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OpenSearch:Release notes

Last Updated:Apr 01, 2026

This page lists the release history of OpenSearch LLM-Based Conversational Search Edition.

2024

June

Release dateFeatureTypeDescription
2024-06-20Model evaluation and conversational search effect comparisonNewUpload question and reference answer sets in batches to evaluate conversation quality. Configure parameters and compare evaluation scores across different configurations to optimize the retrieval-augmented generation (RAG) system.

May

Release dateFeatureTypeDescription
2024-05-07Reference image upgrade, image analysis, and multi-image returnNewA multi-modal large language model (LLM) now identifies and analyzes image content in documents and indexes it into knowledge bases for search and content generation. Multiple reference images can be returned in a single response—useful for documents with many images, flowcharts, or e-commerce shopping guides.

April

Release dateFeatureTypeDescription
2024-04-30Updated slicing policy, more accurate search results, and higher recall rateOptimizedDocument analysis and slicing policies are updated. Single sentence slicing and semantic slicing can now be used together, improving document comprehension, search accuracy, and recall rate.
2024-04-08Support for the subscription billing methodNewPay for storage capacity and GPU rental by year or month. Computing resources continue to be charged using the pay-as-you-go billing method.

2023

December

Release dateFeatureTypeDescription
2023-12-26Table-based conversational search and support for the MaxCompute data sourceNewQuery structured data in tables. Synchronize structured data from MaxCompute and other data sources.

November

Release dateFeatureTypeDescription
2023-11-27Document summaryNewSummarize the content of a document.
2023-11-16Professional Edition and DingTalk and Lark chatbotsNewThe Professional Edition is now available, with support for custom LLMs and integration with DingTalk and Lark chatbots.

September

Release dateFeatureTypeDescription
2023-09-07Service release in the Singapore regionNewOpenSearch LLM-Based Conversational Search Edition is now available in the Singapore region.

August

Release dateFeatureTypeDescription
2023-08-23Multi-round conversations and custom prompt parametersNewEnable multi-round conversations and customize prompt parameters.
2023-08-11Model selection, optimized unstructured data import, and intervention in conversational search testsNew and optimizedSelect from multiple models. Modify unstructured data. Reference images and reference links are now supported during intervention in conversational search tests.

July

Release dateFeatureTypeDescription
2023-07-27CU resource plans and new SDKNewResource plans measured in compute units (CUs) are now available. The Python SDK is now supported. By default, the console shows data imported within the previous three days.
2023-07-13Improved unstructured data importNew and optimizedHTML tags are now automatically removed and images in unstructured documents are recognized. Timestamp and score fields are added to sort results by time and score. Data can be precisely queried by title and category. The redirection issue is fixed, and the conversational search test interaction is improved.

June

Release dateFeatureTypeDescription
2023-06-30Unstructured data importNewImport unstructured documents in DOC, DOCX, PDF, and HTML formats.
2023-06-19Service release for public previewNewOpenSearch LLM-Based Conversational Search Edition is released for public preview. Billing information is now available.
2023-06-08Reference images and reference linksNewSave image URLs in document content. Reference images are returned in conversational search tests.

May

Release dateFeatureTypeDescription
2023-05-26Service release for invitational previewNewOpenSearch LLM-Based Conversational Search Edition is released for invitational preview.