Model comparison
Kimi K2 Thinking Turbo vs Muse Spark 1.3
Muse Spark 1.3 is the stronger model overall, scoring 54.8 to 45.8 on the Noometry Index.
Last verified . 20 shared benchmarks.
MetaSummary
- They share 20 benchmarks with published results for both. Kimi K2 Thinking Turbo scores higher in 1 category and Muse Spark 1.3 in 7 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in math, where Muse Spark 1.3 leads 73.1 to 47.4.
- The biggest single-benchmark swing is Chess Puzzles: 20% for Kimi K2 Thinking Turbo and 38% for Muse Spark 1.3.
- Kimi K2 Thinking Turbo has downloadable open weights; the other is API-only.
Side by side
| Kimi K2 Thinking Turbo | Muse Spark 1.3 | |
|---|---|---|
| Provider | Moonshot AI | Meta |
| Noometry Index | 45.8 | 54.8 |
| Released | 2025-11-06 | 2026-09-02 |
| Weights | Open | Proprietary |
| Context window | — | 1.05M |
| Max output | — | 131K |
| Input $ / M tokens | — | $1.25 |
| Output $ / M tokens | — | $4.25 |
| Results tracked | 21 | 37 |
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Category by category
Coding Muse Spark 1.3 leads
Kimi K2 Thinking Turbo: 38.4 (#178), Muse Spark 1.3: 56.6 (#21)
| Benchmark | Kimi K2 Thinking Turbo | Muse Spark 1.3 |
|---|---|---|
| LMArena WebDev | 1322 | 1657 |
| LMArena Coding | 1454 | 1514 |
| CursorBench | — | 41.6% |
| SciCode | — | 59.7% |
Agentic & Tool Use Not comparable
Kimi K2 Thinking Turbo: —, Muse Spark 1.3: 38.6 (#30)
| Benchmark | Kimi K2 Thinking Turbo | Muse Spark 1.3 |
|---|---|---|
| APEX-Agents | — | 57.8% |
| GDP.pdf | — | 27.6% |
Reasoning Muse Spark 1.3 leads
Kimi K2 Thinking Turbo: 32.5 (#75), Muse Spark 1.3: 54.0 (#27)
| Benchmark | Kimi K2 Thinking Turbo | Muse Spark 1.3 |
|---|---|---|
| Chess Puzzles | 20% | 38% |
| LMArena Hard Prompts | 1428 | 1503 |
| NYT Connections (extended) | — | 85.1% |
| CritPt | — | 26% |
| 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
Kimi K2 Thinking Turbo: 47.4 (#68), Muse Spark 1.3: 73.1 (#21)
| Benchmark | Kimi K2 Thinking Turbo | Muse Spark 1.3 |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 83.1% | 99.2% |
| LMArena Math | 1429 | 1494 |
| FrontierMath (Tiers 1-3) | — | 74.4% |
| FrontierMath Tier 4 | — | 46.3% |
| ProofBench | — | 58% |
Knowledge Kimi K2 Thinking Turbo leads
Kimi K2 Thinking Turbo: 50.9 (#69), Muse Spark 1.3: 42.6 (#95)
| Benchmark | Kimi K2 Thinking Turbo | Muse Spark 1.3 |
|---|---|---|
| LMArena Expert | 1439 | 1516 |
| GPQA Diamond | 84.2% | — |
Multimodal Not comparable
Kimi K2 Thinking Turbo: —, Muse Spark 1.3: 43.7 (#22)
| Benchmark | Kimi K2 Thinking Turbo | Muse Spark 1.3 |
|---|---|---|
| LMArena Vision | — | 1309 |
| LMArena Document | — | 1471 |
Multilingual Muse Spark 1.3 leads
Kimi K2 Thinking Turbo: 51.4 (#109), Muse Spark 1.3: 57.4 (#8)
| Benchmark | Kimi K2 Thinking Turbo | Muse Spark 1.3 |
|---|---|---|
| LMArena Non-English | 1398 | 1481 |
| LMArena Chinese | 1456 | 1529 |
| LMArena French | 1425 | 1524 |
| LMArena German | 1390 | 1515 |
| LMArena Japanese | 1357 | 1474 |
| LMArena Korean | 1330 | 1501 |
| LMArena Russian | 1391 | 1490 |
| LMArena Spanish | 1406 | 1490 |
Instruction Following Muse Spark 1.3 leads
Kimi K2 Thinking Turbo: 74.0 (#109), Muse Spark 1.3: 77.5 (#22)
| Benchmark | Kimi K2 Thinking Turbo | Muse Spark 1.3 |
|---|---|---|
| LMArena Instruction Following | 1403 | 1477 |
Long Context Muse Spark 1.3 leads
Kimi K2 Thinking Turbo: 43.2 (#102), Muse Spark 1.3: 45.6 (#32)
| Benchmark | Kimi K2 Thinking Turbo | Muse Spark 1.3 |
|---|---|---|
| LMArena Longer Query | 1415 | 1488 |
Writing & Preference Muse Spark 1.3 leads
Kimi K2 Thinking Turbo: 60.0 (#104), Muse Spark 1.3: 73.6 (#9)
| Benchmark | Kimi K2 Thinking Turbo | Muse Spark 1.3 |
|---|---|---|
| LMArena Text | 1415 | 1490 |
| LMArena Creative Writing | 1374 | 1455 |
| LMArena Multi-Turn | 1414 | 1482 |
| EQ-Bench Creative Writing | — | 1906 |
Frequently asked questions
Is Kimi K2 Thinking Turbo better than Muse Spark 1.3?
Muse Spark 1.3 is the stronger model overall, scoring 54.8 to 45.8 on the Noometry Index.
Is Kimi K2 Thinking Turbo or Muse Spark 1.3 better for coding?
Muse Spark 1.3 scores higher on coding benchmarks: 56.6 versus 38.4 in the Noometry coding category.
How many benchmarks do Kimi K2 Thinking Turbo and Muse Spark 1.3 share?
20 benchmarks have published results for both models. Kimi K2 Thinking Turbo has 21 scored results on Noometry and Muse Spark 1.3 has 37.