{
  "data": {
    "tool": {
      "author": "anthropic",
      "category": "inference",
      "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/claude-fable.json",
      "kind": "model",
      "listed": "indexed",
      "maker": "Anthropic",
      "markdownUrl": "https://www.anchorterminal.com/tools/claude-fable.md",
      "modelCount": 2,
      "models": [
        {
          "contextTokens": 1000000,
          "id": "anthropic/claude-fable-5.1",
          "input": [
            "file",
            "image",
            "text"
          ],
          "inputUsdPerM": 10,
          "maxOutput": 128000,
          "name": "Claude Fable 5.1",
          "outputUsdPerM": 50,
          "promptCaching": true,
          "reasoning": true,
          "released": "2026-09-01",
          "structuredOutputs": true,
          "tools": true
        },
        {
          "contextTokens": 1000000,
          "id": "anthropic/claude-fable-5",
          "input": [
            "file",
            "image",
            "text"
          ],
          "inputUsdPerM": 10,
          "maxOutput": 128000,
          "name": "Claude Fable 5",
          "outputUsdPerM": 50,
          "promptCaching": true,
          "reasoning": true,
          "released": "2026-06-09",
          "structuredOutputs": true,
          "tools": true
        }
      ],
      "name": "Claude Fable",
      "note": "Indexed from OpenRouter: facts and our own checks, not reviewed, so no score, grade or rank.",
      "pageJsonUrl": "https://www.anchorterminal.com/tools/claude-fable.json",
      "reviewed": false,
      "reviewedListing": {
        "name": "Claude API",
        "slug": "anthropic-api",
        "url": "https://www.anchorterminal.com/tools/anthropic-api"
      },
      "slug": "claude-fable",
      "source": "OpenRouter",
      "sourceUrl": "https://openrouter.ai/anthropic/claude-fable-5.1",
      "summary": "Claude Fable 5.1 improves on Claude Fable 5 across the board, with the biggest gains in agentic coding, long-running agentic workflows, and knowledge work: long code refactors, front-end and visual...",
      "updatedAt": "2026-09-01T18:03:58Z",
      "url": "https://www.anchorterminal.com/tools/claude-fable",
      "vendor": "Anthropic",
      "vendorUrl": "",
      "why": [
        "openrouter"
      ]
    }
  },
  "kind": "anchor.page",
  "links": {
    "api": "https://www.anchorterminal.com/api/v1/index.json",
    "html": "https://www.anchorterminal.com/tools/claude-fable",
    "json": "https://www.anchorterminal.com/tools/claude-fable.json",
    "llms": "https://www.anchorterminal.com/llms.txt",
    "markdown": "https://www.anchorterminal.com/tools/claude-fable.md",
    "slim": "https://www.anchorterminal.com/tools/claude-fable.min.md"
  },
  "markdown": "# Claude Fable\n\n\u003e Indexed, not reviewed: facts from OpenRouter and our own checks. No score, grade or rank, and not in the rankings until the panel reviews it. How the index works: https://www.anchorterminal.com/indexed/\n\n- Kind: model family, by Anthropic\n- Category: Model APIs \u0026 inference (https://www.anchorterminal.com/categories/inference.md)\n- Listed because: OpenRouter lists it, with prices from the providers that serve it.\n- What OpenRouter says: Claude Fable 5.1 improves on Claude Fable 5 across the board, with the biggest gains in agentic coding, long-running agentic workflows, and knowledge work: long code refactors, front-end and visual...\n- Some of these models are reviewed as part of Claude API: https://www.anchorterminal.com/tools/anthropic-api.md\n\n## Models (2)\n\n| Model | OpenRouter id | Released | Context | Input $/1M | Output $/1M | Supports |\n| --- | --- | --- | --- | --- | --- | --- |\n| Claude Fable 5.1 | `anthropic/claude-fable-5.1` | 2026-09 | 1M | $10 | $50 | tools, structured output, reasoning, caching, file, image |\n| Claude Fable 5 | `anthropic/claude-fable-5` | 2026-06 | 1M | $10 | $50 | tools, structured output, reasoning, caching, file, image |\n\nPrices and limits as OpenRouter lists them; a provider's own price can differ.\n\n- JSON: https://www.anchorterminal.com/api/v1/tools/claude-fable.json\n- Being indexed says nothing about quality, and nobody can pay for it. Ask for a review: https://www.anchorterminal.com/builders/#claiming\n",
  "meta": {
    "attribution": "Anchor Terminal (https://www.anchorterminal.com)",
    "docs": "https://www.anchorterminal.com/docs/",
    "generatedAt": "2026-10-05",
    "license": "CC-BY-4.0",
    "method": "https://www.anchorterminal.com/benchmark/",
    "methodology": "0.3",
    "openapi": "https://www.anchorterminal.com/openapi.json",
    "preview": false,
    "run": "2026-10-01",
    "runLabel": "October 2026 research run"
  },
  "page": {
    "breadcrumbs": [
      {
        "name": "Home",
        "url": "https://www.anchorterminal.com/"
      },
      {
        "name": "Terminal",
        "url": "https://www.anchorterminal.com/tools/"
      },
      {
        "name": "Indexed",
        "url": "https://www.anchorterminal.com/indexed/"
      },
      {
        "name": "Claude Fable",
        "url": ""
      }
    ],
    "description": "Claude Fable, a family of models by Anthropic, listed from OpenRouter. Indexed, not reviewed: facts and our own checks, no score or ranking. Claude Fable 5.1 improves on Claude Fable 5 across the board, with the biggest gains in agentic coding, long-running agentic workflows…",
    "facts": [
      "not reviewed",
      "not ranked",
      "facts only"
    ],
    "h1": "Claude Fable",
    "image": "https://www.anchorterminal.com/assets/og/indexed.png",
    "path": "/tools/claude-fable",
    "published": "",
    "section": "indexed",
    "title": "Claude Fable: family of models, indexed from OpenRouter",
    "toc": null,
    "updated": "2026-10-05",
    "url": "https://www.anchorterminal.com/tools/claude-fable"
  },
  "tokens": {
    "markdown": 550,
    "slim": 480
  },
  "version": 1
}