Model comparison
Kimi K2 (Jul 2025) vs Muse Glimmer
Kimi K2 (Jul 2025) and Muse Glimmer score almost the same on the Noometry Index (41.2 vs 41.7), so choose on price, context window or the category you care about most.
Last verified . 12 shared benchmarks.
MetaSummary
- They share 12 benchmarks with published results for both. Kimi K2 (Jul 2025) scores higher in 3 categories and Muse Glimmer in 5 categories; 6 gaps are clear of the uncertainty.
- The widest gap is in writing & preference, where Kimi K2 (Jul 2025) leads 62.3 to 57.5.
Side by side
| Kimi K2 (Jul 2025) | Muse Glimmer | |
|---|---|---|
| Provider | Moonshot AI | Meta |
| Noometry Index | 41.2 | 41.7 |
| Released | 2025-07-12 | 2026-08-10 |
| Weights | Open | Open |
| Context window | 262K | — |
| Max output | 262K | — |
| Input $ / M tokens | $0.57 | — |
| Output $ / M tokens | $2.30 | — |
| Results tracked | 42 | 15 |
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Category by category
Coding Kimi K2 (Jul 2025) leads
Kimi K2 (Jul 2025): 42.4 (#102), Muse Glimmer: 40.4 (#142)
| Benchmark | Kimi K2 (Jul 2025) | Muse Glimmer |
|---|---|---|
| LMArena Coding | 1399 | 1416 |
| SWE-bench Verified (bash only) | 63.4% | — |
| Aider Polyglot | 59.1% | — |
| LMArena WebDev | — | 1355 |
| SciCode | — | 44.9% |
| GSO | 4.9% | — |
| WeirdML | 42.8% | — |
| ALE-Bench | 597.5 | — |
Agentic & Tool Use Not comparable
Kimi K2 (Jul 2025): 32.4 (#64), Muse Glimmer: —
| Benchmark | Kimi K2 (Jul 2025) | Muse Glimmer |
|---|---|---|
| Terminal-Bench | 35.7% | — |
| Berkeley Function Calling Leaderboard | 59.1% | — |
| METR Time Horizons | 59.2% | — |
Reasoning Muse Glimmer leads
Kimi K2 (Jul 2025): 23.3 (#179), Muse Glimmer: 25.7 (#144)
| Benchmark | Kimi K2 (Jul 2025) | Muse Glimmer |
|---|---|---|
| LMArena Hard Prompts | 1384 | 1396 |
| SimpleBench | 26.3% | — |
| Kagi LLM Benchmark | 64.4% | — |
| CritPt | — | 2.6% |
| Epoch Capabilities Index | 146.01 | — |
| ForecastBench | 60.2 | — |
Math Kimi K2 (Jul 2025) leads
Kimi K2 (Jul 2025): 42.7 (#83), Muse Glimmer: 38.8 (#125)
| Benchmark | Kimi K2 (Jul 2025) | Muse Glimmer |
|---|---|---|
| LMArena Math | 1397 | 1417 |
| Omni-MATH | 65.4% | — |
| FrontierMath (Feb 2025 set) | 21.4% | — |
| FrontierMath Tier 4 (v1) | 0% | — |
Knowledge Muse Glimmer leads
Kimi K2 (Jul 2025): 37.3 (#157), Muse Glimmer: 38.5 (#143)
| Benchmark | Kimi K2 (Jul 2025) | Muse Glimmer |
|---|---|---|
| LMArena Expert | 1365 | 1386 |
| MMLU-Pro | 81.9% | — |
| Confabulations | 20.4% | — |
| Vectara Hallucination Rate | 17.9% | — |
| GPQA (HELM) | 65.3% | — |
Multilingual Too close to call
Kimi K2 (Jul 2025): 49.6 (#130), Muse Glimmer: 50.5 (#122)
| Benchmark | Kimi K2 (Jul 2025) | Muse Glimmer |
|---|---|---|
| LMArena Non-English | 1372 | 1384 |
| LMArena Chinese | 1415 | 1412 |
| LMArena Russian | 1385 | 1390 |
| LMArena French | 1379 | — |
| LMArena German | 1387 | — |
| LMArena Japanese | 1349 | — |
| LMArena Korean | 1325 | — |
| LMArena Spanish | 1386 | — |
Instruction Following Muse Glimmer leads
Kimi K2 (Jul 2025): 71.1 (#156), Muse Glimmer: 72.6 (#135)
| Benchmark | Kimi K2 (Jul 2025) | Muse Glimmer |
|---|---|---|
| LMArena Instruction Following | 1348 | 1375 |
| IFEval | 85% | — |
Long Context Too close to call
Kimi K2 (Jul 2025): 41.2 (#145), Muse Glimmer: 42.1 (#129)
| Benchmark | Kimi K2 (Jul 2025) | Muse Glimmer |
|---|---|---|
| LMArena Longer Query | 1353 | 1382 |
| Fiction.LiveBench | 66.7% | — |
| CL-bench | 17.6% | — |
Writing & Preference Kimi K2 (Jul 2025) leads
Kimi K2 (Jul 2025): 62.3 (#78), Muse Glimmer: 57.5 (#126)
| Benchmark | Kimi K2 (Jul 2025) | Muse Glimmer |
|---|---|---|
| LMArena Text | 1380 | 1389 |
| LMArena Creative Writing | 1350 | 1339 |
| LMArena Multi-Turn | 1371 | 1399 |
| Short-Story Creative Writing | 85.6% | — |
| EQ-Bench Creative Writing | 1666 | — |
| WildBench | 86.2% | — |
Frequently asked questions
Is Kimi K2 (Jul 2025) better than Muse Glimmer?
Kimi K2 (Jul 2025) and Muse Glimmer score almost the same on the Noometry Index (41.2 vs 41.7), so choose on price, context window or the category you care about most.
Is Kimi K2 (Jul 2025) or Muse Glimmer better for coding?
Kimi K2 (Jul 2025) scores higher on coding benchmarks: 42.4 versus 40.4 in the Noometry coding category.
How many benchmarks do Kimi K2 (Jul 2025) and Muse Glimmer share?
12 benchmarks have published results for both models. Kimi K2 (Jul 2025) has 42 scored results on Noometry and Muse Glimmer has 15.