Anthropic has announced two new AI models, Claude Fable 5.1 and Mythos 5.1. The company says the update responds to customer criticisms around pricing, data retention, and overly restrictive safeguards.
According to Anthropic, Fable 5.1 delivers stronger performance than its predecessor, Fable 5, while typically costing around 25 percent less and up to 45 percent less for complex agentic tasks. The company attributes the savings to reduced pricing on cached data that has already been processed and stored. Early impressions accompanied the launch, including remarks from Every CEO Dan Shipper, who described it as the strongest coding model his team has used and noted it is fast and token-efficient.
Why it matters
Lower costs for agentic workloads and cached data could affect how teams budget for AI-driven automation and coding tasks. The stated focus on data retention and safeguards also addresses concerns previously raised by customers.
Who should care
Developers and organizations using Claude for coding or agentic workflows may want to evaluate the pricing and performance changes described.