The question that matters: “In what situation will I regret choosing A over B after 3 months?”
Scenario: Multi-Modal Search Across Text and
Weaviate
Multi-Modal Search Across Text and Images in One Index
Weaviate's multi2vec module indexes text and image objects in the same collection, enabling cross-modal search where a text query returns images and vice versa without separate pipelines.
Qdrant
Payload-Based Filtered Vector Search at Full Speed
Qdrant's HNSW indexes integrate payload filtering natively, executing filtered nearest-neighbor search without a post-filter scan step, maintaining sub-50ms latency on complex metadata filters.
Scenario: Generative Search: Retrieve and Generate
Weaviate
Generative Search: Retrieve and Generate in One Query
Weaviate's Generative Search module passes retrieved objects directly to an LLM within the same query, cutting latency by eliminating a separate LLM API call for RAG retrieval-generation pipelines.
Qdrant
Sparse Vector Support for Hybrid Lexical-Semantic Search
Qdrant supports sparse vectors natively alongside dense vectors, enabling BM25 and embedding search in the same collection for hybrid retrieval without maintaining two separate indexes.
Weaviate Unique Strength
Schema-Enforced Filtered Vector Search on Metadata
Weaviate's structured schema enforces data types on vector objects, enabling filtered vector search that combines nearest neighbor with exact property matches and reducing false positives in metadata-sensitive retrieval.
→ Choose Weaviate if this scenario applies to you. Qdrant doesn't offer a comparable solution.
Qdrant Unique Strength
On-Disk Indexing for Large Collections Without RAM Scaling
Qdrant's on-disk HNSW stores vectors on SSD while keeping only graph navigation data in RAM, serving collections larger than server memory at acceptable latency for cost-sensitive deployments.
→ Choose Qdrant if this scenario applies to you. Weaviate doesn't offer a comparable solution.