Elasticsearch vs Vespa
Elasticsearch: Lucene-based distributed search and analytics engine for text, vectors, logs and metrics. Vespa: Big-data serving engine for search, recommendation and RAG with tensors and ML ranking.
key differences
- Licensing: Elasticsearch is open source (copyleft) (AGPL-3.0, SSPL 1.0 or Elastic License 2.0 (your choice)); Vespa is open source (permissive) (Apache License 2.0).
- Only Elasticsearch has joins, role-based access.
- Only Vespa has ttl / expiry.
- Elasticsearch has a serverless option; Vespa does not.
choose elasticsearch for
- +E-commerce and site search with faceting
- +Log, metrics and SIEM analytics
- +Hybrid keyword plus semantic retrieval for RAG
- +Geospatial search and aggregations
best at · Search, Vector search, RAG
choose vespa for
- +Large-scale hybrid search and RAG retrieval
- +Recommendation and personalization feeds
- +Ad serving and ranking
- +E-commerce search with learned ranking
best at · Search, Vector search, RAG
Elasticsearch vs Vespa: FAQ
What is the difference between Elasticsearch and Vespa?
Elasticsearch: Lucene-based distributed search and analytics engine for text, vectors, logs and metrics. Vespa: Big-data serving engine for search, recommendation and RAG with tensors and ML ranking. Licensing: Elasticsearch is open source (copyleft) (AGPL-3.0, SSPL 1.0 or Elastic License 2.0 (your choice)); Vespa is open source (permissive) (Apache License 2.0). Only Elasticsearch has joins, role-based access. Only Vespa has ttl / expiry.
When should I choose Elasticsearch over Vespa?
Choose Elasticsearch for E-commerce and site search with faceting; log, metrics and SIEM analytics; and hybrid keyword plus semantic retrieval for RAG. Choose Vespa for large-scale hybrid search and RAG retrieval; recommendation and personalization feeds; and ad serving and ranking.
Is Elasticsearch or Vespa more popular?
Elasticsearch ranks #6 on the WhichDB Score (75.1/100) and Vespa ranks #127 (23.8/100). Popularity is not fit: check the requirements that matter for your project.
Are Elasticsearch and Vespa open source?
Yes. Elasticsearch is open source. License: AGPL-3.0, SSPL 1.0 or Elastic License 2.0 (your choice). Yes. Vespa is open source. License: Apache License 2.0.