How Powerful is Claude Fable (Mythos) 5 for Coding?

Anthropic executives have submitted a proposal to Commerce Secretary Howard Lutnick to lift the US ban on its powerful Mythos and Fable AI models. The company is working to resolve security concerns that led to the initial crackdown and has pledged closer cooperation with the Trump administration. Meanwhile, discussions continue regarding the specific capabilities, including the coding strengths and weaknesses, of the Claude Fable 5 model as detailed in reports from Towards Data Science.