3 vs 0 benchmarks won
Meta Muse Spark | Moonshot AI Kimi K2 Thinking | |
|---|---|---|
| Overview | ||
| Company | Meta | Moonshot AI |
| Release date | Apr 8 2026 | Nov 6 2025 |
| Model type | — | — |
| Open source | No | Yes |
| Specifications | ||
Parameters | — | 1T |
Context window | — | 256k |
| Benchmarks | ||
Science reasoning GPQA Diamond | 89.5% | — |
Software engineering SWE-Bench Verified | 77.4% | 71.3% |
Multimodal understanding MMMU | 80.4% | — |
| Timeline | ||
| Release gap | Kimi K2 Thinking shipped 153 days before Muse Spark | |
Muse Spark leads Kimi K2 Thinking on 3 of the tracked benchmarks (GPQA Diamond, SWE-Bench Verified, MMMU). Kimi K2 Thinking shipped 153 days before Muse Spark, so benchmark comparisons should account for the intervening progress.
Kimi K2 Thinking is an open-source / open-weight model; Muse Spark is proprietary.
On SWE-Bench Verified, Muse Spark scores 77.4%, 6.1 points above Kimi K2 Thinking at 71.3%.