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FIRST SEEN 23D AGO
ANTHRPSHIPS

Anthropic releases Claude Fable 5 as first public Mythos-class model with safety guardrails

Anthropic released Claude Fable 5, its first Mythos-class model available to the public, alongside the restricted Claude Mythos 5 for trusted partners. Fable 5 includes safety guardrails blocking high-risk outputs in cybersecurity and biology, while Mythos 5 is offered to cyber defense organizations.

Sources
11
X mentions
684k
First seen
23Dago
Velocity
+23%/6h
CONTRIBUTING SOURCES
18 ARTICLES
  1. Vercel Blog23D AGO
    vercel.com/changelog/claude-fable-5-now-available-on-ai-gateway
  2. Hacker News (front, AI-filtered)23D AGO
    www.anthropic.com/news/claude-fable-5-mythos-5
  3. Hacker News (front, AI-filtered)23D AGO
    www-cdn.anthropic.com/d00db56fa754a1b115b6dd7cb2e3c342ee809620.pdf
  4. TechCrunch AI23D AGO
    techcrunch.com/2026/06/09/anthropics-claude-fable-5-is-a-version-of-mythos-the-public-can-access-today
  5. The Verge AI23D AGO
    www.theverge.com/news/946725/anthropic-releases-claude-fable-5-mythos
  6. TechCrunch AI23D AGO
    techcrunch.com/2026/06/09/anthropic-released-claude-fable-5-its-most-powerful-model-publicly-days-after-warning-ai-is-getting-too-dangerous
  7. WIRED AI23D AGO
    www.wired.com/story/anthropic-releases-claude-fable-5-mythos-5
  8. One Useful Thing (Ethan Mollick)23D AGO
    www.oneusefulthing.org/p/what-it-feels-like-to-work-with-mythos
  9. Simon Willison23D AGO
    simonwillison.net/2026/Jun/9/andrej-karpathy
  10. Ars Technica AI23D AGO
    arstechnica.com/ai/2026/06/anthropic-says-these-topics-are-too-dangerous-to-let-its-fable-5-model-talk-about
  11. The Verge AI23D AGO
    www.theverge.com/tech/947197/microsoft-ai-mustafa-suleyman-anthropic-claude-conscious
  12. TechCrunch AI23D AGO
    techcrunch.com/2026/06/09/anthropics-fable-5-can-make-weirdly-fun-video-games-with-the-click-of-a-button
  13. SCMP Tech23D AGO
    www.scmp.com/news/world/united-states-canada/article/3356555/anthropic-opens-powerful-mythos-ai-model-public-some-safeguards
  14. Hacker News (front, AI-filtered)23D AGO
    jonready.com/blog/posts/claude-fable5-is-allowed-to-sabotage-your-app-if-youre-a-competitor.html
  15. Simon Willison23D AGO
    simonwillison.net/2026/Jun/9/agentsview-custom-model-price
  16. Interconnects (Nathan Lambert)23D AGO
    www.interconnects.ai/p/claude-fable-5-and-new-ai-safety
  17. X (Twitter)23D AGO
    x.com/AnthropicAI/status/2064394443856232582
  18. X (Twitter)23D AGO
    x.com/NousResearch/status/2064425527360774216
X DISCOURSE
684k TOTAL · TOP 3
@AnthropicAI3H · 2503.8K
The US government, citing national security authorities, has issued an export control directive to suspend all access to Fable 5 and Mythos 5 by any foreign national, whether inside or outside the United States, including foreign national Anthropic employees. The net effect of this order is that we must abruptly disable Fable 5 and Mythos 5 for all our customers to ensure compliance. Access to all other Claude models is not affected. We apologize for this disruption to our customers. We believe this is a misunderstanding and are working to restore access as soon as possible. Read our full statement: https://t.co/bwn0sximKZ
@AnthropicAI23H · 2198.4K
The US government, citing national security authorities, has issued an export control directive to suspend all access to Fable 5 and Mythos 5 by any foreign national, whether inside or outside the United States, including foreign national Anthropic employees. The net effect of this order is that we must abruptly disable Fable 5 and Mythos 5 for all our customers to ensure compliance. Access to all other Claude models is not affected. We apologize for this disruption to our customers. We believe this is a misunderstanding and are working to restore access as soon as possible. Read our full statement: https://t.co/bwn0sximKZ
@AnthropicAI2D · 2006.8K
The US government, citing national security authorities, has issued an export control directive to suspend all access to Fable 5 and Mythos 5 by any foreign national, whether inside or outside the United States, including foreign national Anthropic employees. The net effect of this order is that we must abruptly disable Fable 5 and Mythos 5 for all our customers to ensure compliance. Access to all other Claude models is not affected. We apologize for this disruption to our customers. We believe this is a misunderstanding and are working to restore access as soon as possible. Read our full statement: https://t.co/bwn0sximKZ