The updated OpenSearch enables persistent storage of conversation context and reasoning, supporting coherent multi-turn AI agent dialogues. Context management features reduce token usage by automatic truncation and summarization, optimizing large language model interactions. The redesigned no-code interface allows building sophisticated agents without programming.
Search relevance workbench now includes LLM-powered automated evaluation and scheduled testing to track performance trends and detect regressions. Enhanced query comparison views assist tuning search quality. OpenSearch 3.5 is available in all AWS regions supporting OpenSearch Service, facilitating immediate adoption of these advancements by customers.
Source & further reading
Amazon OpenSearch Service now supports OpenSearch version 3.5 ↗Source published 2026-03-18. This report was prepared with AI assistance from the linked primary-source material. Claims and limitations should be checked against the original announcement or research.