Model comparison
MiMo-V2.5-Pro vs Step 3.7 Flash
MiMo-V2.5-Pro is the stronger model overall, scoring 45.2 to 37.3 on the Noometry Index.
Last verified . 4 shared benchmarks.
StepFunSummary
- They share 4 benchmarks with published results for both. MiMo-V2.5-Pro 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 coding, where MiMo-V2.5-Pro leads 47.4 to 40.0.
- The biggest single-benchmark swing is SciCode: 50.2% for MiMo-V2.5-Pro and 40% for Step 3.7 Flash.
- Step 3.7 Flash is cheaper at $0.18 / $1.11 per million input/output tokens, against $0.43 / $0.87 for MiMo-V2.5-Pro.
- MiMo-V2.5-Pro accepts more context: 1.05M tokens versus 256K.
Side by side
| MiMo-V2.5-Pro | Step 3.7 Flash | |
|---|---|---|
| Provider | Xiaomi | StepFun |
| Noometry Index | 45.2 | 37.3 |
| Released | 2026-04-22 | 2026-05-29 |
| Weights | Open | Open |
| Context window | 1.05M | 256K |
| Max output | 131K | 256K |
| Input $ / M tokens | $0.43 | $0.18 |
| Output $ / M tokens | $0.87 | $1.11 |
| Results tracked | 27 | 5 |
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Category by category
Coding MiMo-V2.5-Pro leads
MiMo-V2.5-Pro: 47.4 (#60), Step 3.7 Flash: 40.0 (#150)
| Benchmark | MiMo-V2.5-Pro | Step 3.7 Flash |
|---|---|---|
| SciCode | 50.2% | 40% |
| ALE-Bench | 899.8 | 694.12 |
| LMArena WebDev | 1479 | — |
| LMArena Coding | 1503 | — |
Reasoning MiMo-V2.5-Pro leads
MiMo-V2.5-Pro: 26.8 (#130), Step 3.7 Flash: 21.6 (#219)
| Benchmark | MiMo-V2.5-Pro | Step 3.7 Flash |
|---|---|---|
| NYT Connections (extended) | 34.4% | 39.7% |
| CritPt | 4% | 2.3% |
| LMArena Hard Prompts | 1488 | — |
| DTBench | 84.5% | — |
| LMCA | 29.5% | — |
Math Step 3.7 Flash leads
MiMo-V2.5-Pro: 40.0 (#96), Step 3.7 Flash: 42.9 (#82)
| Benchmark | MiMo-V2.5-Pro | Step 3.7 Flash |
|---|---|---|
| MathArena Final-Answer Competitions | — | 68.5% |
| ProofBench | 22% | — |
| LMArena Math | 1481 | — |
Knowledge Not comparable
MiMo-V2.5-Pro: 42.2 (#98), Step 3.7 Flash: —
| Benchmark | MiMo-V2.5-Pro | Step 3.7 Flash |
|---|---|---|
| LMArena Expert | 1503 | — |
Multilingual Not comparable
MiMo-V2.5-Pro: 55.1 (#34), Step 3.7 Flash: —
| Benchmark | MiMo-V2.5-Pro | Step 3.7 Flash |
|---|---|---|
| LMArena Non-English | 1449 | — |
| LMArena Chinese | 1507 | — |
| LMArena French | 1488 | — |
| LMArena German | 1458 | — |
| LMArena Japanese | 1412 | — |
| LMArena Korean | 1437 | — |
| LMArena Russian | 1450 | — |
| LMArena Spanish | 1471 | — |
Instruction Following Not comparable
MiMo-V2.5-Pro: 77.5 (#21), Step 3.7 Flash: —
| Benchmark | MiMo-V2.5-Pro | Step 3.7 Flash |
|---|---|---|
| LMArena Instruction Following | 1477 | — |
Long Context Not comparable
MiMo-V2.5-Pro: 45.4 (#37), Step 3.7 Flash: —
| Benchmark | MiMo-V2.5-Pro | Step 3.7 Flash |
|---|---|---|
| LMArena Longer Query | 1483 | — |
Writing & Preference Not comparable
MiMo-V2.5-Pro: 65.3 (#49), Step 3.7 Flash: —
| Benchmark | MiMo-V2.5-Pro | Step 3.7 Flash |
|---|---|---|
| LMArena Text | 1465 | — |
| LMArena Creative Writing | 1440 | — |
| EQ-Bench Creative Writing | 1493 | — |
| EQ-Bench 4 | 1208 | — |
| LMArena Multi-Turn | 1477 | — |
Frequently asked questions
Is MiMo-V2.5-Pro better than Step 3.7 Flash?
MiMo-V2.5-Pro is the stronger model overall, scoring 45.2 to 37.3 on the Noometry Index.
Which is cheaper, MiMo-V2.5-Pro or Step 3.7 Flash?
Step 3.7 Flash is cheaper. It lists at $0.18 per million input tokens and $1.11 per million output tokens; MiMo-V2.5-Pro lists at $0.43 and $0.87.
Is MiMo-V2.5-Pro or Step 3.7 Flash better for coding?
MiMo-V2.5-Pro scores higher on coding benchmarks: 47.4 versus 40.0 in the Noometry coding category.
Which has the bigger context window?
MiMo-V2.5-Pro does, with 1.05M tokens against 256K.
How many benchmarks do MiMo-V2.5-Pro and Step 3.7 Flash share?
4 benchmarks have published results for both models. MiMo-V2.5-Pro has 27 scored results on Noometry and Step 3.7 Flash has 5.