An artificial intelligence startup that helps developers write and debug code is now worth nearly as much as United Airlines. A two-month-old AI computer company raised a massive $475 million seed round, with plans to secure even more financing soon. And a platform for ranking AI models is now valued at nearly $2 billion, less than a year after it was spun out of an academic project.The exuberance for all things AI has rapidly spilled over into the normally staid field of developer tools, benchm...