fx.sh can reportedly coordinate subagents using different AI models

A user says fx.sh can now coordinate subagents—AI agents handling parts of a task—with different models and reasoning efforts. Their example pairs Fable for planning with Grok for execution. According to the post, users can indicate those preferences in AGENTS.md or a prompt, then steer or interrupt the agent as it works. The author says this works with any model and any gateway, without “fancy server-side routing.”