OpenSearch Project Blog

Your source for OpenSearch updates, community news, and technical insights.

OpenSearch 3.6 release

Introducing OpenSearch 3.6

April 7, 2026
OpenSearch 3.6 delivers agent-powered search and observability. Deploy full-stack monitoring in minutes, automate relevance tuning, and build search apps with AI-guided workflows.

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Performance Search Vector

Lucene HNSW performance: A deep dive into the OS page cache

February 9, 2026
Optimize Lucene HNSW vector search in OpenSearch with OS page cache and RAM tuning. Achieve CPU-bound performance for semantic search, RAG, and LLM applications globally.