OpenSearch vs Elasticsearch Compared: Performance, Features & Cost (2026)

OpenSearch (63) Elasticsearch (61) Amazon OpenSearch Service (21) BigData (20) Gen AI (16) ClickHouse (16) RAG (16) vector search (12) AWS (9) LLM (8) Press Release (8) Kibana (8) GenAI (7) Elastic Stack (7) Presto (7) Announcement (6) Apache Kafka (6) Elastic Cloud (6) Apache Iceberg (5) AI Agents (5) Webinar (5) Apache Solr (4) Kubernetes (4) Apache Flink (4) Pulse (4) AWS Elasticsearch (4) Spark (4) COVID-19 (4) Data Lakes (3) hybrid search (3) Delta Lake (2) Data Architecture (2) Snowflake (2) Data Engineering (2) AWS Glue (2) Semantic Search (2) Databricks (2) Monitoring (2) Hive (2) AWS EMR (2) Google Dataproc (2) MongoDB (1) MCP (1) Observability (1) GetAI (1) Databases (1) Events (1) information retrieval (1) BM25 (1) embeddings (1) ETL (1) AI (1) LangGraph (1) Big Data (1) Disaster Recovery (1) Mirror Maker (1) PostgreSQL (1) AWS Kinesis (1) Data Streaming (1) OpenTelemetry (1) OpenAI (1) AWS Firehose (1) Shraga (1) Apache Lucene (1) OpenSearch Serverless (1) Amazon Athena (1) Pinecone (1) Weaviate (1) Search ML (1) Apache Hudi (1) Solr (1) Traefik (1) Google Cloud (1) GKE (1) Vega (1) Data Visualisation (1) ElastAlert (1) Architecture (1) Streaming (1) Apache Pulsar (1) Avro (1) Parquet (1) JSON (1) Cloud (1) Kafka Streams (1) DevOps (1) Pulumi (1) Redis (1)