Anthropic released Fable 5.1, an upgraded version of its most powerful AI model. The company estimates the model is 25% cheaper than its predecessor for typical workloads. Complex, multi-step agentic tasks see cost reductions of up to 45%. Lower pricing for cache reads enables these savings.
The model sets new standards for coding, knowledge work, and scientific problem-solving. Improved safeguards reduce the flagging of benign content. New enterprise features offer enhanced data privacy through a zero data retention policy.
This release responds to enterprise demand for cost-effective AI solutions. Anthropic is positioning the model to compete with rivals OpenAI and Google.