Independent tracker. Not affiliated with, endorsed by, or sponsored by Anthropic PBC. “Claude”, “Mythos”, and “Fable” are referenced for identification only. Full disclaimer.

MythosTracker Fable 5: Suspended

Canonical saga

The Mythos timeline

Every verified milestone in Anthropic’s Mythos-class story, newest first — from the Glasswing preview to the launch of Fable 5 and Mythos 5 and the export-control suspension that followed. Curated anchors are augmented automatically as new reporting lands. For definitions, see mythoslm.ai.

23 milestones · latest Jun 29, 2026

  1. Launch

    Anthropic Finally Got US Approval To Launch Mythos 5 – Sort Of

    Release coverage from Finimize: "Anthropic Finally Got US Approval To Launch Mythos 5 – Sort Of." See the original report for full details via the source link below.

    Source: Finimize

  2. Policy

    Claude Fable 5 restored for International customers by…? ... 2026

    Status update reported by polymarket.com: "Claude Fable 5 restored for International customers by…? ... 2026." See the original report for full details via the source link below.

    Source: polymarket.com

  3. Launch

    Gemini 3.5 Pro Cleared for July Launch as Fable 5 Nears Return, GPT-5.6 Stays Locked

    Release coverage from Tech Times: "Gemini 3.5 Pro Cleared for July Launch as Fable 5 Nears Return, GPT-5.6 Stays Locked." See the original report for full details via the source link below.

    Source: Tech Times

  4. Policy

    Trump Administration Eases AI Restrictions, Allowing Anthropic to Restore Limited Access to Mythos 5

    Status update reported by citybiz: "Trump Administration Eases AI Restrictions, Allowing Anthropic to Restore Limited Access to Mythos 5." See the original report for full details via the source link below.

    Source: citybiz

  5. Policy

    Anthropic restores access to Mythos 5 for select organizations

    Status update reported by thestreet.com: "Anthropic restores access to Mythos 5 for select organizations." See the original report for full details via the source link below.

    Source: thestreet.com

  6. Launch

    Anthropic Just Released The AI They Said Was Too Dangerous | Claude Fable 5 & Mythos Explained Santiago Espinal (EZGK8eAXa4)

    Release coverage from Mshale: "Anthropic Just Released The AI They Said Was Too Dangerous | Claude Fable 5 & Mythos Explained Santiago Espinal (EZGK8eAXa4)." See the original report for full details via the source link below.

    Source: Mshale

  7. Policy

    Anthropic Gets Greenlight From US to Restore Mythos Access

    Status update reported by PYMNTS.com: "Anthropic Gets Greenlight From US to Restore Mythos Access." See the original report for full details via the source link below.

    Source: PYMNTS.com

  8. Policy

    Anthropic Restores Fable 5 After US Ban

    Status update reported by Let's Data Science: "Anthropic Restores Fable 5 After US Ban." See the original report for full details via the source link below.

    Source: Let's Data Science

  9. Policy

    Why AI models like Claude Fable and Mythos defy traditional export control frameworks

    Status update reported by Bulletin of the Atomic Scientists: "Why AI models like Claude Fable and Mythos defy traditional export control frameworks." See the original report for full details via the source link below.

    Source: Bulletin of the Atomic Scientists

  10. Launch

    Anthropic Just Released Claude Fable 5 & Mythos 5! Stock Market (uVyMGxaOlU)

    Release coverage from Mshale: "Anthropic Just Released Claude Fable 5 & Mythos 5! Stock Market (uVyMGxaOlU)." See the original report for full details via the source link below.

    Source: Mshale

  11. Policy

    Anthropic soon to win U.S. clearance to restore Fable 5: Axios

    Status update reported by Seeking Alpha: "Anthropic soon to win U.S. clearance to restore Fable 5: Axios." See the original report for full details via the source link below.

    Source: Seeking Alpha

  12. Policy

    Anthropic Restores Claude Mythos 5 for Critical US Organizations

    Status update reported by Red Hot Cyber: "Anthropic Restores Claude Mythos 5 for Critical US Organizations." See the original report for full details via the source link below.

    Source: Red Hot Cyber

  13. Launch

    Anthropic Just Released Claude Fable 5 & Mythos 5! Trade Republic (tFYyJj5UKc)

    Release coverage from Mshale: "Anthropic Just Released Claude Fable 5 & Mythos 5! Trade Republic (tFYyJj5UKc)." See the original report for full details via the source link below.

    Source: Mshale

  14. Policy

    Anthropic wins US approval to restore access to Mythos 5 AI model

    Status update reported by Crypto Briefing: "Anthropic wins US approval to restore access to Mythos 5 AI model." See the original report for full details via the source link below.

    Source: Crypto Briefing

  15. Policy

    Anthropic cleared to restore Mythos 5 access to certain US organisations

    Status update reported by Euronews: "Anthropic cleared to restore Mythos 5 access to certain US organisations." See the original report for full details via the source link below.

    Source: Euronews.com

  16. Launch

    Asian AI startups launch Mythos-like models

    Release coverage from techcrunch.com: "Asian AI startups launch Mythos-like models." See the original report for full details via the source link below.

    Source: techcrunch.com

  17. Policy

    US close to allowing Anthropic to restore Fable 5 model, Axios reports

    Status update reported by TradingView: "US close to allowing Anthropic to restore Fable 5 model, Axios reports." See the original report for full details via the source link below.

    Source: TradingView

  18. Policy

    US Allowed Anthropic to Partially Restore Access to Mythos 5

    Status update reported by incrypted: "US Allowed Anthropic to Partially Restore Access to Mythos 5." See the original report for full details via the source link below.

    Source: incrypted

  19. Policy

    Status page logs the suspension as an active incident

    The Anthropic status board records an active incident — "We’ve suspended access to Claude Mythos 5 and Claude Fable 5" — affecting claude.ai, the Claude API, and Claude Code, and links to the access statement.

    Source: Anthropic status page

  20. Policy

    US export-control directive suspends Fable 5 and Mythos 5

    Anthropic issues a statement on a US government export-control directive suspending all access to Fable 5 and Mythos 5. The company says it intends to restore Fable 5 to subscription plans when capacity and clearance allow.

    Source: Anthropic

  21. Launch

    Claude Fable 5 and Claude Mythos 5 launch

    Anthropic releases Fable 5 and Mythos 5 — the same underlying model, differentiated by safeguards. Fable 5 ships with safety classifiers that reroute flagged requests to Claude Opus 4.8; Mythos 5 lifts those classifiers under Glasswing-only access.

    Source: Anthropic

  22. Pricing

    Fable 5 reaches general availability and free intro window opens

    Fable 5 becomes available on the Claude API, the Claude Platform on AWS, Amazon Bedrock, Google Cloud, and Microsoft Foundry, with 1M-token context and up to 128k output. It is free for Pro, Max, Team, and Enterprise plans through June 22, with usage-based pricing after June 23.

    Source: Anthropic

  23. Launch

    Claude Mythos Preview ships via Project Glasswing

    The first Mythos-class model — a tier above Opus — reaches roughly 50 selected organizations in cyberdefense and critical infrastructure, including the US government, under the limited-access Project Glasswing program.

    Source: Anthropic

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