Improve RAG Chatbot Accuracy: Overlapping Text Chunk StrategyImprove RAG Chatbot Accuracy: Overlapping Text Chunk Strategy
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Most RAG chatbots give wrong answers. Here's why 👇
The problem isn't the LLM. It's how documents are chunked.
Most developers split text like this: Every 500 tokens → new chunk. Done.
The result? One sentence is in chunk 3. The next related sentence is in chunk 4. The chatbot retrieves only one — and gives a half-answer.
The fix is simple: overlap your chunks.
Instead of hard splits, let each chunk share 50-100 tokens with the next one. Context stays connected. Answers get accurate.
I ran into this exact issue while building a RAG system for document Q&A. Switched to overlapping chunks — accuracy improved immediately.
Small change. Big difference.
Building something with RAG or AI Development? Drop your question below 👇
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