Lesson 1074 of 2116
RAG Framework Selection: LangChain, LlamaIndex, Custom
RAG frameworks accelerate prototypes and constrain production. Knowing when to use each — vs custom — matters for long-term system health.
Lesson map
What this lesson covers
Learning path
The main moves in order
- 1The premise
- 2RAG frameworks
- 3LangChain
- 4LlamaIndex
Concept cluster
Terms to connect while reading
Section 1
The premise
RAG frameworks help early; production maturity often calls for custom or hybrid approaches.
What AI does well here
- Use frameworks for prototyping and learning RAG patterns
- Evaluate framework escape hatches before committing in production
- Build custom abstractions where framework abstractions don't fit
- Maintain familiarity with both frameworks and underlying primitives
What AI cannot do
- Get framework benefits without framework constraints
- Predict perfectly when migration will be needed
- Avoid the operational burden either way
Key terms in this lesson
End-of-lesson quiz
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