Claude Platform Docs

Get a Model

beta.models.retrieve(strmodel_id, ModelRetrieveParams**kwargs) -> BetaModelInfo
GET/v1/models/{model_id}

Get a specific model.

The Models API response can be used to determine information about a specific model or resolve a model alias to a model ID.

Parameters
model_id: str

Model identifier or alias.

betas: Optional[List[AnthropicBetaParam]]

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

One of the following:
str
Literal["message-batches-2024-09-24", "prompt-caching-2024-07-31", "computer-use-2024-10-22", 38 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"
Returns
class BetaModelInfo: …
id: str

Unique model identifier.

allowed_fallback_models: Optional[List[str]]

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: Optional[BetaModelCapabilities]

Model capability information.

created_at: datetime

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: str

A human-readable name for the model.

max_input_tokens: Optional[int]

Maximum input context window size in tokens for this model.

max_tokens: Optional[int]

Maximum value for the max_tokens parameter when using this model.

type: Literal["model"]

Object type.

For Models, this is always "model".

defaultmodel

Get a Model

import os
from anthropic import Anthropic

client = Anthropic(
    api_key=os.environ.get(
        "ANTHROPIC_API_KEY"
    ),  # This is the default and can be omitted
)
beta_model_info = client.beta.models.retrieve(
    model_id="model_id",
)
print(beta_model_info.id)
{
  "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"
}
Returns Examples
{
  "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"
}