--- title: OpenSearch vs Elasticsearch Compared: Performance,... description: A detailed 2026 comparison of Elasticsearch 9.x and OpenSearch 3.x covering licensing, governance, performance benchmarks, vector search capabilities, AI/RAG... canonical: https://daily.dev/posts/opensearch-vs-elasticsearch-compared-performance-features-cost-2026--vufwqexwq twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: OpenSearch vs Elasticsearch Compared: Performance, Features & Cost (2026) | daily.dev og:description: A detailed 2026 comparison of Elasticsearch 9.x and OpenSearch 3.x covering licensing, governance, performance benchmarks, vector search capabilities, AI/RAG... og:url: https://daily.dev/posts/opensearch-vs-elasticsearch-compared-performance-features-cost-2026--vufwqexwq og:image: https://api.daily.dev/og/posts/VUfwQExwQ.png og:image:alt: OpenSearch vs Elasticsearch Compared: Performance, Features & Cost (2026) og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # OpenSearch vs Elasticsearch Compared: Performance, Features & Cost (2026) **[BigData Boutique blog](https://daily.dev/sources/bigdataboutique)** · 11 min read · 1 upvotes · 0 comments ## Summary A detailed 2026 comparison of Elasticsearch 9.x and OpenSearch 3.x covering licensing, governance, performance benchmarks, vector search capabilities, AI/RAG features, security, observability, and managed service pricing. Key findings: OpenSearch uses Apache 2.0 and is now governed by the Linux Foundation's OpenSearch Software Foundation; Elasticsearch offers a more integrated platform (SIEM, APM, Kibana). On vector search, OpenSearch supports Faiss and up to 16,000 dimensions vs Elasticsearch's 4,096, while Elasticsearch leads with BBQ quantization and GPU acceleration. Enterprise security features (LDAP, SAML, field-level security) are free in OpenSearch but require paid subscriptions in Elasticsearch. Amazon OpenSearch Service is typically 30-50% cheaper than Elastic Cloud. The post recommends Elasticsearch for teams already invested in the Elastic ecosystem or needing full SIEM/APM, and OpenSearch for cost-sensitive, licensing-flexible, or large-scale vector search deployments. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [OpenSearch Is Done Being Called "the Elasticsearch Fork"](https://daily.dev/posts/opensearch-is-done-being-called-the-elasticsearch-fork--1oedd9hl4) · It's Foss · 1 upvotes · 0 comments - [OpenSearch in 2025: Features, Improvements, and Community Growth](https://daily.dev/posts/opensearch-in-2025-features-improvements-and-community-growth-ymq11tig4) · BigData Boutique blog · 3 upvotes · 0 comments - [Get to know OpenSearch 3.9](https://daily.dev/posts/get-to-know-opensearch-3-9-qjzsnythj) · OpenSearch · 0 upvotes · 0 comments - [10 best OpenSearch alternatives: full comparison in 2026](https://daily.dev/posts/10-best-opensearch-alternatives-full-comparison-in-2026-cevxlquzb) · Meilisearch · 0 upvotes · 0 comments - [OpenSearch Named a Leader in GigaOm Radar for Vector Databases](https://daily.dev/posts/opensearch-named-a-leader-in-gigaom-radar-for-vector-databases-nqqelryd5) · Cloud Native Now · 0 upvotes · 0 comments --- Tags: [#azure](https://daily.dev/tags/azure), [#elk](https://daily.dev/tags/elk), [#vector-search](https://daily.dev/tags/vector-search), [#opensearch](https://daily.dev/tags/opensearch) [View this post on daily.dev](https://daily.dev/posts/opensearch-vs-elasticsearch-compared-performance-features-cost-2026--vufwqexwq) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"OpenSearch vs Elasticsearch Compared: Performance, Features \u0026 Cost (2026)","url":"https://daily.dev/posts/opensearch-vs-elasticsearch-compared-performance-features-cost-2026--vufwqexwq","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/opensearch-vs-elasticsearch-compared-performance-features-cost-2026--vufwqexwq"},"datePublished":"2026-04-13T09:24:25.027Z","dateModified":"2026-04-13T09:24:50.948Z","description":"A detailed 2026 comparison of Elasticsearch 9.x and OpenSearch 3.x covering licensing, governance, performance benchmarks, vector search capabilities, AI/RAG...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/762c5e7303c45dec667fc13882b0d5c5?_a=AQAEuop","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/762c5e7303c45dec667fc13882b0d5c5?_a=AQAEuop","isAccessibleForFree":true,"articleSection":"BigData Boutique blog","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"BigData Boutique blog","logo":"https://media.daily.dev/image/upload/s--3BDyon-q--/f_auto/v1717941801/logos/bigdataboutique","url":"https://daily.dev/sources/bigdataboutique"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/opensearch-vs-elasticsearch-compared-performance-features-cost-2026--vufwqexwq","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":1},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"azure,elk,vector-search,opensearch","timeRequired":"PT11M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"BigData Boutique blog","item":"https://daily.dev/sources/bigdataboutique"},{"@type":"ListItem","position":3,"name":"OpenSearch vs Elasticsearch Compared: Performance, Features \u0026 Cost (2026)"}]} ```