Coordination of workflows between people using different LLM providers is the big one. You prefer Anthropic's models, your coworker swears by OpenAI's. None of

Coordination of workflows between people using different LLM providers is the big one. You prefer Anthropic's models, your coworker swears by OpenAI's. None of these companies are going to support frameworks/tools that allow agent swarms to use anything other than their own models.