Get a Model

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.

Path Parameters

• model_id: string

  Model identifier or alias.

Header Parameters

• "anthropic-beta": optional array of AnthropicBeta

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

  • string

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

    • "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"

    • "advisor-tool-2026-03-01"

    • "managed-agents-2026-04-01"

    • "cache-diagnosis-2026-04-07"

Returns

• BetaModelInfo object { id, capabilities, created_at, 4 more }

  • id: string

    Unique model identifier.

  • capabilities: BetaModelCapabilities

    Model capability information.

    • batch: BetaCapabilitySupport

      Whether the model supports the Batch API.

      • supported: boolean

        Whether this capability is supported by the model.

    • citations: BetaCapabilitySupport

      Whether the model supports citation generation.

    • code_execution: BetaCapabilitySupport

      Whether the model supports code execution tools.

    • context_management: BetaContextManagementCapability

      Context management support and available strategies.

      • clear_thinking_20251015: BetaCapabilitySupport

        Indicates whether a capability is supported.

      • clear_tool_uses_20250919: BetaCapabilitySupport

        Indicates whether a capability is supported.

      • compact_20260112: BetaCapabilitySupport

        Indicates whether a capability is supported.

      • supported: boolean

        Whether this capability is supported by the model.

    • effort: BetaEffortCapability

      Effort (reasoning_effort) support and available levels.

      • high: BetaCapabilitySupport

        Whether the model supports high effort level.

      • low: BetaCapabilitySupport

        Whether the model supports low effort level.

      • max: BetaCapabilitySupport

        Whether the model supports max effort level.

      • medium: BetaCapabilitySupport

        Whether the model supports medium effort level.

      • supported: boolean

        Whether this capability is supported by the model.

      • xhigh: BetaCapabilitySupport

        Indicates whether a capability is supported.

    • image_input: BetaCapabilitySupport

      Whether the model accepts image content blocks.

    • pdf_input: BetaCapabilitySupport

      Whether the model accepts PDF content blocks.

    • structured_outputs: BetaCapabilitySupport

      Whether the model supports structured output / JSON mode / strict tool schemas.

    • thinking: BetaThinkingCapability

      Thinking capability and supported type configurations.

      • supported: boolean

        Whether this capability is supported by the model.

      • types: BetaThinkingTypes

        Supported thinking type configurations.

        • adaptive: BetaCapabilitySupport

          Whether the model supports thinking with type 'adaptive' (auto).

        • enabled: BetaCapabilitySupport

          Whether the model supports thinking with type 'enabled'.

  • 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.

  • display_name: string

    A human-readable name for the model.

  • max_input_tokens: number

    Maximum input context window size in tokens for this model.

  • max_tokens: number

    Maximum value for the max_tokens parameter when using this model.

  • type: "model"

    Object type.

    For Models, this is always "model".

    • "model"

Example

curl https://api.anthropic.com/v1/models/$MODEL_ID \
    -H 'anthropic-version: 2023-06-01' \
    -H "X-Api-Key: $ANTHROPIC_API_KEY"

Response

{
  "id": "claude-opus-4-6",
  "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": "2026-02-04T00:00:00Z",
  "display_name": "Claude Opus 4.6",
  "max_input_tokens": 0,
  "max_tokens": 0,
  "type": "model"
}