# Models endpoint

> GET /v1/models — discover exactly which model ids your key can call.

_Source: https://aiprimetech.io/docs/api-reference/models-endpoint/ · Home > Docs > API reference_

The authoritative list. If an id is not here, your key cannot call it — do not guess ids from documentation or blog posts.

```bash
curl https://aiprimetech.io/v1/models \
  -H "Authorization: Bearer $CLAUDEAPIKEY"
```


## Response

```json
{
  "object": "list",
  "data": [
    {"id": "claude-opus-4-8",   "object": "model", "owned_by": "anthropic"},
    {"id": "claude-sonnet-4-6", "object": "model", "owned_by": "anthropic"},
    {"id": "gpt-5.5",           "object": "model", "owned_by": "openai"}
  ]
}
```


## Practical uses

- **Health check.** A 200 proves base URL and key are both correct before you debug anything else.
- **Populating a model picker.** Read ids at startup instead of hardcoding a list that goes stale.
- **Catching typos.** Validate a configured model id against this list and fail loudly at boot rather than on the first user request.

```python
import os, httpx

r = httpx.get(
    "https://aiprimetech.io/v1/models",
    headers={"Authorization": f"Bearer {os.environ['CLAUDEAPIKEY']}"},
    timeout=20,
)
r.raise_for_status()
ids = [m["id"] for m in r.json()["data"]]
assert "claude-sonnet-4-6" in ids, "configured model not available on this key"
```

- [Models](https://aiprimetech.io/docs/getting-started/models/) — Prices and context windows
- [Errors](https://aiprimetech.io/docs/api-reference/errors/) — What model_not_found means


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_ClaudeAPIKey.dev is an independently operated, Anthropic-compatible API gateway. Not affiliated with Anthropic._