Simon Willison shares his initial impressions of the newly released Claude Fable 5, describing it as a powerful model with extensive knowledge and improved safety features compared to its predecessor. He highlights its performance in handling complex tasks and generating detailed outputs, while also noting the increased cost associated with its usage.
Claude Fable 5 has been noted for its large model size, which seems to enhance its ability to handle coding tasks with deeper knowledge of modern libraries and patterns. This could potentially be leveraged to improve AI coding workflows, especially for complex projects requiring detailed knowledge. However, the model is described as slow and expensive, and its strict guardrails may impact usability in certain scenarios.