More than a quarter of Anthropic PBC’s research and development work for artificial intelligence is driven by its Claude chatbot, according to the company, providing the clearest indication yet that AI can help speed up development of future models.Anthropic found Claude “leads” 26% of Anthropic’s R&D, up from effectively nothing at the start of the year, according to a report released Thursday. The AI developer said Claude also collaborates with staffers for about 90% of their work....