# Anthropic

To use a language model hosted on Anthropic, specify `anthropic` in the `from` field.

To use a specific model, include its model ID in the `from` field (see example below). If not specified, the default model is `claude-3-5-sonnet-latest`.

The following parameters are specific to Anthropic models:

| Parameter           | Description                      | Default                        |
| ------------------- | -------------------------------- | ------------------------------ |
| `anthropic_api_key` | The Anthropic API key.           | -                              |
| `endpoint`          | The Anthropic API base endpoint. | `https://api.anthropic.com/v1` |

Example `spicepod.yml` configuration:

```yaml
models:
  - from: anthropic:claude-sonnet-4-5
    name: claude_4_5_sonnet
    params:
      anthropic_api_key: ${ secrets:SPICE_ANTHROPIC_API_KEY }
```

See [Anthropic Model Names](https://platform.claude.com/docs/en/about-claude/models/overview) for a list of supported model names.


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# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.spice.ai/building-blocks/model-providers/anthropic.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.