DeepSeek Flash (V4.1 Flash 1017) vs Gemini 3.8 Flash: API pricing and agent cost
| Model | Provider | Input $/1M | Output $/1M | Cached $/1M | Per task | Per month |
|---|---|---|---|---|---|---|
| DeepSeek Flash (V4.1 Flash 1017) | DeepSeek | $0.3 | $1.2 | $0.006 | $0.0093 | $27.90 |
| Gemini 3.8 Flash | $0.75 | $3.75 | $0.075 | $0.0262 | $78.75 |
For an agent making 5 tool calls per task (3,000 input and 800 output tokens per call) and running 100 tasks a day, DeepSeek Flash (V4.1 Flash 1017) is the cheaper option at $27.90 a month, versus $78.75 for Gemini 3.8 Flash (2.8× the cost).
This compares list prices only, not quality. API model deepseek-flash, served by DeepSeek-V4.1-Flash-1017. Peak-hour price; off-peak $0.15/$0.60. Open-weights model. Server-side Search/Fetch tool calls (e.g. via Claude Code or Codex) cost $0.75 per 1K requests starting Nov 1, 2026. Through Dec 31, 2026; $1.50/$7.50 from Jan 1, 2027 (cached input $0.075 to $0.15).
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