---
title: "List Models"
method: GET
path: "/v1/models"
tags: ["anthropic-compat"]
---

# List Models

`GET /v1/models`

List available Anthropic-compatible models.

Authentication is optional. Anonymous callers receive the public runtime
catalog; authenticated callers also receive their user-scoped decoder
fine-tunes.

Args:
    limit: Maximum number of models to return. Omit to return the full
        assembled catalog.
    before_id: Cursor for paginating backward.
    after_id: Cursor for paginating forward.
    client_version: Optional Codex/OpenAI client version hint.
    auth: Optional authentication result.

Returns:
    Combined Anthropic-compatible and Codex/OpenAI-compatible model catalog.

Raises:
    HTTPException: If both cursor parameters are provided.

## Query parameters

- `limit` integer, nullable
- `before_id` string, nullable
- `after_id` string, nullable
- `client_version` string, nullable

## Response `200`

Successful Response

- unknown

## Other responses

- `422` — Validation Error

## Changes

- **2026-09-24** `1cffaad2a921` — 1 warning, 1 info
  - removed the optional property `detail` from the response with the `422` status
  - added the required property `error` to the response with the `422` status

[Change history](https://skmtc.dev/pioneer/apis/brain-api/changes/v1/models/get.md)

---

[API](https://skmtc.dev/pioneer/apis/brain-api.md) · [All operations](https://skmtc.dev/pioneer/apis/brain-api/llms.txt) · [OpenAPI document](https://skmtc.dev/pioneer/apis/brain-api/revisions/1cffaad2a921?raw)