Model comparison
MiMo-V2.6-Pro vs Solar Pro4
MiMo-V2.6-Pro is the stronger model overall, scoring 50.3 to 42.1 on the Noometry Index.
Last verified . 13 shared benchmarks.
UpstageSummary
- They share 13 benchmarks with published results for both. MiMo-V2.6-Pro scores higher in 8 categories and Solar Pro4 in 0 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in math, where MiMo-V2.6-Pro leads 54.5 to 38.8.
- Both cost about the same: $0.43 input and $0.87 output per million tokens.
- MiMo-V2.6-Pro accepts more context: 1.05M tokens versus 524K.
- MiMo-V2.6-Pro has downloadable open weights; the other is API-only.
Side by side
| MiMo-V2.6-Pro | Solar Pro4 | |
|---|---|---|
| Provider | Xiaomi | Upstage |
| Noometry Index | 50.3 | 42.1 |
| Released | 2026-09-21 | 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 | 19 | 18 |
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Category by category
Coding MiMo-V2.6-Pro leads
MiMo-V2.6-Pro: 55.5 (#23), Solar Pro4: 40.1 (#149)
| Benchmark | MiMo-V2.6-Pro | Solar Pro4 |
|---|---|---|
| LMArena WebDev | 1629 | 1371 |
| LMArena Coding | 1534 | 1437 |
| SciCode | 60.9% | — |
| ALE-Bench | 1,158 | — |
Agentic & Tool Use Not comparable
MiMo-V2.6-Pro: 37.5 (#35), Solar Pro4: —
| Benchmark | MiMo-V2.6-Pro | Solar Pro4 |
|---|---|---|
| APEX-Agents | 59.5% | — |
Reasoning MiMo-V2.6-Pro leads
MiMo-V2.6-Pro: 43.1 (#50), Solar Pro4: 28.5 (#104)
| Benchmark | MiMo-V2.6-Pro | Solar Pro4 |
|---|---|---|
| LMArena Hard Prompts | 1512 | 1399 |
| CritPt | 26.6% | — |
Math MiMo-V2.6-Pro leads
MiMo-V2.6-Pro: 54.5 (#45), Solar Pro4: 38.8 (#128)
| Benchmark | MiMo-V2.6-Pro | Solar Pro4 |
|---|---|---|
| LMArena Math | 1494 | 1416 |
| ProofBench | 70% | — |
Knowledge MiMo-V2.6-Pro leads
MiMo-V2.6-Pro: 43.5 (#92), Solar Pro4: 39.8 (#129)
| Benchmark | MiMo-V2.6-Pro | Solar Pro4 |
|---|---|---|
| LMArena Expert | 1543 | 1427 |
Multimodal Not comparable
MiMo-V2.6-Pro: 40.8 (#43), Solar Pro4: —
| Benchmark | MiMo-V2.6-Pro | Solar Pro4 |
|---|---|---|
| LMArena Vision | 1264 | — |
Multilingual MiMo-V2.6-Pro leads
MiMo-V2.6-Pro: 56.9 (#14), Solar Pro4: 48.7 (#139)
| Benchmark | MiMo-V2.6-Pro | Solar Pro4 |
|---|---|---|
| LMArena Non-English | 1474 | 1361 |
| LMArena Chinese | 1529 | 1415 |
| LMArena Russian | 1480 | 1360 |
| LMArena French | — | 1397 |
| LMArena German | — | 1364 |
| LMArena Japanese | — | 1309 |
| LMArena Korean | — | 1382 |
| LMArena Spanish | — | 1401 |
Instruction Following MiMo-V2.6-Pro leads
MiMo-V2.6-Pro: 78.2 (#12), Solar Pro4: 72.7 (#132)
| Benchmark | MiMo-V2.6-Pro | Solar Pro4 |
|---|---|---|
| LMArena Instruction Following | 1493 | 1377 |
Long Context MiMo-V2.6-Pro leads
MiMo-V2.6-Pro: 46.0 (#27), Solar Pro4: 42.1 (#130)
| Benchmark | MiMo-V2.6-Pro | Solar Pro4 |
|---|---|---|
| LMArena Longer Query | 1501 | 1381 |
Writing & Preference MiMo-V2.6-Pro leads
MiMo-V2.6-Pro: 66.8 (#33), Solar Pro4: 56.5 (#138)
| Benchmark | MiMo-V2.6-Pro | Solar Pro4 |
|---|---|---|
| LMArena Text | 1492 | 1386 |
| LMArena Creative Writing | 1468 | 1316 |
| LMArena Multi-Turn | 1464 | 1385 |
Frequently asked questions
Is MiMo-V2.6-Pro better than Solar Pro4?
MiMo-V2.6-Pro is the stronger model overall, scoring 50.3 to 42.1 on the Noometry Index.
Which is cheaper, MiMo-V2.6-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-V2.6-Pro lists at $0.43 and $0.87.
Is MiMo-V2.6-Pro or Solar Pro4 better for coding?
MiMo-V2.6-Pro scores higher on coding benchmarks: 55.5 versus 40.1 in the Noometry coding category.
Which has the bigger context window?
MiMo-V2.6-Pro does, with 1.05M tokens against 524K.
How many benchmarks do MiMo-V2.6-Pro and Solar Pro4 share?
13 benchmarks have published results for both models. MiMo-V2.6-Pro has 19 scored results on Noometry and Solar Pro4 has 18.