# Pricing and limits

You buy credit in advance at [watermark.ws/developers](https://watermark.ws/developers); each finished request takes its price from it. Failed and aborted requests are free, and so is everything run with a test key.

A new account starts with $1.00 of free credit, which covers images and documents. Video needs an account that has bought credit.

| Endpoint | Price |
| --- | --- |
| `images/process` | $0.002 per request |
| `images/read` | $0.0005 per request |
| `videos/process` | $0.02 per started minute of video (accounts that have bought credits only) |
| `videos/read` | $0.001 per request (accounts that have bought credits only) |
| `videos/screenshot` | $0.002 per request (accounts that have bought credits only) |
| `documents/process` | $0.004 per page |
| `documents/read` | $0.0005 per request |
| `documents/snapshot` | $0.002 per request |

## Limits

| Key | Requests a minute | Running at once | Largest source | Requests a day |
| --- | --- | --- | --- | --- |
| Test key | 10 | 2 | 10 MB | 100 |
| Live key, free account | 30 | 2 | 25 MB | no limit |
| Live key, paid account | 120 | 10 | 2 GB | no limit |

An account with no credit left gets `402 insufficient_credits`. Going over requests a minute gets `429 rate_limited` with `Retry-After`. "Running at once" counts the account's requests that are queued or processing; one more gets `429 concurrency_limited` until one of them finishes.