# Limits and support

## Limits

| Setting | Limit |
| --- | --- |
| Context and output | [Per-model limits](/guides/inference-models/#capabilities-and-limits) |
| Request body | **50 MiB** total JSON, including base64 images and history |
| Image formats | JPEG and PNG; base64 adds roughly one third to file size |
| Rate and concurrency | No fixed per-key allowance is published; contact support for capacity commitments |
| Serving deadlines | Up to **10 minutes** for prefill; **15 minutes** for a non-streaming response. Client/network timeouts may be shorter. |

Set a client timeout explicitly, such as `timeout=600.0` on `OpenAI(...)`,
and use streaming for long outputs. Incomplete streams cannot be resumed;
retries are new requests and may incur additional charges. Do not replay
completed tool actions.

## Errors

| Status | Action |
| --- | --- |
| `400` / `422` | Fix the request or unsupported parameter. |
| `401` / `403` | Check the key and account/model access. |
| `402` | Check your [Console](https://console.river.ai/) balance. |
| `404` | Check the model ID and endpoint. |
| `413` | Reduce request size. |
| `429` / `503` | Reduce concurrency; back off with jitter and respect `Retry-After`. |
| `500` / `502` / `504` | Check service status; retry transient failures with a retry limit. |

## Support

[Service status](https://status.river.ai/) · [support@river.ai](mailto:support@river.ai)

Include the model, endpoint, request time/timezone, status code, and
`x-request-id` when available. Never include your API key.

## Data handling

Default [Commercial terms](https://console.river.ai/terms): no training on
your inputs or outputs; User Content retained up to **2 days after the session
ends**, with legal, safety/security/compliance, and agreed exceptions.
De-identified aggregate statistics may be retained longer. Testing terms and signed addenda
may differ; `store: false` is not a zero-data-retention agreement.