Model comparison
MiMo-V2.5 vs Molmo 2 8b
MiMo-V2.5 is the stronger model overall, scoring 43.4 to 39.1 on the Noometry Index.
Last verified . 5 shared benchmarks.
Allen Institute for AI (Ai2)Summary
- They share 5 benchmarks with published results for both. MiMo-V2.5 scores higher in 5 categories and Molmo 2 8b in 0 categories; 5 gaps are clear of the uncertainty.
- The widest gap is in writing & preference, where MiMo-V2.5 leads 61.6 to 49.4.
Side by side
| MiMo-V2.5 | Molmo 2 8b | |
|---|---|---|
| Provider | Xiaomi | Allen Institute for AI (Ai2) |
| Noometry Index | 43.4 | 39.1 |
| Released | 2026-04-22 | — |
| Weights | Open | Open |
| Context window | 1.05M | — |
| Max output | 131K | — |
| Input $ / M tokens | $0.14 | — |
| Output $ / M tokens | $0.28 | — |
| Results tracked | 23 | 5 |
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Category by category
Coding Not comparable
MiMo-V2.5: 43.9 (#81), Molmo 2 8b: —
| Benchmark | MiMo-V2.5 | Molmo 2 8b |
|---|---|---|
| LMArena WebDev | 1438 | — |
| SciCode | 43.1% | — |
| LMArena Coding | 1469 | — |
| ALE-Bench | 513.95 | — |
Reasoning MiMo-V2.5 leads
MiMo-V2.5: 28.6 (#101), Molmo 2 8b: 25.6 (#146)
| Benchmark | MiMo-V2.5 | Molmo 2 8b |
|---|---|---|
| LMArena Hard Prompts | 1450 | 1287 |
| CritPt | 3.7% | — |
Math Not comparable
MiMo-V2.5: 36.8 (#163), Molmo 2 8b: —
| Benchmark | MiMo-V2.5 | Molmo 2 8b |
|---|---|---|
| ProofBench | 16% | — |
| LMArena Math | 1436 | — |
Knowledge Not comparable
MiMo-V2.5: 40.8 (#115), Molmo 2 8b: —
| Benchmark | MiMo-V2.5 | Molmo 2 8b |
|---|---|---|
| LMArena Expert | 1460 | — |
Multimodal MiMo-V2.5 leads
MiMo-V2.5: 39.8 (#54), Molmo 2 8b: 30.2 (#112)
| Benchmark | MiMo-V2.5 | Molmo 2 8b |
|---|---|---|
| LMArena Vision | 1247 | 1081 |
Multilingual MiMo-V2.5 leads
MiMo-V2.5: 51.9 (#99), Molmo 2 8b: 42.7 (#190)
| Benchmark | MiMo-V2.5 | Molmo 2 8b |
|---|---|---|
| LMArena Non-English | 1404 | 1276 |
| LMArena Chinese | 1468 | — |
| LMArena French | 1447 | — |
| LMArena German | 1421 | — |
| LMArena Japanese | 1306 | — |
| LMArena Korean | 1363 | — |
| LMArena Russian | 1395 | — |
| LMArena Spanish | 1416 | — |
Instruction Following MiMo-V2.5 leads
MiMo-V2.5: 75.5 (#60), Molmo 2 8b: 67.0 (#201)
| Benchmark | MiMo-V2.5 | Molmo 2 8b |
|---|---|---|
| LMArena Instruction Following | 1434 | 1270 |
Long Context Not comparable
MiMo-V2.5: 44.2 (#73), Molmo 2 8b: —
| Benchmark | MiMo-V2.5 | Molmo 2 8b |
|---|---|---|
| LMArena Longer Query | 1445 | — |
Writing & Preference MiMo-V2.5 leads
MiMo-V2.5: 61.6 (#86), Molmo 2 8b: 49.4 (#191)
| Benchmark | MiMo-V2.5 | Molmo 2 8b |
|---|---|---|
| LMArena Text | 1428 | 1288 |
| LMArena Creative Writing | 1393 | — |
| LMArena Multi-Turn | 1445 | — |
Frequently asked questions
Is MiMo-V2.5 better than Molmo 2 8b?
MiMo-V2.5 is the stronger model overall, scoring 43.4 to 39.1 on the Noometry Index.
How many benchmarks do MiMo-V2.5 and Molmo 2 8b share?
5 benchmarks have published results for both models. MiMo-V2.5 has 23 scored results on Noometry and Molmo 2 8b has 5.