Anthropic PBC is releasing a new version of its powerful Fable artificial intelligence model that it says is better at coding and science tasks, as well as more economical — all changes it says are in response to customer feedback. The company said Fable 5.1, which it plans to release on Tuesday, is more skilled at carrying out lengthy, complicated computer programming tasks, such as software projects or code reviews that require it to work across all the code for an application. The new version...