Index Rebuild Tax

The Index Rebuild Tax is the hidden cost of changing embedding models after a vector database is in production. Every stored vector is tied to the model that generated it, so swapping models means re-embedding the entire corpus and rebuilding the index, not just pointing at a new endpoint. For agencies, this tax lands mid-retainer: a client asks for better semantic search, and the delivery team discovers the migration is a multi-week project rather than a config change. Qdrant's dense-sparse hybrid search and Meilisearch's combined full-text and semantic modes both reduce exposure by letting teams improve relevance without abandoning existing vectors. RagLeap v0.4.0 now supports 9 vector databases, which lowers the switching penalty at the framework layer but does nothing for the embeddings already stored. Budget the rebuild before promising a model upgrade.