Grok 4 Multi-Agent Architecture: Dev Guide 2026

Most AI providers in 2026 give you a single model and let you build multi-agent systems yourself. That means writing orchestration code, managing inter-agent communication, handling failures, and paying for four separate API calls to get four perspectives. xAI took a different approach with Grok 4.20: bake the multi-agent architecture directly into inference. The result is an AI model where four specialized agents debate every complex query internally before handing you a single answer — at rou...