Claude Mythos
Claude Mythos is "Mythos 5.5" appears 6× in the HTML (hidden h1 + logo alt text). The visible text still says 5.1. It is ranked #603 on the AI Radar, in Frontier models, first seen 5 days ago and shared in 2 posts (41.7k views).
What Claude Mythos says about itself
Our most capable model for cybersecurity and biology research.
Claude Mythos \ Anthropic Skip to main content Claude Mythos 5.1 Our most capable model class for cybersecurity and biology research. Announcements NEW Oct 6, 2026 Expanding the Cyber Verification Program Security teams can now apply for advanced cyber capabilities on Claude Opus 5.5, Claude Sonnet 5.5, Claude Mythos 5.1, and future models. View more Sep 1, 2026 Introducing Claude Mythos 5.1 Claude Mythos 5.1 is our newest Mythos-class model, with gains in cybersecurity and biology. Access remains limited to a small set of vetted organizations. View more Jul 1, 2026 Claude Mythos 5 export controls have been lifted We have restored access to…
What people said about Claude Mythos on X
🚨 Not just Mythos 5.5. Fable 5.5 already hit Azure. → http://anthropic.com/claude/mythos: "Mythos 5.5" appears 6× in the HTML (hidden h1 + logo alt text). The visible text still says 5.1 → Oct 13: claude-fable-5-5 added to LiteLLM's Azure price list → Oct 14: removed, "Azure does not list" → MLflow's Azure model…
— @chetaslua, 5 days ago · 591 likes · see the post
Fable 5.5 已经登陆 Azure 了，似乎距离推出只有一步之遥了，看看下周会不会正式发布吧。。。
— @leo114119, 4 days ago · 7 likes · see the post
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Claude Mythos in numbers
- Rank on the AI Radar: #603 of 10412
- Shared in 2 posts by 2 accounts: @chetaslua, @leo114119
- 41.7k views on those posts
- First seen 5 days ago, last shared 4 days ago
- Pricing seen by AGK Intelligence: not stated
- Market: Frontier models
FAQ
What is Claude Mythos?
"Mythos 5.5" appears 6× in the HTML (hidden h1 + logo alt text). The visible text still says 5.1 It was first shared on X 5 days ago and is ranked #603 on the AI Radar.
Is Claude Mythos free?
Pricing is not stated on the page we read.
Who shared Claude Mythos?
2 accounts on X, including @chetaslua, @leo114119, in 2 posts totalling 41.7k views.
Every post is read and classified by AGK Intelligence: what it is, which market it belongs to, and whether the link is a real tool. 65.5k posts from 5k X accounts over the last 14 days, 10.4k tools, 19 markets. New posts are collected several times an hour and the full ranking is recomputed every hour — last update 2026-11-06 16:50 UTC. Full method.