Gemini 3.8 Flash API pricing and agent cost
| Provider | |
|---|---|
| Input | $0.75 / 1M tokens |
| Output | $3.75 / 1M tokens |
| Cached input | $0.075 / 1M tokens |
Through Dec 31, 2026; $1.50/$7.50 from Jan 1, 2027 (cached input $0.075 to $0.15).
Source: https://ai.google.dev/gemini-api/docs/pricing (checked 2026-10-25)
Example agent cost
An agent making 5 tool calls per task, with 3,000 input and 800 output tokens per call, running 100 tasks a day costs about $0.0262 per task, $2.62 per day, and $78.75 per month on Gemini 3.8 Flash.
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