Buffer queues the post — but doesn't create the content
Buffer is a simple, affordable scheduler; it's good at queuing and publishing a post. Its free tier is limited to three channels and ten posts per channel, and paid plans start at a few dollars per channel. What it does is clear: it takes ready content, plans it, publishes it.
But who will create the content? The one writing the copy and preparing the visual and video is still you. That's AgentFabrica's difference: the content is produced here too. You give a brief, the engine produces, plans and publishes. Not a scheduler, but a system that creates.