Amazon OpenSearch Service now supports OpenSearch version 3.5

This article announces that Amazon OpenSearch Service now supports OpenSearch version 3.5, featuring significant improvements in agentic AI, search relevance, and observability.

• Agentic conversation memory captures context and tool reasoning for multi-turn conversations
• Context management optimizes LLM inputs through automatic truncation and summarization
• No-code agent interface supports Model Context Protocol integration and conversational memory
• Expanded search relevance workbench with LLM-powered evaluation for quality assessment
• Scheduled experiments track search quality trends and detect regressions automatically
• Enhanced single query comparison displays agentic search queries with agent summaries
• Available in all AWS Regions where Amazon OpenSearch Service operates

OpenSearch 3.5 enables building sophisticated agentic applications with improved search quality and reduced token costs.