The value is the UX/DevX. Though, they are essentially just a fork of VS Code so it's hard to justify using instead of VS Code + Copilot or Continue which is almost the same UX now.
That's the problem with most "AI" products/companies that still isn't being answered. Why do people use your tool/service if you don't own the LLM which is most of the underlying "engine"? And further, how do you stay competitive when your LLM provider starts to scale RL with whatever prompting tricks you're doing, making your product obsolete?
You're incorrect. 4o was not trained on knowledge of itself so literally can't tell you that. What 4o is doing isn't even new either, Gemini 2.0 has the same capability.
"Purple hair", "retarded", "media bad", "post 1945 order".