Anthropic’s new AI model is powerful, dazzling—and about to get really expensive

Anthropic has released Claude Fable 5, its most powerful public AI model to date. Built on the Mythos-class architecture, Fable 5 represents a significant leap in capability, exceeding previous models and sitting above the Opus family. To ensure safety, Anthropic implemented stringent guardrails to prevent high-risk applications. While users describe it as a step change in handling complex tasks, the model is expected to become significantly more expensive for most users within two weeks.