Prompt cost estimator
Paste a prompt and pick a model. Input tokens are a character heuristic. Output tokens are the number you type. Prices are the bundled list-price snapshot.
Prompt
Estimate
- Input tokens: 0
- Output tokens: 500
- Estimated cost: $0.0100
- List price as of 2026-07-30: $4 / 1M input, $20 / 1M output, $0.4 / 1M cached input. The total uses input and output only.
This is a drafting estimate, in the browser. It is a character heuristic plus the bundled list prices, and it leaves cached input out of the total.