DevGuild: The Long Horizon Stack

We’re all running agent factories for local, bounded, and cheaply verifiable actions. But the problem with agents is that the more we extend their reach and runtime, the more they disappoint us. Time and scale lead to inconsistent performance, costs, and quality of output. This isn’t just a case for better scoping or larger context windows, it’s a need to rewrite damn near everything. Heavybit’s DevGuild: Long-Horizon Stack is a one-day, invite-only gathering of 200 founders and infrastructure owners building long-running agents for the enterprise. We’ll hear from speakers and attendees dedicated to solving the hard problems around memory, goal orchestration, durable execution, learning cycles, and new tool chains. This is your chance to shape the essential agent operating system. Join us.