AgentFlow enables orchestrating thousands of AI agents as a graph program. It provides a Python API where nodes represent codex, claude, or kimi agents connected by dependency edges, with support for parallel fanout patterns where a single node spawns multiple concurrent agent copies. The framework includes merge patterns for aggregating results and can execute pipelines locally or remotely via SSH, EC2, or ECS, supporting workflows with plan stages, parallel workers, batch merges, reviews, and synthesis.