Moonshot AI Kimi K1.5 vs Moonshot AI Kimi Linear — side-by-side specs.
Moonshot AI Kimi K1.5 | Moonshot AI Kimi Linear | |
|---|---|---|
| Overview | ||
| Company | Moonshot AI | Moonshot AI |
| Release date | Jan 20 2025 | Oct 2025 |
| Model type | — | — |
| Open source | No | Yes |
| Specifications | ||
Parameters | — | 48B |
Context window | 128k | — |
| Benchmarks | ||
| Timeline | ||
| Release gap | Kimi K1.5 shipped 254 days before Kimi Linear | |
Kimi K1.5 and Kimi Linear don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Kimi K1.5 shipped 254 days before Kimi Linear, so benchmark comparisons should account for the intervening progress.
Kimi Linear is an open-source / open-weight model; Kimi K1.5 is proprietary.
Direct benchmark comparisons are unavailable — Kimi K1.5 and Kimi Linear don't publish scores on any of the same benchmarks.