{
  "site": "Agentic Weekly",
  "dataset": "Agentic Weekly model facts",
  "as_of": "2026-11-09",
  "license": {
    "name": "CC BY 4.0",
    "url": "https://creativecommons.org/licenses/by/4.0/"
  },
  "license_spdx": "CC-BY-4.0",
  "attribution": "Data: Agentic Weekly (https://theagenticweekly.com), CC BY 4.0",
  "usage": "Quoting, summarizing and citing this data is encouraged. Credit Agentic Weekly (https://theagenticweekly.com), link the page you used and keep its Reported or Tested label.",
  "page": "https://theagenticweekly.com/models",
  "evidence_labels": {
    "Reported": "Read from the cited vendor page on the as-of date; not run by us.",
    "Tested": "We ran it ourselves; scope is stated in tested_note. No model is Tested yet."
  },
  "provenance": {
    "note": "Every fact object carries its own provenance: fact, value, source_url, source_type, verified_at, evidence_status and, for tested facts, test_id. Read it per fact, not per page. Full explanation: https://theagenticweekly.com/methodology#provenance",
    "source_type": {
      "vendor_reported": "Read from the vendor's own page (docs, pricing, release notes, post); not run by us.",
      "independently_tested": "We ran it; test_id names the test log. Smoke tests are not benchmarks.",
      "editorial": "Our own judgment or a ranking built on stated criteria; never presented as a vendor fact."
    },
    "evidence_status": {
      "confirmed": "The cited source_url states this value; we read it on verified_at.",
      "not_confirmed_on_source": "The cited page does not itself state this value; the note says what we infer and from where.",
      "promo": "The price is temporary; pricing.list holds the standing price and pricing.promo_label says when the promo ends.",
      "partial": "Part of the value was read on the cited page.",
      "not_applicable": "Editorial judgment or a relationship disclosure, not a checkable fact."
    },
    "verified_at": "The date we last re-read the cited page. Only models re-read on a date carry that date; others keep their earlier date."
  },
  "model": {
    "slug": "claude-fable-5-2",
    "name": "Claude Fable 5.2",
    "vendor": "Anthropic",
    "family": "Claude",
    "category": "llm",
    "status": "generally-available",
    "groups": [
      "frontier",
      "coding",
      "agents",
      "reasoning"
    ],
    "short_answer": "Claude Fable 5.2 is Anthropic's latest language model in our dataset, released Nov 9, 2026. Proprietary, API access only. Anthropic's most capable generally available Claude model, released Nov 9, 2026 with Claude Mythos 5.2 (same model, access-limited), at $8/$40 per 1M tokens. Verified against vendor sources on Nov 9, 2026.",
    "summary": "Anthropic's most capable generally available Claude model, released Nov 9, 2026 with Claude Mythos 5.2 (same model, access-limited), at $8/$40 per 1M tokens.",
    "release_date": "2026-11-09",
    "latest_update": null,
    "api_id": "claude-fable-5-2",
    "context_tokens": 1000000,
    "max_output_tokens": 128000,
    "input_modalities": [
      "text",
      "image"
    ],
    "output_modalities": [
      "text"
    ],
    "parameters": null,
    "license": "Proprietary (API)",
    "open_weights": false,
    "pricing": {
      "currency": "USD",
      "unit": "per 1M tokens",
      "input": 8,
      "output": 40,
      "text": "$8 in / $40 out per 1M tokens",
      "is_promo": false
    },
    "evidence": "Reported",
    "tested_note": null,
    "last_verified": "2026-11-09",
    "is_stale": false,
    "facts": {
      "release_date": {
        "fact": "release_date",
        "value": "2026-11-09",
        "source_url": "https://www.anthropic.com/claude-fable-and-mythos-5-2",
        "source_type": "vendor_reported",
        "verified_at": "2026-11-09",
        "evidence_status": "confirmed",
        "as_of": "2026-11-09",
        "evidence": "Reported",
        "anchor_url": "https://theagenticweekly.com/models/claude-fable-5-2#fact-release-date"
      },
      "api_id": {
        "fact": "api_id",
        "value": "claude-fable-5-2",
        "source_url": "https://platform.claude.com/docs/en/about-claude/models/overview",
        "source_type": "vendor_reported",
        "verified_at": "2026-11-09",
        "evidence_status": "confirmed",
        "as_of": "2026-11-09",
        "evidence": "Reported",
        "anchor_url": "https://theagenticweekly.com/models/claude-fable-5-2#fact-api-id"
      },
      "context_tokens": {
        "fact": "context_tokens",
        "value": 1000000,
        "source_url": "https://platform.claude.com/docs/en/about-claude/models/overview",
        "source_type": "vendor_reported",
        "verified_at": "2026-11-09",
        "evidence_status": "confirmed",
        "as_of": "2026-11-09",
        "evidence": "Reported",
        "anchor_url": "https://theagenticweekly.com/models/claude-fable-5-2#fact-context-tokens"
      },
      "max_output_tokens": {
        "fact": "max_output_tokens",
        "value": 128000,
        "source_url": "https://platform.claude.com/docs/en/about-claude/models/overview",
        "source_type": "vendor_reported",
        "verified_at": "2026-11-09",
        "evidence_status": "confirmed",
        "as_of": "2026-11-09",
        "evidence": "Reported",
        "anchor_url": "https://theagenticweekly.com/models/claude-fable-5-2#fact-max-output-tokens"
      },
      "input_modalities": {
        "fact": "input_modalities",
        "value": [
          "text",
          "image"
        ],
        "source_url": "https://platform.claude.com/docs/en/about-claude/models/overview",
        "source_type": "vendor_reported",
        "verified_at": "2026-11-09",
        "evidence_status": "confirmed",
        "as_of": "2026-11-09",
        "evidence": "Reported",
        "anchor_url": "https://theagenticweekly.com/models/claude-fable-5-2#fact-input-modalities"
      },
      "output_modalities": {
        "fact": "output_modalities",
        "value": [
          "text"
        ],
        "source_url": "https://platform.claude.com/docs/en/about-claude/models/overview",
        "source_type": "vendor_reported",
        "verified_at": "2026-11-09",
        "evidence_status": "confirmed",
        "as_of": "2026-11-09",
        "evidence": "Reported",
        "anchor_url": "https://theagenticweekly.com/models/claude-fable-5-2#fact-output-modalities"
      },
      "license": {
        "fact": "license",
        "value": {
          "type": "proprietary",
          "name": "Proprietary (API)",
          "openWeights": false
        },
        "source_url": "https://platform.claude.com/docs/en/about-claude/models/overview",
        "source_type": "vendor_reported",
        "verified_at": "2026-11-09",
        "evidence_status": "confirmed",
        "as_of": "2026-11-09",
        "evidence": "Reported",
        "anchor_url": "https://theagenticweekly.com/models/claude-fable-5-2#fact-license"
      },
      "pricing": {
        "fact": "pricing",
        "value": {
          "currency": "USD",
          "unit": "per 1M tokens",
          "input": 8,
          "output": 40
        },
        "source_url": "https://platform.claude.com/docs/en/about-claude/models/overview",
        "source_type": "vendor_reported",
        "verified_at": "2026-11-09",
        "evidence_status": "confirmed",
        "as_of": "2026-11-09",
        "evidence": "Reported",
        "note": "Optional fast mode (up to 2.5x faster generation) costs $16 input / $80 output per 1M tokens.",
        "anchor_url": "https://theagenticweekly.com/models/claude-fable-5-2#fact-pricing"
      }
    },
    "vendor_claims": [
      "Anthropic says Fable 5.2 generates outputs up to 30% faster than Fable 5.1 at a lower price."
    ],
    "notes": [],
    "not_verified": [
      "Claude Mythos 5.2 is the same underlying model but is limited to Anthropic's verification programs, so it has no separate entry.",
      "Fast-mode pricing ($16/$80 per 1M tokens) is noted here rather than as a separate price tier."
    ],
    "sources": [
      {
        "label": "Anthropic announcement",
        "url": "https://www.anthropic.com/claude-fable-and-mythos-5-2"
      },
      {
        "label": "Anthropic models overview",
        "url": "https://platform.claude.com/docs/en/about-claude/models/overview"
      },
      {
        "label": "Agentic Weekly brief",
        "url": "https://theagenticweekly.com/news/claude-fable-5-2-mythos-5-2"
      }
    ],
    "url": "https://theagenticweekly.com/models/claude-fable-5-2",
    "primary_source_url": "https://www.anthropic.com/claude-fable-and-mythos-5-2",
    "anchors": {
      "facts": "https://theagenticweekly.com/models/claude-fable-5-2#facts",
      "sources": "https://theagenticweekly.com/models/claude-fable-5-2#sources",
      "tested": "https://theagenticweekly.com/models/claude-fable-5-2#tested",
      "not_verified": "https://theagenticweekly.com/models/claude-fable-5-2#left-out"
    },
    "markdown": "https://theagenticweekly.com/models/claude-fable-5-2.md",
    "api": "https://theagenticweekly.com/api/models/claude-fable-5-2"
  }
}