Claude Platform Docs

Listar modelos

GET/v1/models

Lista los modelos disponibles.

La respuesta de la API de Models puede usarse para determinar qué modelos están disponibles para su uso en la API. Los modelos lanzados más recientemente aparecen primero.

Query parameters
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.

default20
maximum1000
minimum1
Headers
"anthropic-beta": optional array of AnthropicBeta

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

One of the following:
string
"message-batches-2024-09-24" or "prompt-caching-2024-07-31" or "computer-use-2024-10-22" or 41 more
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"
"fast-mode-2026-02-01"
"output-300k-2026-03-24"
"user-profiles-2026-03-24"
"user-profiles-2026-08-18"
"advisor-tool-2026-03-01"
"managed-agents-2026-04-01"
"cache-diagnosis-2026-04-07"
"dreaming-2026-04-21"
"thinking-token-count-2026-05-13"
"server-side-fallback-2026-06-01"
"server-side-fallback-2026-07-01"
"fallback-credit-2026-06-01"
"fallback-credit-2026-07-01"
"agent-memory-2026-07-22"
"mid-conversation-tool-changes-2026-07-01"
"compact-2026-01-12"
"computer-use-2025-11-24"
"mcp-tunnels-2026-06-22"
"structured-outputs-2025-11-13"
"task-budgets-2026-03-13"
"thinking-display-updates-2026-08-18"
"ce-user-management-2026-07-13"
"mid-conversation-output-config-2026-07-01"
"thinking-binding-controls-2026-08-01"
"mid-conversation-system-clear-at-2026-08-21"
Returns
data: array of BetaModelInfo { id, allowed_fallback_models, capabilities, 5 more }
id: string

Unique model identifier.

allowed_fallback_models: array of string or null

Model IDs this model accepts as fallbacks[i].model on the Messages API. An empty list means the fallbacks parameter is not supported for this model as primary.

capabilities: BetaModelCapabilities { batch, citations, code_execution, 6 more } or null

Model capability information.

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.

max_input_tokens: number or null

Maximum input context window size in tokens for this model.

max_tokens: number or null

Maximum value for the max_tokens parameter when using this model.

type: "model"

Object type.

For Models, this is always "model".

defaultmodel
first_id: string or null

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 or null

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

Listar modelos
curl https://api.anthropic.com/v1/models \
    -H 'anthropic-version: 2023-06-01' \
    -H "X-Api-Key: $ANTHROPIC_API_KEY"
Returns Examples
Response 200
{
  "data": [
    {
      "id": "claude-opus-5",
      "allowed_fallback_models": [
        "string"
      ],
      "capabilities": {
        "batch": {
          "supported": true
        },
        "citations": {
          "supported": true
        },
        "code_execution": {
          "supported": true
        },
        "context_management": {
          "clear_thinking_20251015": {
            "supported": true
          },
          "clear_tool_uses_20250919": {
            "supported": true
          },
          "compact_20260112": {
            "supported": true
          },
          "supported": true
        },
        "effort": {
          "high": {
            "supported": true
          },
          "low": {
            "supported": true
          },
          "max": {
            "supported": true
          },
          "medium": {
            "supported": true
          },
          "supported": true,
          "xhigh": {
            "supported": true
          }
        },
        "image_input": {
          "supported": true
        },
        "pdf_input": {
          "supported": true
        },
        "structured_outputs": {
          "supported": true
        },
        "thinking": {
          "supported": true,
          "types": {
            "adaptive": {
              "supported": true
            },
            "enabled": {
              "supported": true
            }
          }
        }
      },
      "created_at": "2026-07-24T00:00:00Z",
      "display_name": "Claude Opus 5",
      "max_input_tokens": 0,
      "max_tokens": 0,
      "type": "model"
    }
  ],
  "first_id": "first_id",
  "has_more": true,
  "last_id": "last_id"
}