Model comparison
MiMo-V2.5 vs Step 3.7 Flash
MiMo-V2.5 is the stronger model overall, scoring 43.4 to 37.3 on the Noometry Index.
Last verified . 3 shared benchmarks.
StepFunSummary
- They share 3 benchmarks with published results for both. MiMo-V2.5 scores higher in 2 categories and Step 3.7 Flash in 1 category; 3 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where MiMo-V2.5 leads 28.6 to 21.6.
- MiMo-V2.5 is cheaper at $0.14 / $0.28 per million input/output tokens, against $0.18 / $1.11 for Step 3.7 Flash.
- MiMo-V2.5 accepts more context: 1.05M tokens versus 256K.
Side by side
| MiMo-V2.5 | Step 3.7 Flash | |
|---|---|---|
| Provider | Xiaomi | StepFun |
| Noometry Index | 43.4 | 37.3 |
| Released | 2026-04-22 | 2026-05-29 |
| Weights | Open | Open |
| Context window | 1.05M | 256K |
| Max output | 131K | 256K |
| Input $ / M tokens | $0.14 | $0.18 |
| Output $ / M tokens | $0.28 | $1.11 |
| Results tracked | 23 | 5 |
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Category by category
Coding MiMo-V2.5 leads
MiMo-V2.5: 43.9 (#81), Step 3.7 Flash: 40.0 (#150)
| Benchmark | MiMo-V2.5 | Step 3.7 Flash |
|---|---|---|
| SciCode | 43.1% | 40% |
| ALE-Bench | 513.95 | 694.12 |
| LMArena WebDev | 1438 | — |
| LMArena Coding | 1469 | — |
Reasoning MiMo-V2.5 leads
MiMo-V2.5: 28.6 (#101), Step 3.7 Flash: 21.6 (#219)
| Benchmark | MiMo-V2.5 | Step 3.7 Flash |
|---|---|---|
| CritPt | 3.7% | 2.3% |
| NYT Connections (extended) | — | 39.7% |
| LMArena Hard Prompts | 1450 | — |
Math Step 3.7 Flash leads
MiMo-V2.5: 36.8 (#163), Step 3.7 Flash: 42.9 (#82)
| Benchmark | MiMo-V2.5 | Step 3.7 Flash |
|---|---|---|
| MathArena Final-Answer Competitions | — | 68.5% |
| ProofBench | 16% | — |
| LMArena Math | 1436 | — |
Knowledge Not comparable
MiMo-V2.5: 40.8 (#115), Step 3.7 Flash: —
| Benchmark | MiMo-V2.5 | Step 3.7 Flash |
|---|---|---|
| LMArena Expert | 1460 | — |
Multimodal Not comparable
MiMo-V2.5: 39.8 (#54), Step 3.7 Flash: —
| Benchmark | MiMo-V2.5 | Step 3.7 Flash |
|---|---|---|
| LMArena Vision | 1247 | — |
Multilingual Not comparable
MiMo-V2.5: 51.9 (#99), Step 3.7 Flash: —
| Benchmark | MiMo-V2.5 | Step 3.7 Flash |
|---|---|---|
| LMArena Non-English | 1404 | — |
| LMArena Chinese | 1468 | — |
| LMArena French | 1447 | — |
| LMArena German | 1421 | — |
| LMArena Japanese | 1306 | — |
| LMArena Korean | 1363 | — |
| LMArena Russian | 1395 | — |
| LMArena Spanish | 1416 | — |
Instruction Following Not comparable
MiMo-V2.5: 75.5 (#60), Step 3.7 Flash: —
| Benchmark | MiMo-V2.5 | Step 3.7 Flash |
|---|---|---|
| LMArena Instruction Following | 1434 | — |
Long Context Not comparable
MiMo-V2.5: 44.2 (#73), Step 3.7 Flash: —
| Benchmark | MiMo-V2.5 | Step 3.7 Flash |
|---|---|---|
| LMArena Longer Query | 1445 | — |
Writing & Preference Not comparable
MiMo-V2.5: 61.6 (#86), Step 3.7 Flash: —
| Benchmark | MiMo-V2.5 | Step 3.7 Flash |
|---|---|---|
| LMArena Text | 1428 | — |
| LMArena Creative Writing | 1393 | — |
| LMArena Multi-Turn | 1445 | — |
Frequently asked questions
Is MiMo-V2.5 better than Step 3.7 Flash?
MiMo-V2.5 is the stronger model overall, scoring 43.4 to 37.3 on the Noometry Index.
Which is cheaper, MiMo-V2.5 or Step 3.7 Flash?
MiMo-V2.5 is cheaper. It lists at $0.14 per million input tokens and $0.28 per million output tokens; Step 3.7 Flash lists at $0.18 and $1.11.
Is MiMo-V2.5 or Step 3.7 Flash better for coding?
MiMo-V2.5 scores higher on coding benchmarks: 43.9 versus 40.0 in the Noometry coding category.
Which has the bigger context window?
MiMo-V2.5 does, with 1.05M tokens against 256K.
How many benchmarks do MiMo-V2.5 and Step 3.7 Flash share?
3 benchmarks have published results for both models. MiMo-V2.5 has 23 scored results on Noometry and Step 3.7 Flash has 5.