gemini-2.5-flash-preview-09-2025 vs Kimi-K2
Kimi-K2 is cheaper on output tokens, while gemini-2.5-flash-preview-09-2025 offers a larger context window. Choose gemini-2.5-flash-preview-09-2025 or Kimi-K2 based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | gemini-2.5-flash-preview-09-2025 | Kimi-K2 |
|---|---|---|
| Provider | 302.AI | iFlow |
| Input / 1M tokens | $0.30 | $0.00 |
| Output / 1M tokens | $2.50 | $0.00 |
| Context window | 1M | 128K |
| Parameters | — | 1T |
| Open weights | No | No |
| Released | Sep 2025 | Dec 2024 |
| LMArena (Chatbot Arena) Elo score | 1406 | — |
| LMArena Vision Elo score | 1253 | — |
FAQ
Is gemini-2.5-flash-preview-09-2025 or Kimi-K2 cheaper?
Kimi-K2 is cheaper on output tokens ($0.00 vs $2.50 per 1M).
Which has the larger context window, gemini-2.5-flash-preview-09-2025 or Kimi-K2?
gemini-2.5-flash-preview-09-2025 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.