Weaviate v1.38 is now available open-source and on Weaviate Cloud.

Two capabilities reach general availability in this release: the HFresh disk-based vector index and the built-in MCP Server. Async replication has been rebuilt to run cluster-wide from a single scheduler, and it now runs by default on every replicated collection. Two new previews join them: the Boost API for query-time rescoring and Nested Object Filtering.

Here are the release highlights!

HFresh Vector Index - General Availability

MCP Server - General Availability