Index Legal Documents for Hybrid Search with Qdrant, OpenAI & BM25

Index Legal Dataset to Qdrant for Hybrid Retrieval This pipeline is the first part of "Hybrid Search with Qdrant & n8n, Legal AI"**.
The second part, "Hybrid Search with Qdrant & n8n, Legal AI: Retrieval", covers retrieval and simple evaluation.

Overview This pipeline transforms a Q&A legal corpus from Hugging Face (isaacus) into vector representations and indexes them to Qdrant, providing the foundation for running Hybrid Search, combining:

Dense vectors (embeddings) for semantic similarity search;
Sparse vectors for keyword-based exact search.

After running this pipeline, you will have a Qdrant collection with your legal dataset ready for hybrid retrieval on BM25 and dense embeddings: either mxbai-embed-large-v1 or text-embedding-3-small.

Options for Embedding Inference This pipeline equips you with two approaches for generating dense vectors:

Using Qdrant Cloud Inference, conversion to vectors handled directly in Qdrant; Using external provider, e.g. OpenAI for generating embeddings.

Prerequisites A cluster on Qdrant Cloud
Paid cluster in the US region if you want to use Qdrant Cloud Inference
Free Tier Cluster if using an external provider (here OpenAI)
Qdrant Cluster credentials: You'll be guided on how to obtain both the URL and API_KEY from the Qdrant Cloud UI when setting up your cluster;
An OpenAI API key (if you’re not using Qdrant’s Cloud Inference);

P.S. To ask retrieval in Qdrant-related questions, join the Qdrant Discord.
Star Qdrant n8n community node repo <3