gemini-2.5-flash-preview-09-2025 vs DeepSeek V4.1 Flash 1017 Fast
DeepSeek V4.1 Flash 1017 Fast is cheaper on output tokens, while DeepSeek V4.1 Flash 1017 Fast offers a larger context window. Choose gemini-2.5-flash-preview-09-2025 or DeepSeek V4.1 Flash 1017 Fast 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 | DeepSeek V4.1 Flash 1017 Fast |
|---|---|---|
| Provider | 302.AI | Vercel AI Gateway |
| Input / 1M tokens | $0.30 | $0.60 |
| Output / 1M tokens | $2.50 | $2.40 |
| Context window | 1M | 1M |
| Parameters | — | — |
| Open weights | No | Yes |
| Released | Sep 2025 | Oct 2026 |
| LMArena (Chatbot Arena) Elo score | 1406 | — |
| LMArena Vision Elo score | 1253 | — |
FAQ
Is gemini-2.5-flash-preview-09-2025 or DeepSeek V4.1 Flash 1017 Fast cheaper?
DeepSeek V4.1 Flash 1017 Fast is cheaper on output tokens ($2.40 vs $2.50 per 1M).
Which has the larger context window, gemini-2.5-flash-preview-09-2025 or DeepSeek V4.1 Flash 1017 Fast?
DeepSeek V4.1 Flash 1017 Fast 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.