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Step 5 Preview
Muse Spark
Muse Spark is a proprietary model from Meta. It ranks #26 of 351 on the LMArena text leaderboard with a rating of 1474.
- Developer
- Meta
- Released
- Apr 9, 2026
- Context window
- —
- Price in / out, per 1M tokens
- —
- Weights
- Proprietary
- Inputs
- —
- Reasoning
- —
- Tool use
- —
The rating LMArena published at each update since Apr 9, 2026. Ratings move as votes come in and new models join.
Benchmarks
| Benchmark | Score bar | Accuracy | Rank | Cost / test |
|---|---|---|---|---|
| SWE-benchCoding | 74.40% | 45 / 85 | N/A | |
| Vibe Code BenchCoding | 19.67% | 84 / 115 | N/A | |
| MedCodeMedicine | 51.31% | 16 / 107 | N/A | |
| GPQA DiamondReasoning | 89.65% | 28 / 138 | N/A | |
| MMLU-ProReasoning | 87.32% | 30 / 138 | N/A | |
| AIMEReasoning | 96.88% | 3 / 96 | N/A | |
| MMMUReasoning | 87.40% | 16 / 93 | N/A |
Vals AI, as of Oct 24, 2026.
LMArena, by category
| Leaderboard | Rating | Rank | Votes |
|---|---|---|---|
| TextLMArena | 1474 | 26 / 351 | 14.1K |
| CodingLMArena | 1481 | 56 / 346 | 3.9K |
| MathLMArena | 1456 | 65 / 339 | 891 |
| Creative writingLMArena | 1459 | 26 / 349 | 2K |
| Instruction followingLMArena | 1443 | 58 / 351 | 4.7K |
| Hard promptsLMArena | 1474 | 41 / 351 | 9.2K |
| Multi-turnLMArena | 1478 | 26 / 349 | 2.3K |
| Long queriesLMArena | 1451 | 62 / 330 | 5.6K |
| ExpertLMArena | 1457 | 75 / 305 | 1.4K |
| Legal and governmentIndustries | 1485 | 25 / 325 | 1K |
| Medicine and healthcareIndustries | 1476 | 30 / 325 | 997 |
| Business and financeIndustries | 1462 | 30 / 344 | 2.9K |
| ChineseLanguages | 1508 | 42 / 328 | 976 |
| SpanishLanguages | 1470 | 29 / 249 | 519 |
| GermanLanguages | 1498 | 9 / 261 | 237 |
| FrenchLanguages | 1496 | 16 / 252 | 479 |
| VisionLMArena | 1306 | 15 / 146 | 5.9K |
LMArena, CC BY 4.0, as of Oct 22, 2026. Where a model is rated at several effort levels, its best is shown.
Compare Muse Spark
Meta
Meta’s AI research publishes the Llama family, among the most downloaded open-weight models. Founded 2013 (FAIR), based in Menlo Park. ai.meta.com
Questions
Who makes Muse Spark?
Muse Spark is made by Meta, founded 2013 (FAIR) and based in Menlo Park.
How does Muse Spark rank?
#26 of 351 on LMArena’s text leaderboard, rated 1474 (95% interval 1469–1480) from 14,147 votes, as of Oct 22, 2026.
Is Muse Spark open source?
No. Muse Spark is proprietary and served through its provider’s API.