Anthropic rolls out a paid subscription plan, Claude Pro, for its AI chat assistant Claude.ai. For a monthly fee of $20 in the US or £18 in the UK, Claude Pro subscribers have access to extended features, including longer context windows and faster output times. The plan also promises five times more usage of the company's latest model, Claude 2, and offers priority access during high-traffic periods. The service aims to assist users in a variety of tasks, such as summarizing research papers and coding projects.