Langflow

A linear, one-concept-per-lesson path through Langflow, the visual low-code layer for building LLM flows, from your first drag-and-drop flow to graduating a prototype into production code. 22 lessons · 3 tiers.

Prerequisites: Completion of LangChain & Agent Building, or already comfortable with .invoke(), prompts, and tools - the model/prompt lessons assume this.

Lessons use Google's Gemini free tier (gemini-3.5-flash-lite), the same model as every other course, no prepaid API credits needed.

Built on Langflow, the open-source framework this course teaches.