Anthropic releases state-of-the-art AI model Claude Fable 5, and it's safe to use

Anthropic has officially launched Claude Fable 5, a Mythos-class AI model that now available to the public, and to celebrate the launch Anthropic has also reset current and weekly session limits.

The release marks a major milestone for the company, offering users unprecedented access to a powerful system that balances performance with safety. Anthropic explains in its blog and a series of videos that after it conducted its preview of the Mythos model and discovered thousands of cybersecurity vulnerabilities, which meant the Mythos model could be used for nefarious practices if used by the wrong hands. So, Anthropic created a new model based on the Mythos model, but implemented safeguards.

Fable 5's capabilities surpass those of previous models, excelling in complex reasoning, natural language understanding, and multi-step problem solving. According to Anthropic, the model has been made safe for general use while retaining the advanced features of its Mythos sibling. The company also writes that if users begin asking questions in the following areas Fable will detect the line of questioning and prevent any misuse of its capabilities. Those areas are: cybersecurity, biology, chemistry, and distillation.

This release positions Anthropic at the forefront of AI arms race. With Fable 5, the company is making a push to democratize access to high-level AI tools while maintaining ethical guardrails. This approach contrasts with the more restricted access of the Mythos series, which is typically reserved for enterprise and research use.

"Fable 5's capabilities exceed those of any model we've ever made generally available. It is state-of-the-art on nearly all tested benchmarks of AI capability, showing exceptional performance in software engineering, knowledge work, vision, scientific research, and many other areas. The longer and more complex the task, the larger Fable 5's lead over our other models," wrote Anthropic in a blog post