Model comparison
MiMo-V2.5 vs MiMo-V2-Flash
MiMo-V2.5 is the stronger model overall, scoring 43.0 to 40.8 on the Noometry Index.
Last verified . 21 shared benchmarks.
Summary
- They share 21 benchmarks with published results for both. MiMo-V2.5 scores higher in 7 categories and MiMo-V2-Flash in 1 category; 6 gaps are clear of the uncertainty.
- The widest gap is in coding, where MiMo-V2.5 leads 43.6 to 35.8.
- The biggest single-benchmark swing is SciCode: 43.1% for MiMo-V2.5 and 25.9% for MiMo-V2-Flash.
- Both cost about the same: $0.14 input and $0.28 output per million tokens.
- MiMo-V2.5 accepts more context: 1.05M tokens versus 262K.
Side by side
| MiMo-V2.5 | MiMo-V2-Flash | |
|---|---|---|
| Provider | Xiaomi | Xiaomi |
| Noometry Index | 43.0 | 40.8 |
| Released | 2026-04-22 | 2025-12-16 |
| Weights | Open | Open |
| Context window | 1.05M | 262K |
| Max output | 131K | 66K |
| Input $ / M tokens | $0.14 | $0.14 |
| Output $ / M tokens | $0.28 | $0.28 |
| Results tracked | 23 | 21 |
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Category by category
Coding MiMo-V2.5 leads
MiMo-V2.5: 43.6 (#75), MiMo-V2-Flash: 35.8 (#205)
| Benchmark | MiMo-V2.5 | MiMo-V2-Flash |
|---|---|---|
| LMArena WebDev | 1438 | 1330 |
| SciCode | 43.1% | 25.9% |
| LMArena Coding | 1469 | 1443 |
| ALE-Bench | 513.95 | 737.95 |
Reasoning MiMo-V2.5 leads
MiMo-V2.5: 27.8 (#98), MiMo-V2-Flash: 24.1 (#155)
| Benchmark | MiMo-V2.5 | MiMo-V2-Flash |
|---|---|---|
| CritPt | 3.7% | 0% |
| LMArena Hard Prompts | 1450 | 1420 |
Math Too close to call
MiMo-V2.5: 35.4 (#145), MiMo-V2-Flash: 35.6 (#141)
| Benchmark | MiMo-V2.5 | MiMo-V2-Flash |
|---|---|---|
| LMArena Math | 1436 | 1396 |
| ProofBench | 16% | — |
Knowledge MiMo-V2.5 leads
MiMo-V2.5: 40.2 (#109), MiMo-V2-Flash: 39.1 (#126)
| Benchmark | MiMo-V2.5 | MiMo-V2-Flash |
|---|---|---|
| LMArena Expert | 1459 | 1425 |
Multimodal Not comparable
MiMo-V2.5: 39.0 (#53), MiMo-V2-Flash: —
| Benchmark | MiMo-V2.5 | MiMo-V2-Flash |
|---|---|---|
| LMArena Vision | 1245 | — |
Multilingual Too close to call
MiMo-V2.5: 52.0 (#96), MiMo-V2-Flash: 51.1 (#109)
| Benchmark | MiMo-V2.5 | MiMo-V2-Flash |
|---|---|---|
| LMArena Non-English | 1404 | 1391 |
| LMArena Chinese | 1467 | 1463 |
| LMArena French | 1447 | 1429 |
| LMArena German | 1421 | 1395 |
| LMArena Japanese | 1304 | 1324 |
| LMArena Korean | 1363 | 1358 |
| LMArena Russian | 1395 | 1387 |
| LMArena Spanish | 1412 | 1420 |
Instruction Following MiMo-V2.5 leads
MiMo-V2.5: 75.7 (#55), MiMo-V2-Flash: 73.7 (#115)
| Benchmark | MiMo-V2.5 | MiMo-V2-Flash |
|---|---|---|
| LMArena Instruction Following | 1433 | 1392 |
Long Context MiMo-V2.5 leads
MiMo-V2.5: 44.1 (#69), MiMo-V2-Flash: 43.0 (#106)
| Benchmark | MiMo-V2.5 | MiMo-V2-Flash |
|---|---|---|
| LMArena Longer Query | 1444 | 1409 |
Writing & Preference MiMo-V2.5 leads
MiMo-V2.5: 61.8 (#82), MiMo-V2-Flash: 59.9 (#101)
| Benchmark | MiMo-V2.5 | MiMo-V2-Flash |
|---|---|---|
| LMArena Text | 1427 | 1411 |
| LMArena Creative Writing | 1392 | 1375 |
| LMArena Multi-Turn | 1445 | 1404 |
Frequently asked questions
Is MiMo-V2.5 better than MiMo-V2-Flash?
MiMo-V2.5 is the stronger model overall, scoring 43.0 to 40.8 on the Noometry Index.
Which is cheaper, MiMo-V2.5 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; MiMo-V2.5 lists at $0.14 and $0.28.
Is MiMo-V2.5 or MiMo-V2-Flash better for coding?
MiMo-V2.5 scores higher on coding benchmarks: 43.6 versus 35.8 in the Noometry coding category.
Which has the bigger context window?
MiMo-V2.5 does, with 1.05M tokens against 262K.
How many benchmarks do MiMo-V2.5 and MiMo-V2-Flash share?
21 benchmarks have published results for both models. MiMo-V2.5 has 23 scored results on Noometry and MiMo-V2-Flash has 21.