I mean, they're cheaper models and they aren't as much if a pain about rate limiting as Claude was/they have a pretty solid depenresesrch without restrictive usage limits. IDK how it is for long running agentic stuff, would be surprised if it was anywhere near the other models, but for a general chatgpt competitor it doesn't matter if it's not as good as opus 4 if it's way cheaper and won't use up your usage limit