Gemini 2.5 Flash vs Kimi K2.5
Both have similar output pricing, while Gemini 2.5 Flash offers a larger context window. Choose Gemini 2.5 Flash or Kimi K2.5 based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | Gemini 2.5 Flash | Kimi K2.5 |
|---|---|---|
| Provider | MoonshotAI | |
| Input / 1M tokens | $0.30 | $0.50 |
| Output / 1M tokens | $2.50 | $2.50 |
| Context window | 1M | 262K |
| Parameters | — | 1T |
| Open weights | No | Yes |
| Released | Jun 2025 | Jan 2026 |
| SWE-bench Verified score | 28.7 | 70.8 |
| LMArena (Chatbot Arena) Elo score | 1417 | 1445 |
| LMArena Vision Elo score | 1235 | 1269 |
| FrontierMath score | 4.8 | — |
| Epoch Capabilities Index score | 143 | 148 |
| LiveBench score | — | 69.2 |
| SWE-bench Multilingual score | — | 67.3 |
| LMArena WebDev Elo score | — | 1436 |
FAQ
Is Gemini 2.5 Flash or Kimi K2.5 cheaper?
Gemini 2.5 Flash and Kimi K2.5 have comparable output pricing.
Which has the larger context window, Gemini 2.5 Flash or Kimi K2.5?
Gemini 2.5 Flash has the larger context window (1M tokens).
Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.