Model comparison
MiMo-V2.5-Pro vs Sonar
MiMo-V2.5-Pro is the stronger model overall, scoring 45.2 to 38.5 on the Noometry Index.
Last verified . 0 shared benchmarks.
PerplexitySummary
- The widest gap is in writing & preference, where MiMo-V2.5-Pro leads 65.3 to 52.6.
- MiMo-V2.5-Pro is cheaper at $0.43 / $0.87 per million input/output tokens, against $1 / $1 for Sonar.
- MiMo-V2.5-Pro accepts more context: 1.05M tokens versus 128K.
- MiMo-V2.5-Pro has downloadable open weights; the other is API-only.
Side by side
| MiMo-V2.5-Pro | Sonar | |
|---|---|---|
| Provider | Xiaomi | Perplexity |
| Noometry Index | 45.2 | 38.5 |
| Released | 2026-04-22 | 2024-01-01 |
| Weights | Open | Proprietary |
| Context window | 1.05M | 128K |
| Max output | 131K | 4K |
| Input $ / M tokens | $0.43 | $1 |
| Output $ / M tokens | $0.87 | $1 |
| Results tracked | 27 | 7 |
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Category by category
Coding MiMo-V2.5-Pro leads
MiMo-V2.5-Pro: 47.4 (#60), Sonar: 35.7 (#221)
| Benchmark | MiMo-V2.5-Pro | Sonar |
|---|---|---|
| LMArena WebDev | 1479 | — |
| SciCode | 50.2% | — |
| LiveBench Coding | — | 35.1% |
| LMArena Coding | 1503 | — |
| ALE-Bench | 899.8 | — |
Reasoning MiMo-V2.5-Pro leads
MiMo-V2.5-Pro: 26.8 (#130), Sonar: 21.1 (#227)
| Benchmark | MiMo-V2.5-Pro | Sonar |
|---|---|---|
| NYT Connections (extended) | 34.4% | — |
| CritPt | 4% | — |
| LiveBench Reasoning | — | 46.3% |
| LMArena Hard Prompts | 1488 | — |
| DTBench | 84.5% | — |
| LiveBench Data Analysis | — | 37.9% |
| LMCA | 29.5% | — |
| LiveBench | — | 46.9% |
Math MiMo-V2.5-Pro leads
MiMo-V2.5-Pro: 40.0 (#96), Sonar: 33.7 (#200)
| Benchmark | MiMo-V2.5-Pro | Sonar |
|---|---|---|
| ProofBench | 22% | — |
| LiveBench Math | — | 41.6% |
| LMArena Math | 1481 | — |
Knowledge Not comparable
MiMo-V2.5-Pro: 42.2 (#98), Sonar: —
| Benchmark | MiMo-V2.5-Pro | Sonar |
|---|---|---|
| LMArena Expert | 1503 | — |
Multilingual Not comparable
MiMo-V2.5-Pro: 55.1 (#34), Sonar: —
| Benchmark | MiMo-V2.5-Pro | Sonar |
|---|---|---|
| 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 MiMo-V2.5-Pro leads
MiMo-V2.5-Pro: 77.5 (#21), Sonar: 71.4 (#150)
| Benchmark | MiMo-V2.5-Pro | Sonar |
|---|---|---|
| LiveBench Instruction Following | — | 76.2% |
| LMArena Instruction Following | 1477 | — |
Long Context Not comparable
MiMo-V2.5-Pro: 45.4 (#37), Sonar: —
| Benchmark | MiMo-V2.5-Pro | Sonar |
|---|---|---|
| LMArena Longer Query | 1483 | — |
Writing & Preference MiMo-V2.5-Pro leads
MiMo-V2.5-Pro: 65.3 (#49), Sonar: 52.6 (#167)
| Benchmark | MiMo-V2.5-Pro | Sonar |
|---|---|---|
| LMArena Text | 1465 | — |
| LMArena Creative Writing | 1440 | — |
| EQ-Bench Creative Writing | 1493 | — |
| EQ-Bench 4 | 1208 | — |
| LMArena Multi-Turn | 1477 | — |
| LiveBench Language | — | 44.1% |
Frequently asked questions
Is MiMo-V2.5-Pro better than Sonar?
MiMo-V2.5-Pro is the stronger model overall, scoring 45.2 to 38.5 on the Noometry Index.
Which is cheaper, MiMo-V2.5-Pro or Sonar?
MiMo-V2.5-Pro is cheaper. It lists at $0.43 per million input tokens and $0.87 per million output tokens; Sonar lists at $1 and $1.
Is MiMo-V2.5-Pro or Sonar better for coding?
MiMo-V2.5-Pro scores higher on coding benchmarks: 47.4 versus 35.7 in the Noometry coding category.
Which has the bigger context window?
MiMo-V2.5-Pro does, with 1.05M tokens against 128K.
How many benchmarks do MiMo-V2.5-Pro and Sonar share?
0 benchmarks have published results for both models. MiMo-V2.5-Pro has 27 scored results on Noometry and Sonar has 7.