Model comparison
MiMo-V2.5-Pro vs Solar Pro4
MiMo-V2.5-Pro is the stronger model overall, scoring 45.2 to 42.1 on the Noometry Index.
Last verified . 18 shared benchmarks.
UpstageSummary
- They share 18 benchmarks with published results for both. MiMo-V2.5-Pro scores higher in 7 categories and Solar Pro4 in 1 category; 8 gaps are clear of the uncertainty.
- The widest gap is in writing & preference, where MiMo-V2.5-Pro leads 65.3 to 56.5.
- Both cost about the same: $0.43 input and $0.87 output per million tokens.
- MiMo-V2.5-Pro accepts more context: 1.05M tokens versus 524K.
- MiMo-V2.5-Pro has downloadable open weights; the other is API-only.
Side by side
| MiMo-V2.5-Pro | Solar Pro4 | |
|---|---|---|
| Provider | Xiaomi | Upstage |
| Noometry Index | 45.2 | 42.1 |
| Released | 2026-04-22 | 2026-08-06 |
| Weights | Open | Proprietary |
| Context window | 1.05M | 524K |
| Max output | 131K | 131K |
| Input $ / M tokens | $0.43 | $0.30 |
| Output $ / M tokens | $0.87 | $1.20 |
| Results tracked | 27 | 18 |
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Category by category
Coding MiMo-V2.5-Pro leads
MiMo-V2.5-Pro: 47.4 (#60), Solar Pro4: 40.1 (#149)
| Benchmark | MiMo-V2.5-Pro | Solar Pro4 |
|---|---|---|
| LMArena WebDev | 1479 | 1371 |
| LMArena Coding | 1503 | 1437 |
| SciCode | 50.2% | — |
| ALE-Bench | 899.8 | — |
Reasoning Solar Pro4 leads
MiMo-V2.5-Pro: 26.8 (#130), Solar Pro4: 28.5 (#104)
| Benchmark | MiMo-V2.5-Pro | Solar Pro4 |
|---|---|---|
| LMArena Hard Prompts | 1488 | 1399 |
| NYT Connections (extended) | 34.4% | — |
| CritPt | 4% | — |
| DTBench | 84.5% | — |
| LMCA | 29.5% | — |
Math MiMo-V2.5-Pro leads
MiMo-V2.5-Pro: 40.0 (#96), Solar Pro4: 38.8 (#128)
| Benchmark | MiMo-V2.5-Pro | Solar Pro4 |
|---|---|---|
| LMArena Math | 1481 | 1416 |
| ProofBench | 22% | — |
Knowledge MiMo-V2.5-Pro leads
MiMo-V2.5-Pro: 42.2 (#98), Solar Pro4: 39.8 (#129)
| Benchmark | MiMo-V2.5-Pro | Solar Pro4 |
|---|---|---|
| LMArena Expert | 1503 | 1427 |
Multilingual MiMo-V2.5-Pro leads
MiMo-V2.5-Pro: 55.1 (#34), Solar Pro4: 48.7 (#139)
| Benchmark | MiMo-V2.5-Pro | Solar Pro4 |
|---|---|---|
| LMArena Non-English | 1449 | 1361 |
| LMArena Chinese | 1507 | 1415 |
| LMArena French | 1488 | 1397 |
| LMArena German | 1458 | 1364 |
| LMArena Japanese | 1412 | 1309 |
| LMArena Korean | 1437 | 1382 |
| LMArena Russian | 1450 | 1360 |
| LMArena Spanish | 1471 | 1401 |
Instruction Following MiMo-V2.5-Pro leads
MiMo-V2.5-Pro: 77.5 (#21), Solar Pro4: 72.7 (#132)
| Benchmark | MiMo-V2.5-Pro | Solar Pro4 |
|---|---|---|
| LMArena Instruction Following | 1477 | 1377 |
Long Context MiMo-V2.5-Pro leads
MiMo-V2.5-Pro: 45.4 (#37), Solar Pro4: 42.1 (#130)
| Benchmark | MiMo-V2.5-Pro | Solar Pro4 |
|---|---|---|
| LMArena Longer Query | 1483 | 1381 |
Writing & Preference MiMo-V2.5-Pro leads
MiMo-V2.5-Pro: 65.3 (#49), Solar Pro4: 56.5 (#138)
| Benchmark | MiMo-V2.5-Pro | Solar Pro4 |
|---|---|---|
| LMArena Text | 1465 | 1386 |
| LMArena Creative Writing | 1440 | 1316 |
| LMArena Multi-Turn | 1477 | 1385 |
| EQ-Bench Creative Writing | 1493 | — |
| EQ-Bench 4 | 1208 | — |
Frequently asked questions
Is MiMo-V2.5-Pro better than Solar Pro4?
MiMo-V2.5-Pro is the stronger model overall, scoring 45.2 to 42.1 on the Noometry Index.
Which is cheaper, MiMo-V2.5-Pro or Solar Pro4?
Solar Pro4 is cheaper. It lists at $0.30 per million input tokens and $1.20 per million output tokens; MiMo-V2.5-Pro lists at $0.43 and $0.87.
Is MiMo-V2.5-Pro or Solar Pro4 better for coding?
MiMo-V2.5-Pro scores higher on coding benchmarks: 47.4 versus 40.1 in the Noometry coding category.
Which has the bigger context window?
MiMo-V2.5-Pro does, with 1.05M tokens against 524K.
How many benchmarks do MiMo-V2.5-Pro and Solar Pro4 share?
18 benchmarks have published results for both models. MiMo-V2.5-Pro has 27 scored results on Noometry and Solar Pro4 has 18.