Model comparison
Amazon Nova Experimental Chat 10 20 vs MiMo-V2.5
MiMo-V2.5 is the stronger model overall, scoring 43.4 to 42.1 on the Noometry Index.
Last verified . 17 shared benchmarks.
Summary
- They share 17 benchmarks with published results for both. Amazon Nova Experimental Chat 10 20 scores higher in 1 category and MiMo-V2.5 in 7 categories; 7 gaps are clear of the uncertainty.
- The widest gap is in writing & preference, where MiMo-V2.5 leads 61.6 to 56.6.
- MiMo-V2.5 has downloadable open weights; the other is API-only.
Side by side
| Amazon Nova Experimental Chat 10 20 | MiMo-V2.5 | |
|---|---|---|
| Provider | Amazon | Xiaomi |
| Noometry Index | 42.1 | 43.4 |
| Released | — | 2026-04-22 |
| Weights | Proprietary | Open |
| Context window | — | 1.05M |
| Max output | — | 131K |
| Input $ / M tokens | — | $0.14 |
| Output $ / M tokens | — | $0.28 |
| Results tracked | 17 | 23 |
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Category by category
Coding MiMo-V2.5 leads
Amazon Nova Experimental Chat 10 20: 41.6 (#123), MiMo-V2.5: 43.9 (#81)
| Benchmark | Amazon Nova Experimental Chat 10 20 | MiMo-V2.5 |
|---|---|---|
| LMArena Coding | 1412 | 1469 |
| LMArena WebDev | — | 1438 |
| SciCode | — | 43.1% |
| ALE-Bench | — | 513.95 |
Reasoning Too close to call
Amazon Nova Experimental Chat 10 20: 28.4 (#106), MiMo-V2.5: 28.6 (#101)
| Benchmark | Amazon Nova Experimental Chat 10 20 | MiMo-V2.5 |
|---|---|---|
| LMArena Hard Prompts | 1396 | 1450 |
| CritPt | — | 3.7% |
Math Amazon Nova Experimental Chat 10 20 leads
Amazon Nova Experimental Chat 10 20: 39.0 (#119), MiMo-V2.5: 36.8 (#163)
| Benchmark | Amazon Nova Experimental Chat 10 20 | MiMo-V2.5 |
|---|---|---|
| LMArena Math | 1425 | 1436 |
| ProofBench | — | 16% |
Knowledge MiMo-V2.5 leads
Amazon Nova Experimental Chat 10 20: 38.5 (#144), MiMo-V2.5: 40.8 (#115)
| Benchmark | Amazon Nova Experimental Chat 10 20 | MiMo-V2.5 |
|---|---|---|
| LMArena Expert | 1386 | 1460 |
Multimodal Not comparable
Amazon Nova Experimental Chat 10 20: —, MiMo-V2.5: 39.8 (#54)
| Benchmark | Amazon Nova Experimental Chat 10 20 | MiMo-V2.5 |
|---|---|---|
| LMArena Vision | — | 1247 |
Multilingual MiMo-V2.5 leads
Amazon Nova Experimental Chat 10 20: 49.5 (#131), MiMo-V2.5: 51.9 (#99)
| Benchmark | Amazon Nova Experimental Chat 10 20 | MiMo-V2.5 |
|---|---|---|
| LMArena Non-English | 1372 | 1404 |
| LMArena Chinese | 1404 | 1468 |
| LMArena French | 1425 | 1447 |
| LMArena German | 1391 | 1421 |
| LMArena Japanese | 1360 | 1306 |
| LMArena Korean | 1324 | 1363 |
| LMArena Russian | 1371 | 1395 |
| LMArena Spanish | 1382 | 1416 |
Instruction Following MiMo-V2.5 leads
Amazon Nova Experimental Chat 10 20: 72.1 (#141), MiMo-V2.5: 75.5 (#60)
| Benchmark | Amazon Nova Experimental Chat 10 20 | MiMo-V2.5 |
|---|---|---|
| LMArena Instruction Following | 1365 | 1434 |
Long Context MiMo-V2.5 leads
Amazon Nova Experimental Chat 10 20: 41.7 (#133), MiMo-V2.5: 44.2 (#73)
| Benchmark | Amazon Nova Experimental Chat 10 20 | MiMo-V2.5 |
|---|---|---|
| LMArena Longer Query | 1370 | 1445 |
Writing & Preference MiMo-V2.5 leads
Amazon Nova Experimental Chat 10 20: 56.6 (#136), MiMo-V2.5: 61.6 (#86)
| Benchmark | Amazon Nova Experimental Chat 10 20 | MiMo-V2.5 |
|---|---|---|
| LMArena Text | 1394 | 1428 |
| LMArena Creative Writing | 1318 | 1393 |
| LMArena Multi-Turn | 1364 | 1445 |
Frequently asked questions
Is Amazon Nova Experimental Chat 10 20 better than MiMo-V2.5?
MiMo-V2.5 is the stronger model overall, scoring 43.4 to 42.1 on the Noometry Index.
Is Amazon Nova Experimental Chat 10 20 or MiMo-V2.5 better for coding?
MiMo-V2.5 scores higher on coding benchmarks: 43.9 versus 41.6 in the Noometry coding category.
How many benchmarks do Amazon Nova Experimental Chat 10 20 and MiMo-V2.5 share?
17 benchmarks have published results for both models. Amazon Nova Experimental Chat 10 20 has 17 scored results on Noometry and MiMo-V2.5 has 23.