Gemini 3.8 Flash vs DeepSeek V4 Pro Fast
Gemini 3.8 Flash is cheaper on output tokens. Choose Gemini 3.8 Flash or DeepSeek V4 Pro Fast based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | Gemini 3.8 Flash | DeepSeek V4 Pro Fast |
|---|---|---|
| Provider | Wally | |
| Input / 1M tokens | $0.75 | $1.91 |
| Output / 1M tokens | $3.75 | $3.83 |
| Context window | 1M | 1M |
| Parameters | — | — |
| Open weights | — | Yes |
| Released | — | Apr 2026 |
| LMArena (Chatbot Arena) Elo score | 1498 | — |
| LMArena WebDev Elo score | 1583 | — |
| LMArena Vision Elo score | 1315 | — |
| GPQA Diamond score | 95.4 | — |
| Epoch Capabilities Index score | 158 | — |
FAQ
Is Gemini 3.8 Flash or DeepSeek V4 Pro Fast cheaper?
Gemini 3.8 Flash is cheaper on output tokens ($3.75 vs $3.83 per 1M).
Which has the larger context window, Gemini 3.8 Flash or DeepSeek V4 Pro Fast?
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.