Gemini vs DeepSeek, compared on real cost. We ran every model from both on the same example workload (chatbot, 100k requests/mo, 70% cached) so the prices line up directly. The lowest-cost model across both is DeepSeek V4 Flash ($17.19/mo). Full table and verdict below.
At the budget end, DeepSeek is the lower-cost option on this workload: Gemini's cheapest (Gemini 3.1 Flash-Lite) is $63.5/mo vs DeepSeek's (DeepSeek V4 Flash) $17.19/mo.
At the top end, Gemini's flagship Gemini 3.1 Pro Preview runs $508/mo vs DeepSeek's DeepSeek V4 Pro at $52.71/mo. Largest verified context window — Gemini: 1M tokens; DeepSeek: 1M tokens.
Both are priced by the same engine, so compare your own workload in the calculator — the cheaper choice flips with your token mix and cache share.
Every model from both providers on one example workload (100k requests/mo, 2,000 input / 300 output tokens, 70% cached), cheapest first. The single lowest-cost model is highlighted.
| Model | $ input /1M | $ output /1M | $ cached /1M | ≈ $/mo * |
|---|---|---|---|---|
| DeepSeek V4 FlashBUDGETDeepSeek | $0.14 | $0.28 | $0.0028 | $17.19 |
| DeepSeek V4 ProMIDDeepSeek | $0.435 | $0.87 | $0.003625 | $52.71 |
| Gemini 3.1 Flash-LiteBUDGETGoogle (Gemini) | $0.25 | $1.50 | $0.025 | $63.5 |
| Gemini 3 Flash PreviewMIDGoogle (Gemini) | $0.50 | $3 | $0.05 | $127 |
| Gemini 3.5 FlashMIDGoogle (Gemini) | $1.50 | $9 | $0.15 | $381 |
| Gemini 3.1 Pro PreviewFRONTIERGoogle (Gemini) | $2 | $12 | $0.20 | $508 |
* Same engine as the calculator. See Gemini pricing · DeepSeek pricing in full.