Model comparison
Mercury vs MiMo-V2.5
MiMo-V2.5 is the stronger model overall, scoring 43.4 to 37.6 on the Noometry Index.
Last verified . 8 shared benchmarks.
Summary
- They share 8 benchmarks with published results for both. Mercury scores higher in 0 categories and MiMo-V2.5 in 6 categories; 6 gaps are clear of the uncertainty.
- The widest gap is in writing & preference, where MiMo-V2.5 leads 61.6 to 46.2.
- MiMo-V2.5 has downloadable open weights; the other is API-only.
Side by side
| Mercury | MiMo-V2.5 | |
|---|---|---|
| Provider | Inception | Xiaomi |
| Noometry Index | 37.6 | 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 | 9 | 23 |
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Category by category
Coding MiMo-V2.5 leads
Mercury: 38.7 (#170), MiMo-V2.5: 43.9 (#81)
| Benchmark | Mercury | MiMo-V2.5 |
|---|---|---|
| LMArena Coding | 1322 | 1469 |
| LMArena WebDev | — | 1438 |
| SciCode | — | 43.1% |
| ALE-Bench | — | 513.95 |
Reasoning MiMo-V2.5 leads
Mercury: 17.5 (#293), MiMo-V2.5: 28.6 (#101)
| Benchmark | Mercury | MiMo-V2.5 |
|---|---|---|
| LMArena Hard Prompts | 1285 | 1450 |
| Kagi LLM Benchmark | 21.6% | — |
| CritPt | — | 3.7% |
Math Not comparable
Mercury: —, MiMo-V2.5: 36.8 (#163)
| Benchmark | Mercury | MiMo-V2.5 |
|---|---|---|
| ProofBench | — | 16% |
| LMArena Math | — | 1436 |
Knowledge Not comparable
Mercury: —, MiMo-V2.5: 40.8 (#115)
| Benchmark | Mercury | MiMo-V2.5 |
|---|---|---|
| LMArena Expert | — | 1460 |
Multimodal Not comparable
Mercury: —, MiMo-V2.5: 39.8 (#54)
| Benchmark | Mercury | MiMo-V2.5 |
|---|---|---|
| LMArena Vision | — | 1247 |
Multilingual MiMo-V2.5 leads
Mercury: 41.6 (#206), MiMo-V2.5: 51.9 (#99)
| Benchmark | Mercury | MiMo-V2.5 |
|---|---|---|
| LMArena Non-English | 1260 | 1404 |
| 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
Mercury: 65.2 (#224), MiMo-V2.5: 75.5 (#60)
| Benchmark | Mercury | MiMo-V2.5 |
|---|---|---|
| LMArena Instruction Following | 1239 | 1434 |
Long Context MiMo-V2.5 leads
Mercury: 38.4 (#198), MiMo-V2.5: 44.2 (#73)
| Benchmark | Mercury | MiMo-V2.5 |
|---|---|---|
| LMArena Longer Query | 1266 | 1445 |
Writing & Preference MiMo-V2.5 leads
Mercury: 46.2 (#221), MiMo-V2.5: 61.6 (#86)
| Benchmark | Mercury | MiMo-V2.5 |
|---|---|---|
| LMArena Text | 1282 | 1428 |
| LMArena Creative Writing | 1191 | 1393 |
| LMArena Multi-Turn | 1282 | 1445 |
Frequently asked questions
Is Mercury better than MiMo-V2.5?
MiMo-V2.5 is the stronger model overall, scoring 43.4 to 37.6 on the Noometry Index.
Is Mercury or MiMo-V2.5 better for coding?
MiMo-V2.5 scores higher on coding benchmarks: 43.9 versus 38.7 in the Noometry coding category.
How many benchmarks do Mercury and MiMo-V2.5 share?
8 benchmarks have published results for both models. Mercury has 9 scored results on Noometry and MiMo-V2.5 has 23.