Model comparison
MiMo-V2.5 vs Muse Spark 1.3
Muse Spark 1.3 is the stronger model overall, scoring 54.8 to 43.4 on the Noometry Index. MiMo-V2.5 costs 11× less per token, which makes it the better buy when Muse Spark 1.3's lead doesn't matter for your workload.
Last verified . 22 shared benchmarks.
MetaSummary
- They share 22 benchmarks with published results for both. MiMo-V2.5 scores higher in 0 categories and Muse Spark 1.3 in 9 categories; 9 gaps are clear of the uncertainty.
- The widest gap is in math, where Muse Spark 1.3 leads 73.1 to 36.8.
- The biggest single-benchmark swing is ProofBench: 16% for MiMo-V2.5 and 58% for Muse Spark 1.3.
- MiMo-V2.5 is cheaper at $0.14 / $0.28 per million input/output tokens, against $1.25 / $4.25 for Muse Spark 1.3.
- MiMo-V2.5 has downloadable open weights; the other is API-only.
Side by side
| MiMo-V2.5 | Muse Spark 1.3 | |
|---|---|---|
| Provider | Xiaomi | Meta |
| Noometry Index | 43.4 | 54.8 |
| Released | 2026-04-22 | 2026-09-02 |
| Weights | Open | Proprietary |
| Context window | 1.05M | 1.05M |
| Max output | 131K | 131K |
| Input $ / M tokens | $0.14 | $1.25 |
| Output $ / M tokens | $0.28 | $4.25 |
| Results tracked | 23 | 37 |
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Category by category
Coding Muse Spark 1.3 leads
MiMo-V2.5: 43.9 (#81), Muse Spark 1.3: 56.6 (#21)
| Benchmark | MiMo-V2.5 | Muse Spark 1.3 |
|---|---|---|
| LMArena WebDev | 1438 | 1657 |
| SciCode | 43.1% | 59.7% |
| LMArena Coding | 1469 | 1514 |
| CursorBench | — | 41.6% |
| ALE-Bench | 513.95 | — |
Agentic & Tool Use Not comparable
MiMo-V2.5: —, Muse Spark 1.3: 38.6 (#30)
| Benchmark | MiMo-V2.5 | Muse Spark 1.3 |
|---|---|---|
| APEX-Agents | — | 57.8% |
| GDP.pdf | — | 27.6% |
Reasoning Muse Spark 1.3 leads
MiMo-V2.5: 28.6 (#101), Muse Spark 1.3: 54.0 (#27)
| Benchmark | MiMo-V2.5 | Muse Spark 1.3 |
|---|---|---|
| CritPt | 3.7% | 26% |
| LMArena Hard Prompts | 1450 | 1503 |
| NYT Connections (extended) | — | 85.1% |
| Chess Puzzles | — | 38% |
| Mystery Game Puzzles | — | 25% |
| DTBench | — | 96.5% |
| LMCA | — | 53.9% |
| Bench to the Future 3 | — | 0.14 |
| Epoch Capabilities Index | — | 156.75 |
Math Muse Spark 1.3 leads
MiMo-V2.5: 36.8 (#163), Muse Spark 1.3: 73.1 (#21)
| Benchmark | MiMo-V2.5 | Muse Spark 1.3 |
|---|---|---|
| ProofBench | 16% | 58% |
| LMArena Math | 1436 | 1494 |
| FrontierMath (Tiers 1-3) | — | 74.4% |
| FrontierMath Tier 4 | — | 46.3% |
| OTIS Mock AIME 2024-2025 | — | 99.2% |
Knowledge Muse Spark 1.3 leads
MiMo-V2.5: 40.8 (#115), Muse Spark 1.3: 42.6 (#95)
| Benchmark | MiMo-V2.5 | Muse Spark 1.3 |
|---|---|---|
| LMArena Expert | 1460 | 1516 |
Multimodal Muse Spark 1.3 leads
MiMo-V2.5: 39.8 (#54), Muse Spark 1.3: 43.7 (#22)
| Benchmark | MiMo-V2.5 | Muse Spark 1.3 |
|---|---|---|
| LMArena Vision | 1247 | 1309 |
| LMArena Document | — | 1471 |
Multilingual Muse Spark 1.3 leads
MiMo-V2.5: 51.9 (#99), Muse Spark 1.3: 57.4 (#8)
| Benchmark | MiMo-V2.5 | Muse Spark 1.3 |
|---|---|---|
| LMArena Non-English | 1404 | 1481 |
| LMArena Chinese | 1468 | 1529 |
| LMArena French | 1447 | 1524 |
| LMArena German | 1421 | 1515 |
| LMArena Japanese | 1306 | 1474 |
| LMArena Korean | 1363 | 1501 |
| LMArena Russian | 1395 | 1490 |
| LMArena Spanish | 1416 | 1490 |
Instruction Following Muse Spark 1.3 leads
MiMo-V2.5: 75.5 (#60), Muse Spark 1.3: 77.5 (#22)
| Benchmark | MiMo-V2.5 | Muse Spark 1.3 |
|---|---|---|
| LMArena Instruction Following | 1434 | 1477 |
Long Context Muse Spark 1.3 leads
MiMo-V2.5: 44.2 (#73), Muse Spark 1.3: 45.6 (#32)
| Benchmark | MiMo-V2.5 | Muse Spark 1.3 |
|---|---|---|
| LMArena Longer Query | 1445 | 1488 |
Writing & Preference Muse Spark 1.3 leads
MiMo-V2.5: 61.6 (#86), Muse Spark 1.3: 73.6 (#9)
| Benchmark | MiMo-V2.5 | Muse Spark 1.3 |
|---|---|---|
| LMArena Text | 1428 | 1490 |
| LMArena Creative Writing | 1393 | 1455 |
| LMArena Multi-Turn | 1445 | 1482 |
| EQ-Bench Creative Writing | — | 1906 |
Frequently asked questions
Is MiMo-V2.5 better than Muse Spark 1.3?
Muse Spark 1.3 is the stronger model overall, scoring 54.8 to 43.4 on the Noometry Index. MiMo-V2.5 costs 11× less per token, which makes it the better buy when Muse Spark 1.3's lead doesn't matter for your workload.
Which is cheaper, MiMo-V2.5 or Muse Spark 1.3?
MiMo-V2.5 is cheaper. It lists at $0.14 per million input tokens and $0.28 per million output tokens; Muse Spark 1.3 lists at $1.25 and $4.25.
Is MiMo-V2.5 or Muse Spark 1.3 better for coding?
Muse Spark 1.3 scores higher on coding benchmarks: 56.6 versus 43.9 in the Noometry coding category.
Which has the bigger context window?
Both accept 1.05M tokens.
How many benchmarks do MiMo-V2.5 and Muse Spark 1.3 share?
22 benchmarks have published results for both models. MiMo-V2.5 has 23 scored results on Noometry and Muse Spark 1.3 has 37.