Amazon OpenSearch Service Expands to Graviton4-Based Instance Families

Amazon OpenSearch Service added support for compute, general-purpose, and memory-optimized instances using AWS Graviton4 processors.

By Victor Hale · Editorial pseudonym · 2026-02-18 · 1 min read

AI-ASSISTED REPORTING · RETROSPECTIVE ARCHIVE

Retrospective edition: 2026-02-18. Source published: 2026-02-18. Added to this archive: 2026-11-03. This briefing was prepared later from the linked announcement; it was not published on this website on the historical edition date.

The introduction of c8g (compute optimized), m8g (general purpose), and r8g/r8gd (memory optimized) Amazon EC2 instances powered by Graviton4 chips offers up to 30% better performance compared to Graviton3. These instances deliver enhanced price-performance for workloads hosted on Amazon OpenSearch Service.

Support covers all OpenSearch versions and Elasticsearch versions 7.9 and 7.10 across many AWS regions. This empowers users to leverage the latest Arm-based hardware improvements for search and analytics workloads optimized by Amazon OpenSearch Service.

Source & further reading

Amazon OpenSearch Service expands support for Graviton4 (c8g,m8g & r8g ) instances ↗

Source published 2026-02-18. 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.