kimi-k2-0905-preview vs Kimi K2.5
Kimi K2.5 is cheaper on output tokens. Choose kimi-k2-0905-preview or Kimi K2.5 based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | kimi-k2-0905-preview | Kimi K2.5 |
|---|---|---|
| Provider | 302.AI | MoonshotAI |
| Input / 1M tokens | $0.63 | $0.50 |
| Output / 1M tokens | $2.53 | $2.50 |
| Context window | 262K | 262K |
| Parameters | — | 1T |
| Open weights | No | Yes |
| Released | Sep 2025 | Jan 2026 |
| SWE-bench Verified score | 71.2 | 70.8 |
| LMArena (Chatbot Arena) Elo score | 1380 | 1445 |
| LiveBench score | — | 69.2 |
| SWE-bench Multilingual score | — | 67.3 |
| Epoch Capabilities Index score | — | 148 |
| LMArena WebDev Elo score | — | 1436 |
| LMArena Vision Elo score | — | 1269 |
FAQ
Is kimi-k2-0905-preview or Kimi K2.5 cheaper?
Kimi K2.5 is cheaper on output tokens ($2.50 vs $2.53 per 1M).
Which has the larger context window, kimi-k2-0905-preview or Kimi K2.5?
Both models offer a similar context window.
Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.