DeerFlow's Real Contribution Is Not Deep Research. It Is the Super Agent Harness Nobody Else Built.
DeerFlow v2.0 (bytedance/deer-flow, 68k stars, MIT) is a ground-up rewrite that shares zero code with v1.x. Version 1 was a single deep research pipeline. Version 2 is a super agent harness: an orchestration system that manages sub-agents, sandboxed code execution, long-term memory, and extensible skill packages, handling tasks that take minutes to hours rather than seconds.