{
  "id": "claude-sonnet-4-5",
  "identity": {
    "family": "claude",
    "display_name": "Claude Sonnet 4.5",
    "hub_id": null,
    "api_name": "claude-sonnet-4-5-20250929",
    "revision": "20250929",
    "variants": [],
    "license": "Anthropic commercial terms of service",
    "commercial_use": true,
    "commercial_use_note": "Paid Anthropic API under Anthropic's commercial terms; agent sessions bill on the platform key.",
    "release_date": "2025-09-29",
    "paper_url": null,
    "repo_url": null
  },
  "task": {
    "category": "generation",
    "modalities_in": [
      "text",
      "image"
    ],
    "modalities_out": [
      "text",
      "structured"
    ],
    "best_at": "Multi-step tool use and reasoning; the default model of agent sessions (DEFAULT_AGENT_MODEL) and of agentic_enrich when no provider or model is given.",
    "worst_at": "Per-document cost: agentic_enrich makes 3 to 15 calls per document, so it needs a when filter; no video or audio input."
  },
  "io": {
    "input": {
      "text": "messages and tool results",
      "image": "image URLs"
    },
    "output": {
      "text": "messages, tool calls, structured fields"
    }
  },
  "mixpeek_wiring": {
    "extractors": [],
    "feature_uris": [],
    "vector_indexes": [],
    "retriever_stages": [
      "agentic_enrich"
    ],
    "composes_with": [
      "feature_search -> agentic_enrich (Claude Sonnet 4.5 by default, gemini-2.5-pro as escalation model)",
      "agent sessions (api.agents) call Anthropic only"
    ]
  },
  "run": {
    "status": "api",
    "status_reason": "Provider API. Agent sessions and agentic_enrich call Anthropic directly; universal__api routes claude-* models for POST /v1/inference.",
    "serve_apps": [
      "universal__api"
    ],
    "runtime": "Anthropic Messages API (shared.models.llm Anthropic provider, api.agents.services)",
    "weights_format": "api",
    "trust_remote_code": false,
    "size_on_disk_mb": null,
    "params_millions": null,
    "preprocessing": "Agent or stage prompt with tool definitions.",
    "postprocessing": "Tool calls executed by the runtime; final text parsed into fields.",
    "serving_shape": "realtime",
    "batch_size": null,
    "serve_batch": null,
    "scale_to_zero": {
      "min_replicas": 0,
      "max_replicas": 6,
      "idle_timeout_s": 600,
      "memory_gb": null,
      "num_cpus": 0.1,
      "num_gpus": 0,
      "cold_start_s": {
        "warm_node_s": null,
        "new_node_s": null,
        "source": null
      },
      "cpu_fallback": true
    }
  },
  "cost": {
    "unmeasured": true,
    "measured": null,
    "note": "Billed per token by Anthropic; no committed measurement."
  },
  "evidence": {
    "unmeasured": true,
    "items": []
  },
  "refs": [
    "api://anthropic/claude-sonnet-4-5-20250929"
  ],
  "formats": [
    {
      "ref": "api://anthropic/claude-sonnet-4-5-20250929",
      "format": "api",
      "file": null,
      "loader": "provider SDK, called by model name",
      "supported_today": true
    }
  ],
  "use_cases": [
    "tagging",
    "captioning"
  ],
  "recommended": {
    "value": false,
    "for": [],
    "reason": null
  },
  "demos": [],
  "seo": {
    "title": "Claude Sonnet 4.5: language model",
    "description": "Claude Sonnet 4.5 is a text and image language model (Anthropic commercial terms of service). Called on Mixpeek through the provider API.",
    "keywords": [
      "Claude Sonnet 4.5",
      "claude",
      "language",
      "claude-sonnet-4-5-20250929",
      "tagging",
      "captioning"
    ],
    "faqs": [
      {
        "q": "What is Claude Sonnet 4.5 best at?",
        "a": "Multi-step tool use and reasoning; the default model of agent sessions (DEFAULT_AGENT_MODEL) and of agentic_enrich when no provider or model is given."
      },
      {
        "q": "What are the limits of Claude Sonnet 4.5?",
        "a": "Per-document cost: agentic_enrich makes 3 to 15 calls per document, so it needs a when filter; no video or audio input."
      },
      {
        "q": "Can Claude Sonnet 4.5 be used commercially?",
        "a": "Yes. Paid Anthropic API under Anthropic's commercial terms; agent sessions bill on the platform key."
      },
      {
        "q": "How does Claude Sonnet 4.5 run on Mixpeek?",
        "a": "Provider API. Agent sessions and agentic_enrich call Anthropic directly; universal__api routes claude-* models for POST /v1/inference."
      }
    ]
  },
  "last_verified": "2026-11-05",
  "sources": [
    "https://www.anthropic.com/news/claude-sonnet-4-5",
    "server/shared/agents/models.py",
    "server/api/agents/services.py",
    "server/shared/retrievers/stages/enrich/agentic/models.py",
    "server/engine/inference/llm/routes.py"
  ],
  "registry": {
    "universal__api": {
      "deployment": "universal__api",
      "service_id": "universal/api",
      "routes": "engine/inference/llm/routes.py",
      "route_prefix": "/universal/api",
      "enabled": true,
      "description": "Universal inference endpoint routing to multiple providers and modalities. Supports: OpenAI (GPT, embeddings, Whisper), Google (Gemini, Vertex embeddings), Anthropic (Claude). Routes based on model parameter.",
      "capabilities": {
        "category": "generation",
        "modality_input": [
          "text"
        ],
        "modality_output": "text",
        "supports_batch": true,
        "reranking_mode": null
      },
      "vector_config": null,
      "serve": {
        "min_replicas": 0,
        "max_replicas": 6,
        "idle_timeout_s": 600,
        "target_ongoing_requests": 25,
        "num_cpus": 0.1,
        "num_gpus": 0,
        "memory_gb": null,
        "pinnable": false,
        "placement": "worker",
        "enabled": true
      },
      "interactive_twin": false,
      "interactive_serve": null,
      "schemas": {
        "input": null,
        "output": null,
        "config": null
      }
    }
  },
  "templates": [],
  "usage": {
    "namespaces": null,
    "collections": null,
    "uncounted": true,
    "templates": 0,
    "counted_at": null,
    "source": null
  },
  "facets": {
    "status": "api",
    "category": "generation",
    "family": "claude",
    "license": "Anthropic commercial terms of service",
    "commercial_use": true,
    "modalities_in": [
      "text",
      "image"
    ],
    "modalities_out": [
      "text",
      "structured"
    ],
    "use_cases": [
      "tagging",
      "captioning"
    ],
    "recommended": false,
    "release_date": "2025-09-29",
    "params_millions": null,
    "size_on_disk_mb": null,
    "vector_dims": null,
    "vector_distance": null,
    "weights_format": "api",
    "formats": [
      "api"
    ],
    "loadable_today": true,
    "trust_remote_code": false,
    "cpu_fallback": true,
    "num_gpus": 0,
    "memory_gb": null,
    "min_replicas": 0,
    "serving_shape": "realtime",
    "served": true,
    "ref_schemes": [
      "api"
    ],
    "has_evidence": false,
    "cost_measured": false,
    "template_count": 0,
    "usage_namespaces": null,
    "usage_collections": null,
    "usage_uncounted": true,
    "has_demo": false,
    "rank_score": 2
  },
  "rank_score": 2
}