promptfoo vs LangChain

Not sure which tool to pick? We've broken down the key differences between promptfoo and LangChain so you can make the right call for your workflow.

promptfoo

Eval and red-team your prompts—catch regressions and unsafe outputs before customers do.

Agent engineering platform for building LLM applications from composable parts

Browse our full directory of curated AI tools, models, and open-source repos built for solopreneurs.