Model comparison
Muse Spark vs Yi-Lightning
Muse Spark is the stronger model overall, scoring 50.3 to 36.5 on the Noometry Index.
Last verified . 16 shared benchmarks.
MetaSummary
- They share 16 benchmarks with published results for both. Muse Spark scores higher in 8 categories and Yi-Lightning in 0 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where Muse Spark leads 65.7 to 34.8.
Side by side
| Muse Spark | Yi-Lightning | |
|---|---|---|
| Provider | Meta | 01.AI |
| Noometry Index | 50.3 | 36.5 |
| Released | 2026-04-08 | 2024-12-02 |
| Weights | Proprietary | Proprietary |
| Context window | — | — |
| Max output | — | — |
| Input $ / M tokens | — | — |
| Output $ / M tokens | — | — |
| Results tracked | 27 | 18 |
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Category by category
Coding Muse Spark leads
Muse Spark: 45.6 (#65), Yi-Lightning: 27.0 (#315)
| Benchmark | Muse Spark | Yi-Lightning |
|---|---|---|
| LMArena Coding | 1482 | 1313 |
| Aider Polyglot | — | 12.9% |
| SciCode | 51.5% | — |
Reasoning Muse Spark leads
Muse Spark: 34.9 (#61), Yi-Lightning: 24.9 (#137)
| Benchmark | Muse Spark | Yi-Lightning |
|---|---|---|
| LMArena Hard Prompts | 1475 | 1302 |
| CritPt | 11.3% | — |
| Epoch Capabilities Index | 152.09 | — |
Math Muse Spark leads
Muse Spark: 46.8 (#57), Yi-Lightning: 33.5 (#173)
| Benchmark | Muse Spark | Yi-Lightning |
|---|---|---|
| LMArena Math | 1455 | 1300 |
| OTIS Mock AIME 2024-2025 | 88.9% | — |
| ProofBench | 17% | — |
| FrontierMath (Feb 2025 set) | 39% | — |
| FrontierMath Tier 4 (v1) | 14.6% | — |
Knowledge Muse Spark leads
Muse Spark: 65.7 (#12), Yi-Lightning: 34.8 (#182)
| Benchmark | Muse Spark | Yi-Lightning |
|---|---|---|
| LMArena Expert | 1458 | 1286 |
| GPQA Diamond | 89.8% | — |
| Humanity's Last Exam | 40.6% | — |
Multimodal Not comparable
Muse Spark: 42.7 (#23), Yi-Lightning: —
| Benchmark | Muse Spark | Yi-Lightning |
|---|---|---|
| LMArena Vision | 1306 | — |
| LMArena Document | 1444 | — |
Multilingual Muse Spark leads
Muse Spark: 56.3 (#23), Yi-Lightning: 42.4 (#191)
| Benchmark | Muse Spark | Yi-Lightning |
|---|---|---|
| LMArena Non-English | 1464 | 1269 |
| LMArena Chinese | 1507 | 1320 |
| LMArena French | 1497 | 1304 |
| LMArena German | 1497 | 1267 |
| LMArena Korean | 1457 | 1192 |
| LMArena Russian | 1467 | 1255 |
| LMArena Spanish | 1471 | 1315 |
| LMArena Japanese | — | 1228 |
Instruction Following Muse Spark leads
Muse Spark: 76.1 (#47), Yi-Lightning: 67.6 (#191)
| Benchmark | Muse Spark | Yi-Lightning |
|---|---|---|
| LMArena Instruction Following | 1443 | 1278 |
Long Context Muse Spark leads
Muse Spark: 44.4 (#65), Yi-Lightning: 39.4 (#176)
| Benchmark | Muse Spark | Yi-Lightning |
|---|---|---|
| LMArena Longer Query | 1451 | 1297 |
Writing & Preference Muse Spark leads
Muse Spark: 66.2 (#37), Yi-Lightning: 50.4 (#178)
| Benchmark | Muse Spark | Yi-Lightning |
|---|---|---|
| LMArena Text | 1474 | 1302 |
| LMArena Creative Writing | 1460 | 1280 |
| LMArena Multi-Turn | 1477 | 1311 |
Frequently asked questions
Is Muse Spark better than Yi-Lightning?
Muse Spark is the stronger model overall, scoring 50.3 to 36.5 on the Noometry Index.
Is Muse Spark or Yi-Lightning better for coding?
Muse Spark scores higher on coding benchmarks: 45.6 versus 27.0 in the Noometry coding category.
How many benchmarks do Muse Spark and Yi-Lightning share?
16 benchmarks have published results for both models. Muse Spark has 27 scored results on Noometry and Yi-Lightning has 18.