How Much Does the GPT API Cost?
GPT models are priced per token, with reasoning models costing more per output. Agents burn tokens fast — the bill is rate × volume, and volume is the story.
How GPT pricing works
Per-token pricing by model, input and output.
Reasoning models charge premium output rates — and agents reason a lot.
Verify current pricing on OpenAI's site.
The agentic multiplier
Long contexts and long outputs per turn.
Retry loops and multi-turn sessions compound volume.
Reasoning models multiply output costs during planning.
What it really costs
Model rate × volume. Model selection and per-agent caps control the total.
Where the money goes
| Cost bucket | How to control it |
|---|---|
| Token rates | Model selection |
| Reasoning output | Limit planning depth |
| Agentic volume | Per-agent ceilings |
| Retries | Velocity limits |
FAQ
Is GPT expensive for agents?
Rates vary by model — verify current pricing. Volume dominates the bill.
Can sipi.bot control OpenAI spend?
Yes — per-agent caps and category rules apply to OpenAI like any merchant.
Related
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