Grok 4.20 Beta Ships a Council of Four AI Agents Inside Every Response
Most multi-agent AI systems are built by developers — frameworks assembled from components, with agents spawned programmatically, each given a role, each calling the others through APIs or queues. It’s architected software. What xAI shipped in mid-February is something structurally different: a model where the multi-agent council isn’t something you build around — it’s something that runs inside every response. Grok 4.20 Beta launched with four named agents — Grok, Harper, Benjamin, and Lucas — that execute a think-then-debate-then-consensus loop as part of the model’s native inference process. For queries below a complexity threshold, users may never notice the agents working. For hard problems, the loop is engaged automatically: agents independently reason about the problem, challenge each other’s conclusions, and surface a synthesized answer. You don’t configure this. It just runs. ...