Amazon is investing an additional $5 billion in Anthropic, and may inject $20 billion more over time, a deal that deepens the companies’ ties in an increasingly competitive artificial intelligence industry.Anthropic, which makes the Claude chatbot and coding tool, plans to spend more than $100 billion over the next 10 years on Amazon’s cloud technologies and chips, the companies said in a statement on Monday. Amazon shares gained about 3% on the news in extended trading.Amazon was already one of Anthropic’s biggest backers, with prior investments totaling $8 billion. For Amazon, the partnership has given its cloud business a leading artificial intelligence model and a major customer for its home-built Trainium line of AI chips. Anthropic, meanwhile, has had access to Amazon’s massive roster of corporate clients. More than 100,000 customers run Claude models on Amazon Web Services, the companies said.