---
title: get_model
description: Resolve a model reference from an id.
type: reference
summary: Reference for ai.get_model.
---

# get_model



`get_model` resolves a model id to a `Model`.

```python
model = ai.get_model("anthropic/claude-sonnet-4")
model = ai.get_model("openai:gpt-5")
model = ai.get_model()
```

Unprefixed ids route through AI Gateway. Calling `get_model()` with no argument
reads `AI_SDK_DEFAULT_MODEL`.

## Arguments

* `model_id`: Optional model id. Provider-prefixed ids use `provider:model`.
  Gateway model ids can use `provider/model`.

## Return value

Returns `ai.Model`.


---

For a semantic overview of all documentation, see [/sitemap.md](/sitemap.md)

For an index of all available documentation, see [/llms.txt](/llms.txt)