How is each tier billed on the Agent API?
Tokens are billed at the tier each call actually ran on.
| Tier | Input / 1M tokens | Output / 1M tokens |
|---|---|---|
| Flash | $1.60 | $3.40 |
| Max | $1.80 | $3.80 |
| Heavy | $2.00 | $4.40 |
- A run with
tier: "auto"is billed at Flash rates. - Output includes reasoning tokens.
- Long-context input above 262K tokens: 1.5×: a request whose prompt is over 262K tokens bills its whole input at 1.5× the rate.
- Computer time, tool actions, browser time and storage are billed the same on every tier.
See Rates.
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