Get a Model

ModelInfo models().retrieve(, )

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

ModelRetrieveParams params

Optional<String> modelId

Model identifier or alias.

Optional<List<AnthropicBeta>> betas

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

MESSAGE_BATCHES_2024_09_24("message-batches-2024-09-24")

PROMPT_CACHING_2024_07_31("prompt-caching-2024-07-31")

COMPUTER_USE_2024_10_22("computer-use-2024-10-22")

COMPUTER_USE_2025_01_24("computer-use-2025-01-24")

PDFS_2024_09_25("pdfs-2024-09-25")

TOKEN_COUNTING_2024_11_01("token-counting-2024-11-01")

TOKEN_EFFICIENT_TOOLS_2025_02_19("token-efficient-tools-2025-02-19")

OUTPUT_128K_2025_02_19("output-128k-2025-02-19")

FILES_API_2025_04_14("files-api-2025-04-14")

MCP_CLIENT_2025_04_04("mcp-client-2025-04-04")

MCP_CLIENT_2025_11_20("mcp-client-2025-11-20")

DEV_FULL_THINKING_2025_05_14("dev-full-thinking-2025-05-14")

INTERLEAVED_THINKING_2025_05_14("interleaved-thinking-2025-05-14")

CODE_EXECUTION_2025_05_22("code-execution-2025-05-22")

EXTENDED_CACHE_TTL_2025_04_11("extended-cache-ttl-2025-04-11")

CONTEXT_1M_2025_08_07("context-1m-2025-08-07")

CONTEXT_MANAGEMENT_2025_06_27("context-management-2025-06-27")

MODEL_CONTEXT_WINDOW_EXCEEDED_2025_08_26("model-context-window-exceeded-2025-08-26")

SKILLS_2025_10_02("skills-2025-10-02")

FAST_MODE_2026_02_01("fast-mode-2026-02-01")

OUTPUT_300K_2026_03_24("output-300k-2026-03-24")

USER_PROFILES_2026_03_24("user-profiles-2026-03-24")

USER_PROFILES_2026_08_18("user-profiles-2026-08-18")

ADVISOR_TOOL_2026_03_01("advisor-tool-2026-03-01")

MANAGED_AGENTS_2026_04_01("managed-agents-2026-04-01")

CACHE_DIAGNOSIS_2026_04_07("cache-diagnosis-2026-04-07")

DREAMING_2026_04_21("dreaming-2026-04-21")

THINKING_TOKEN_COUNT_2026_05_13("thinking-token-count-2026-05-13")

SERVER_SIDE_FALLBACK_2026_06_01("server-side-fallback-2026-06-01")

SERVER_SIDE_FALLBACK_2026_07_01("server-side-fallback-2026-07-01")

FALLBACK_CREDIT_2026_06_01("fallback-credit-2026-06-01")

FALLBACK_CREDIT_2026_07_01("fallback-credit-2026-07-01")

AGENT_MEMORY_2026_07_22("agent-memory-2026-07-22")

MID_CONVERSATION_TOOL_CHANGES_2026_07_01("mid-conversation-tool-changes-2026-07-01")

COMPACT_2026_01_12("compact-2026-01-12")

COMPUTER_USE_2025_11_24("computer-use-2025-11-24")

MCP_TUNNELS_2026_06_22("mcp-tunnels-2026-06-22")

STRUCTURED_OUTPUTS_2025_11_13("structured-outputs-2025-11-13")

TASK_BUDGETS_2026_03_13("task-budgets-2026-03-13")

THINKING_DISPLAY_UPDATES_2026_08_18("thinking-display-updates-2026-08-18")

CE_USER_MANAGEMENT_2026_07_13("ce-user-management-2026-07-13")

Returns

class ModelInfo:

String id

Unique model identifier.

Optional<ModelCapabilities> capabilities

Model capability information.

LocalDateTime createdAt

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

String displayName

A human-readable name for the model.

Optional<Long> maxInputTokens

Maximum input context window size in tokens for this model.

Optional<Long> maxTokens

Maximum value for the max_tokens parameter when using this model.

JsonValue type

Object type.

For Models, this is always "model".

Get a Model

package com.anthropic.example;

import com.anthropic.client.AnthropicClient;
import com.anthropic.client.okhttp.AnthropicOkHttpClient;
import com.anthropic.models.models.ModelInfo;
import com.anthropic.models.models.ModelRetrieveParams;

public final class Main {
    private Main() {}

    public static void main(String[] args) {
        AnthropicClient client = AnthropicOkHttpClient.fromEnv();

        ModelInfo modelInfo = client.models().retrieve("model_id");
    }
}

{
  "id": "claude-opus-5",
  "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",
  "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"
}