-Flash | |
|---|---|---|
| Provider | Tencent | Xiaomi |
| Noometry Index | 45.3 | 41.3 |
| Released | 2026-08-28 | 2025-12-16 |
| Weights | Open | Open |
| Context window | 1.05M | 262K |
| Max output | 64K | 66K |
| Input $ / M tokens | $0.83 | $0.14 |
| Output $ / M tokens | $2.50 | $0.28 |
| Results tracked | 3 | 21 |
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Category by category
Coding Hy4 preview leads
Hy4 preview: 51.6 (#38), MiMo-V2-Flash: 36.1 (#211)
| Benchmark | Hy4 preview | MiMo-V2-Flash |
|---|---|---|
| LMArena WebDev | 1632 | 1330 |
| SciCode | — | 25.9% |
| LMArena Coding | — | 1443 |
| ALE-Bench | — | 737.95 |
Reasoning Hy4 preview leads
Hy4 preview: 31.9 (#79), MiMo-V2-Flash: 24.9 (#157)
| Benchmark | Hy4 preview | MiMo-V2-Flash |
|---|---|---|
| NYT Connections (extended) | 68.2% | — |
| CritPt | — | 0% |
| LMArena Hard Prompts | — | 1420 |
Math Hy4 preview leads
Hy4 preview: 55.7 (#42), MiMo-V2-Flash: 38.3 (#139)
| Benchmark | Hy4 preview | MiMo-V2-Flash |
|---|---|---|
| ProofBench | 75% | — |
| LMArena Math | — | 1396 |
Knowledge Not comparable
Hy4 preview: —, MiMo-V2-Flash: 39.7 (#131)
| Benchmark | Hy4 preview | MiMo-V2-Flash |
|---|---|---|
| LMArena Expert | — | 1425 |
Multilingual Not comparable
Hy4 preview: —, MiMo-V2-Flash: 51.0 (#113)
| Benchmark | Hy4 preview | MiMo-V2-Flash |
|---|---|---|
| LMArena Non-English | — | 1392 |
| LMArena Chinese | — | 1462 |
| LMArena French | — | 1429 |
| LMArena German | — | 1395 |
| LMArena Japanese | — | 1325 |
| LMArena Korean | — | 1358 |
| LMArena Russian | — | 1387 |
| LMArena Spanish | — | 1420 |
Instruction Following Not comparable
Hy4 preview: —, MiMo-V2-Flash: 73.5 (#120)
| Benchmark | Hy4 preview | MiMo-V2-Flash |
|---|---|---|
| LMArena Instruction Following | — | 1392 |
Long Context Not comparable
Hy4 preview: —, MiMo-V2-Flash: 43.0 (#110)
| Benchmark | Hy4 preview | MiMo-V2-Flash |
|---|---|---|
| LMArena Longer Query | — | 1409 |
Writing & Preference Not comparable
Hy4 preview: —, MiMo-V2-Flash: 59.7 (#106)
| Benchmark | Hy4 preview | MiMo-V2-Flash |
|---|---|---|
| LMArena Text | — | 1411 |
| LMArena Creative Writing | — | 1375 |
| LMArena Multi-Turn | — | 1404 |
Frequently asked questions
Is Hy4 preview better than MiMo-V2-Flash?
Hy4 preview is the stronger model overall, scoring 45.3 to 41.3 on the Noometry Index. MiMo-V2-Flash costs 7.1× less per token, which makes it the better buy when Hy4 preview's lead doesn't matter for your workload.
Which is cheaper, Hy4 preview or MiMo-V2-Flash?
MiMo-V2-Flash is cheaper. It lists at $0.14 per million input tokens and $0.28 per million output tokens; Hy4 preview lists at $0.83 and $2.50.
Is Hy4 preview or MiMo-V2-Flash better for coding?
Hy4 preview scores higher on coding benchmarks: 51.6 versus 36.1 in the Noometry coding category.
Which has the bigger context window?
Hy4 preview does, with 1.05M tokens against 262K.
How many benchmarks do Hy4 preview and MiMo-V2-Flash share?
1 benchmark has published results for both models. Hy4 preview has 3 scored results on Noometry and MiMo-V2-Flash has 21.