OpenSearch 3.8: 4x vector ingestion, 2x radial search, MCP for all agents
OpenSearch 3.8 ships Base64 vector ingestion that cuts network payloads by 74% and boosts bulk throughput up to 4.16x, plus a redesigned radial-search traversal delivering 2.1x query throughput with higher recall. MCP integration now spans all agent types, and gRPC streaming inference lowers token latency.