Anthropic Releases Fable 5, Publicly Accessible Mythos-Class AI
Anthropic has launched Claude Fable 5, a "Mythos-class" AI model deemed safe for public use. It offers advanced capabilities, particularly in software engineering and complex tasks, exceeding previous models. Safeguards are in place, rerouting sensitive queries to Claude Opus 4.8, with triggers in less than 5% of sessions. An unrestricted version, Mythos 5, is available to select partners.
Key points
- Claude Fable 5 is a "Mythos-class" AI model now available to the public.
- Safeguards reroute sensitive queries (e.g., cybersecurity, biology, chemistry) to Claude Opus 4.8.
- Safeguards are conservatively tuned, triggering in less than 5% of sessions on average.
- The unrestricted Claude Mythos 5 is available to select partners, including cybersecurity firms.
- Fable 5 pricing is $10 per million input tokens and $50 per million output tokens.
Anthropic has released Claude Fable 5, a "Mythos-class" artificial intelligence model designed for general use. This new model reportedly offers capabilities exceeding Anthropic's previously released AI systems, demonstrating exceptional performance in areas such as software engineering, knowledge work, and scientific research, particularly on longer and more complex tasks.
To address potential risks associated with its advanced capabilities, Fable 5 includes integrated safeguards. Queries related to sensitive topics like cybersecurity, biology, and chemistry are automatically rerouted to Claude Opus 4.8. Anthropic states these safeguards are conservatively tuned and are expected to trigger in less than five percent of user sessions. Concurrently, an unrestricted version, Claude Mythos 5, is being provided to a select group of cybersecurity partners and infrastructure providers, continuing their involvement in Project Glasswing.
Fable 5 is priced at $10 per million input tokens and $50 per million output tokens. Initially, it was offered without extra cost for certain subscription tiers until June 22, after which usage credits will be required.
Sources
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