List Models

get/v1/models

List available models.

The Models API response can be used to determine which models are available for use in the API. More recently released models are listed first.

Query ParametersExpand Collapse

after_id: optional string

ID of the object to use as a cursor for pagination. When provided, returns the page of results immediately after this object.

before_id: optional string

ID of the object to use as a cursor for pagination. When provided, returns the page of results immediately before this object.

limit: optional number

Number of items to return per page.

Defaults to 20. Ranges from 1 to 1000.

maximum1000

minimum1

Header ParametersExpand Collapse

"anthropic-beta": optional array of AnthropicBeta

Optional header to specify the beta version(s) you want to use.

Accepts one of the following:

UnionMember0 = string

UnionMember1 = "message-batches-2024-09-24" or "prompt-caching-2024-07-31" or "computer-use-2024-10-22" or 16 more

Accepts one of the following:

"message-batches-2024-09-24"

"prompt-caching-2024-07-31"

"computer-use-2024-10-22"

"computer-use-2025-01-24"

"pdfs-2024-09-25"

"token-counting-2024-11-01"

"token-efficient-tools-2025-02-19"

"output-128k-2025-02-19"

"files-api-2025-04-14"

"mcp-client-2025-04-04"

"mcp-client-2025-11-20"

"dev-full-thinking-2025-05-14"

"interleaved-thinking-2025-05-14"

"code-execution-2025-05-22"

"extended-cache-ttl-2025-04-11"

"context-1m-2025-08-07"

"context-management-2025-06-27"

"model-context-window-exceeded-2025-08-26"

"skills-2025-10-02"

ReturnsExpand Collapse

data: array of ModelInfo { id, created_at, display_name, type }

id: string

Unique model identifier.

created_at: string

RFC 3339 datetime string representing the time at which the model was released. May be set to an epoch value if the release date is unknown.

formatdate-time

display_name: string

A human-readable name for the model.

type: "model"

Object type.

For Models, this is always "model".

Accepts one of the following:

"model"

first_id: string

First ID in the data list. Can be used as the before_id for the previous page.

has_more: boolean

Indicates if there are more results in the requested page direction.

last_id: string

Last ID in the data list. Can be used as the after_id for the next page.

List Models

curl https://api.anthropic.com/v1/models \  -H "X-Api-Key: $ANTHROPIC_API_KEY"

Response 200

{  "data": [  {  "id": "claude-sonnet-4-20250514",  "created_at": "2025-02-19T00:00:00Z",  "display_name": "Claude Sonnet 4",  "type": "model"  }  ],  "first_id": "first_id",  "has_more": true,  "last_id": "last_id" }

Returns Examples

Response 200

{  "data": [  {  "id": "claude-sonnet-4-20250514",  "created_at": "2025-02-19T00:00:00Z",  "display_name": "Claude Sonnet 4",  "type": "model"  }  ],  "first_id": "first_id",  "has_more": true,  "last_id": "last_id" }