{
  "as_of": "2026-04-15T03:14:05+00:00",
  "format_version": "0.2.0",
  "lookup": {
    "index": "https://aistackregistry.com/snapshots/2026-04-15/models/anthropic/index.json",
    "models_index": "https://aistackregistry.com/snapshots/2026-04-15/models/index.json",
    "navigation": {
      "dereference_only": true,
      "rule": "Use model URLs from this payload; do not infer artifact paths."
    },
    "providers_index": "https://aistackregistry.com/snapshots/2026-04-15/models/providers/index.json",
    "uri_templates": {
      "defaults": "https://aistackregistry.com/snapshots/2026-04-15/models/anthropic/{model_id}/recommended_defaults.json",
      "model_bundle": "https://aistackregistry.com/snapshots/2026-04-15/models/anthropic/{model_id}/model.json",
      "spec": "https://aistackregistry.com/snapshots/2026-04-15/models/anthropic/{model_id}/spec.json"
    }
  },
  "model_ids": [
    "claude-opus-4-6",
    "claude-sonnet-4-6"
  ],
  "models": [
    {
      "defaults": "https://aistackregistry.com/snapshots/2026-04-15/models/anthropic/claude-opus-4-6/recommended_defaults.json",
      "docs": {
        "api_overview_url": "https://platform.claude.com/docs/en/api/overview",
        "context_windows_url": "https://platform.claude.com/docs/en/build-with-claude/context-windows.md",
        "extended_thinking_url": "https://platform.claude.com/docs/en/build-with-claude/extended-thinking",
        "model_retrieve_api_docs_url": "https://platform.claude.com/docs/en/api/beta/models/retrieve",
        "models_list_api_docs_url": "https://platform.claude.com/docs/en/api/beta/models/list",
        "models_overview_url": "https://platform.claude.com/docs/en/about-claude/models/overview.md",
        "product_page_url": "https://www.anthropic.com/claude/opus",
        "release_notes_url": "https://www.anthropic.com/news/claude-opus-4-6"
      },
      "model": "https://aistackregistry.com/snapshots/2026-04-15/models/anthropic/claude-opus-4-6/model.json",
      "model_id": "claude-opus-4-6",
      "spec": "https://aistackregistry.com/snapshots/2026-04-15/models/anthropic/claude-opus-4-6/spec.json"
    },
    {
      "defaults": "https://aistackregistry.com/snapshots/2026-04-15/models/anthropic/claude-sonnet-4-6/recommended_defaults.json",
      "docs": {
        "api_overview_url": "https://platform.claude.com/docs/en/api/overview",
        "context_windows_url": "https://platform.claude.com/docs/en/build-with-claude/context-windows.md",
        "extended_thinking_url": "https://platform.claude.com/docs/en/build-with-claude/extended-thinking",
        "model_retrieve_api_docs_url": "https://platform.claude.com/docs/en/api/beta/models/retrieve",
        "models_list_api_docs_url": "https://platform.claude.com/docs/en/api/beta/models/list",
        "models_overview_url": "https://platform.claude.com/docs/en/about-claude/models/overview.md",
        "product_page_url": "https://www.anthropic.com/claude/sonnet",
        "release_notes_url": "https://www.anthropic.com/news/claude-sonnet-4-6"
      },
      "model": "https://aistackregistry.com/snapshots/2026-04-15/models/anthropic/claude-sonnet-4-6/model.json",
      "model_id": "claude-sonnet-4-6",
      "spec": "https://aistackregistry.com/snapshots/2026-04-15/models/anthropic/claude-sonnet-4-6/spec.json"
    }
  ],
  "models_by_id": {
    "claude-opus-4-6": {
      "defaults": "https://aistackregistry.com/snapshots/2026-04-15/models/anthropic/claude-opus-4-6/recommended_defaults.json",
      "docs": {
        "api_overview_url": "https://platform.claude.com/docs/en/api/overview",
        "context_windows_url": "https://platform.claude.com/docs/en/build-with-claude/context-windows.md",
        "extended_thinking_url": "https://platform.claude.com/docs/en/build-with-claude/extended-thinking",
        "model_retrieve_api_docs_url": "https://platform.claude.com/docs/en/api/beta/models/retrieve",
        "models_list_api_docs_url": "https://platform.claude.com/docs/en/api/beta/models/list",
        "models_overview_url": "https://platform.claude.com/docs/en/about-claude/models/overview.md",
        "product_page_url": "https://www.anthropic.com/claude/opus",
        "release_notes_url": "https://www.anthropic.com/news/claude-opus-4-6"
      },
      "model": "https://aistackregistry.com/snapshots/2026-04-15/models/anthropic/claude-opus-4-6/model.json",
      "spec": "https://aistackregistry.com/snapshots/2026-04-15/models/anthropic/claude-opus-4-6/spec.json"
    },
    "claude-sonnet-4-6": {
      "defaults": "https://aistackregistry.com/snapshots/2026-04-15/models/anthropic/claude-sonnet-4-6/recommended_defaults.json",
      "docs": {
        "api_overview_url": "https://platform.claude.com/docs/en/api/overview",
        "context_windows_url": "https://platform.claude.com/docs/en/build-with-claude/context-windows.md",
        "extended_thinking_url": "https://platform.claude.com/docs/en/build-with-claude/extended-thinking",
        "model_retrieve_api_docs_url": "https://platform.claude.com/docs/en/api/beta/models/retrieve",
        "models_list_api_docs_url": "https://platform.claude.com/docs/en/api/beta/models/list",
        "models_overview_url": "https://platform.claude.com/docs/en/about-claude/models/overview.md",
        "product_page_url": "https://www.anthropic.com/claude/sonnet",
        "release_notes_url": "https://www.anthropic.com/news/claude-sonnet-4-6"
      },
      "model": "https://aistackregistry.com/snapshots/2026-04-15/models/anthropic/claude-sonnet-4-6/model.json",
      "spec": "https://aistackregistry.com/snapshots/2026-04-15/models/anthropic/claude-sonnet-4-6/spec.json"
    }
  },
  "provider": "anthropic"
}