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Claude Fable 5.1 Launches with Significant Cost Reductions

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Anthropic has unveiled Claude Fable 5.1, a new AI model that promises up to 45% cost savings for complex tasks, enhancing its coding and problem-solving capabilities. The model is designed to better understand data subtleties, with early feedback highlighting its effectiveness in identifying software vulnerabilities while reducing false positives in cybersecurity filters by 60%.

Key points

Mythos 5.1 is launching exclusively for Project Glasswing participants, focusing on cybersecurity and life sciences.

Fable 5.1 is priced approximately 25% lower than its predecessor for typical workloads.

The model's advanced capabilities resolved a long-standing crash issue for Millennium that had previously stumped engineers.

Timeline

Blog

Anthropic launches Claude Fable 5.1 and says it’s up to 45 percent cheaper for agentic work

Anthropic opens Claude AI text detection to regulators, media, fact-checkers, and others

Anthropic's Claude Fable 5.1 promises better coding and research at up to 45 percent less

Anthropic’s new Fable release is cheaper, less restrictive

Anthropic upgrades Claude with new Fable 5.1 model, details here