Model comparison
Hy4 preview vs MiMo-V2.6-Pro
MiMo-V2.6-Pro is the stronger model overall, scoring 50.3 to 45.3 on the Noometry Index.
Last verified . 2 shared benchmarks.
TencentSummary
- They share 2 benchmarks with published results for both. Hy4 preview scores higher in 1 category and MiMo-V2.6-Pro in 2 categories; 3 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where MiMo-V2.6-Pro leads 43.1 to 31.9.
- The biggest single-benchmark swing is ProofBench: 75% for Hy4 preview and 70% for MiMo-V2.6-Pro.
- MiMo-V2.6-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-V2.6-Pro | |
|---|---|---|
| Provider | Tencent | Xiaomi |
| Noometry Index | 45.3 | 50.3 |
| Released | 2026-08-28 | 2026-09-21 |
| 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 | 19 |
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Category by category
Coding MiMo-V2.6-Pro leads
Hy4 preview: 51.6 (#38), MiMo-V2.6-Pro: 55.5 (#23)
| Benchmark | Hy4 preview | MiMo-V2.6-Pro |
|---|---|---|
| LMArena WebDev | 1632 | 1629 |
| SciCode | — | 60.9% |
| LMArena Coding | — | 1534 |
| ALE-Bench | — | 1,158 |
Agentic & Tool Use Not comparable
Hy4 preview: —, MiMo-V2.6-Pro: 37.5 (#35)
| Benchmark | Hy4 preview | MiMo-V2.6-Pro |
|---|---|---|
| APEX-Agents | — | 59.5% |
Reasoning MiMo-V2.6-Pro leads
Hy4 preview: 31.9 (#79), MiMo-V2.6-Pro: 43.1 (#50)
| Benchmark | Hy4 preview | MiMo-V2.6-Pro |
|---|---|---|
| NYT Connections (extended) | 68.2% | — |
| CritPt | — | 26.6% |
| LMArena Hard Prompts | — | 1512 |
Math Hy4 preview leads
Hy4 preview: 55.7 (#42), MiMo-V2.6-Pro: 54.5 (#45)
| Benchmark | Hy4 preview | MiMo-V2.6-Pro |
|---|---|---|
| ProofBench | 75% | 70% |
| LMArena Math | — | 1494 |
Knowledge Not comparable
Hy4 preview: —, MiMo-V2.6-Pro: 43.5 (#92)
| Benchmark | Hy4 preview | MiMo-V2.6-Pro |
|---|---|---|
| LMArena Expert | — | 1543 |
Multimodal Not comparable
Hy4 preview: —, MiMo-V2.6-Pro: 40.8 (#43)
| Benchmark | Hy4 preview | MiMo-V2.6-Pro |
|---|---|---|
| LMArena Vision | — | 1264 |
Multilingual Not comparable
Hy4 preview: —, MiMo-V2.6-Pro: 56.9 (#14)
| Benchmark | Hy4 preview | MiMo-V2.6-Pro |
|---|---|---|
| LMArena Non-English | — | 1474 |
| LMArena Chinese | — | 1529 |
| LMArena Russian | — | 1480 |
Instruction Following Not comparable
Hy4 preview: —, MiMo-V2.6-Pro: 78.2 (#12)
| Benchmark | Hy4 preview | MiMo-V2.6-Pro |
|---|---|---|
| LMArena Instruction Following | — | 1493 |
Long Context Not comparable
Hy4 preview: —, MiMo-V2.6-Pro: 46.0 (#27)
| Benchmark | Hy4 preview | MiMo-V2.6-Pro |
|---|---|---|
| LMArena Longer Query | — | 1501 |
Writing & Preference Not comparable
Hy4 preview: —, MiMo-V2.6-Pro: 66.8 (#33)
| Benchmark | Hy4 preview | MiMo-V2.6-Pro |
|---|---|---|
| LMArena Text | — | 1492 |
| LMArena Creative Writing | — | 1468 |
| LMArena Multi-Turn | — | 1464 |
Frequently asked questions
Is Hy4 preview better than MiMo-V2.6-Pro?
MiMo-V2.6-Pro is the stronger model overall, scoring 50.3 to 45.3 on the Noometry Index.
Which is cheaper, Hy4 preview or MiMo-V2.6-Pro?
MiMo-V2.6-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-V2.6-Pro better for coding?
MiMo-V2.6-Pro scores higher on coding benchmarks: 55.5 versus 51.6 in the Noometry coding category.
Which has the bigger context window?
Both accept 1.05M tokens.
How many benchmarks do Hy4 preview and MiMo-V2.6-Pro share?
2 benchmarks have published results for both models. Hy4 preview has 3 scored results on Noometry and MiMo-V2.6-Pro has 19.