Build agent workflows with tools, memory, and retrieval.
Use LangChain when one workflow needs to coordinate models, tools, and context.
Check if this matches what you need right now.
Look at price and setup together.
Teams that need workflow control
If your workflow is already clear, keep this on your shortlist.
Best for teams that want more control than a simple prompt chain can give.
LangChain is one of the most common starting points for agent-style products. It is a good fit when you need tool calls, retrieval, memory, or multi-step orchestration in one place.
Use LangGraph when an agent needs state, approvals, or retryable steps.
Use LlamaIndex when your product depends on search, documents, or private knowledge.
A fast starting point for teams building AI features.
A good fit for writing, analysis, and long-context workflows.
How to move from a promising AI demo to a workflow you can actually operate.
These words sound similar, but they solve different levels of the same problem.
A simple way to compare agent tools before you commit to one.
A plain-language guide to telling an AI agent apart from a normal chatbot, and deciding whether you need one now or later.
A plain-language guide to telling an AI agent apart from a normal chatbot, and deciding whether you need one now or later.
If you are still learning what AI is useful for, stay with finished apps. API choice only becomes relevant once AI has to fit inside your own system or repeat at scale.