The main difference between langchain and LLMFlows is in the philosophy - langchain has a "chain for everything" approach where chains come with multiple LLM calls, opinionated internal logic, and built-in default prompts. On the other hand llmflows has a "simple, explicit, transparent" approach where the goal is to allow developers to easily build their own chains (or flows) and have full control and transparency over the apps.

If you are curious check out the intro section of this blog post I made some time ago: https://llmflows.substack.com/p/introduction-to-llmflows