MetaGPT simulates a software company by assigning specialized roles to AI agents. With 56K+ GitHub stars, it is one of the most innovative multi-agent frameworks.
Roles include product manager, architect, project manager, engineer, and QA. Given a requirement, it produces PRDs, system designs, API specs, and working code through structured collaboration.
Agents communicate via structured outputs rather than free-form chat, mimicking real engineering processes for more reliable results.
Supports incremental development, human feedback, and experience-based learning. Free and open-source with multiple LLM backends.