Fable won’t answer basic biology questions

Anthropic released Claude Fable 5, touting it as the most powerful publicly available AI model with strong biology capabilities. Yet the model refuses to answer basic biology questions, handing the query over to the previous flagship model, Claude Opus 4.8, due to a design limitation rather than a knowledge gap.

Summary written by Kernelia from the original article by The Verge — AI. The story and its rights belong to its author.