# AI Inference limits

A model in [AI Inference](/en/documentation/platform/ai-inference/) meets two kinds of boundary. The first is a condition: Azion terminates a model that consumes too much memory or runs too long, and deprovisions one that is never executed. The second is a stated value that bounds one call, such as a request field or a model's context length. This page carries the conditions, and names the page that states each value.

## Model termination and deprovisioning

Azion applies the conditions below to every model. The first two bound a model while it runs, and Azion publishes no value for either ceiling. The third states a number of days.

| Condition                                | Value         | What happens past it                                                                     |
| ---------------------------------------- | ------------- | ---------------------------------------------------------------------------------------- |
| Memory a model consumes                  | Not published | Azion may terminate a model that consumes more than the maximum defined memory.          |
| Time a model runs                        | Not published | Azion may terminate a model that runs for longer than the maximum allowed time.          |
| Time since creation without an execution | 3 days        | Azion may deprovision a model that is created and not executed for more than three days. |

---

## Limits stated on other pages

The values that bound a model call belong to the model, to the request schema, or to the function that makes the call. Each one is stated on the page that owns it. To size a prompt, read the context length on the page of the model you call.

| Limit                | What it bounds                                                                                     | Where it is stated                                                            |
| -------------------- | -------------------------------------------------------------------------------------------------- | ----------------------------------------------------------------------------- |
| Context length       | The context a model accepts, in tokens. Each model page states its own value.                      | [AI models](/en/documentation/platform/ai-inference/models/)                  |
| Request field bounds | The values `temperature`, `top_p`, `n`, `presence_penalty`, and `frequency_penalty` accept.        | [Model invocation](/en/documentation/platform/ai-inference/model-invocation/) |
| Function limits      | The code size, memory, execution time, and outbound requests of the function that calls the model. | [Functions limits](/en/documentation/platform/functions/limits/)              |

---

## Related resources

- [Model invocation](/en/documentation/platform/ai-inference/model-invocation.md): The request fields a model call accepts, with the bounds on each one.
- [AI models](/en/documentation/platform/ai-inference/models.md): The catalog to open for the context length and the id of a single model.
- [Functions limits](/en/documentation/platform/functions/limits.md): The values that bound the function a model call runs inside.
- [How AI Inference works](/en/documentation/platform/ai-inference/how-it-works.md): What executes a model, and what the conditions on this page apply to.
- [Pricing](/en/documentation/fundamentals/pricing.md#ai-inference): The metric a model call is measured in, and the rate charged for it.
- [Support](/en/documentation/support.md): Where to ask which value applies when this page states none.