Model comparison
Inkling-Small vs Muse Spark
Muse Spark is the stronger model overall, scoring 50.6 to 46.5 on the Noometry Index.
Last verified . 23 shared benchmarks.
MetaSummary
- They share 23 benchmarks with published results for both. Inkling-Small scores higher in 1 category and Muse Spark in 8 categories; 9 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where Muse Spark leads 65.7 to 48.2.
- The biggest single-benchmark swing is ProofBench: 6% for Inkling-Small and 17% for Muse Spark.
- Inkling-Small has downloadable open weights; the other is API-only.
Side by side
| Inkling-Small | Muse Spark | |
|---|---|---|
| Provider | Thinking Machines Lab | Meta |
| Noometry Index | 46.5 | 50.6 |
| Released | 2026-07-15 | 2026-04-08 |
| Weights | Open | Proprietary |
| Context window | 524K | — |
| Max output | 1.05M | — |
| Input $ / M tokens | $0.45 | — |
| Output $ / M tokens | $1.20 | — |
| Results tracked | 33 | 27 |
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Category by category
Coding Muse Spark leads
Inkling-Small: 43.6 (#85), Muse Spark: 46.2 (#69)
| Benchmark | Inkling-Small | Muse Spark |
|---|---|---|
| SciCode | 48.7% | 51.5% |
| LMArena Coding | 1451 | 1481 |
| LMArena WebDev | 1409 | — |
Reasoning Inkling-Small leads
Inkling-Small: 38.6 (#63), Muse Spark: 35.9 (#67)
| Benchmark | Inkling-Small | Muse Spark |
|---|---|---|
| CritPt | 8.3% | 11.3% |
| LMArena Hard Prompts | 1423 | 1474 |
| Epoch Capabilities Index | 150.15 | 152.04 |
| ARC-AGI-2 | 40.1% | — |
| ARC-AGI-1 | 84% | — |
| Chess Puzzles | 18% | — |
| Mystery Game Puzzles | 6% | — |
Math Muse Spark leads
Inkling-Small: 45.1 (#77), Muse Spark: 47.8 (#66)
| Benchmark | Inkling-Small | Muse Spark |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 90% | 88.9% |
| ProofBench | 6% | 17% |
| LMArena Math | 1459 | 1455 |
| FrontierMath (Tiers 1-3) | 46.3% | — |
| FrontierMath Tier 4 | 17.1% | — |
| FrontierMath (Feb 2025 set) | — | 39% |
| FrontierMath Tier 4 (v1) | — | 14.6% |
Knowledge Muse Spark leads
Inkling-Small: 48.2 (#77), Muse Spark: 65.7 (#13)
| Benchmark | Inkling-Small | Muse Spark |
|---|---|---|
| GPQA Diamond | 88.5% | 89.8% |
| LMArena Expert | 1442 | 1457 |
| Humanity's Last Exam | — | 40.6% |
| SimpleQA Verified | 19.1% | — |
Multimodal Muse Spark leads
Inkling-Small: 39.1 (#62), Muse Spark: 43.4 (#24)
| Benchmark | Inkling-Small | Muse Spark |
|---|---|---|
| LMArena Vision | 1235 | 1306 |
| LMArena Document | — | 1444 |
Multilingual Muse Spark leads
Inkling-Small: 51.7 (#104), Muse Spark: 56.1 (#24)
| Benchmark | Inkling-Small | Muse Spark |
|---|---|---|
| LMArena Non-English | 1402 | 1464 |
| LMArena Chinese | 1465 | 1509 |
| LMArena French | 1436 | 1497 |
| LMArena German | 1405 | 1497 |
| LMArena Korean | 1363 | 1459 |
| LMArena Russian | 1391 | 1466 |
| LMArena Spanish | 1428 | 1472 |
| LMArena Japanese | 1405 | — |
Instruction Following Muse Spark leads
Inkling-Small: 73.8 (#114), Muse Spark: 75.9 (#51)
| Benchmark | Inkling-Small | Muse Spark |
|---|---|---|
| LMArena Instruction Following | 1399 | 1442 |
Long Context Muse Spark leads
Inkling-Small: 42.7 (#118), Muse Spark: 44.4 (#69)
| Benchmark | Inkling-Small | Muse Spark |
|---|---|---|
| LMArena Longer Query | 1401 | 1451 |
Writing & Preference Muse Spark leads
Inkling-Small: 59.6 (#107), Muse Spark: 66.0 (#39)
| Benchmark | Inkling-Small | Muse Spark |
|---|---|---|
| LMArena Text | 1414 | 1474 |
| LMArena Creative Writing | 1331 | 1459 |
| LMArena Multi-Turn | 1418 | 1477 |
| EQ-Bench Creative Writing | 1491 | — |
Frequently asked questions
Is Inkling-Small better than Muse Spark?
Muse Spark is the stronger model overall, scoring 50.6 to 46.5 on the Noometry Index.
Is Inkling-Small or Muse Spark better for coding?
Muse Spark scores higher on coding benchmarks: 46.2 versus 43.6 in the Noometry coding category.
How many benchmarks do Inkling-Small and Muse Spark share?
23 benchmarks have published results for both models. Inkling-Small has 33 scored results on Noometry and Muse Spark has 27.