> ## Documentation Index
> Fetch the complete documentation index at: https://docs.galtea.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Update Model

> Update an existing model.

## Returns

Returns the updated [Model](/concepts/model) object.

## Example

```python theme={"system"}
model = galtea.models.update(
    model_id=model_id,
    input_cost_per_token=0.000015,
    output_cost_per_token=0.000035,
)
```

## Parameters

<ResponseField name="model_id" type="string" required>
  ID of the model to update.
</ResponseField>

<ResponseField name="name" type="string" optional>
  New name for the model.
</ResponseField>

<ResponseField name="input_cost_per_token" type="float" optional>
  New cost in dollars per input token.
</ResponseField>

<ResponseField name="output_cost_per_token" type="float" optional>
  New cost in dollars per output token.
</ResponseField>

<ResponseField name="cache_read_input_token_cost" type="float" optional>
  New cost in dollars per cached input token.
</ResponseField>

<ResponseField name="cache_creation_input_token_cost" type="float" optional>
  New cost in dollars per input token when creating a cache entry.
</ResponseField>

<ResponseField name="input_cost_per_token_above_128k_tokens" type="float" optional>
  New cost in dollars per input token for contexts larger than 128k tokens.
</ResponseField>

<ResponseField name="output_cost_per_token_above_128k_tokens" type="float" optional>
  New cost in dollars per output token for contexts larger than 128k tokens.
</ResponseField>

<ResponseField name="tokenizer_provider" type="string" optional>
  New tokenizer provider (e.g., `"OpenAI"`, `"Anthropic"`).
</ResponseField>

<ResponseField name="source" type="string" optional>
  New pricing source. This can be a URL to the model's pricing page or documentation.
</ResponseField>

<Note>
  All fields except `model_id` default to `PydanticUndefined` (from `pydantic_core`).
  Omit a field (or pass `PydanticUndefined`) to leave it unchanged.
  Pass `None` to explicitly clear an optional field.
  Pass a value to update it.
</Note>