Context management
Elastic Agent Builder (Elasticsearch)
Search-and-agent platform: hybrid retrieval, reranking, inference and agent skills over one index
★ 78,549 on GitHub · last commit Nov 10, 2026
What it is
Elastic positions Elasticsearch explicitly as the retrieval and context layer for AI agents, and Agent Builder ships both MCP and A2A servers so the same index can serve agents built elsewhere. The Jina AI acquisition folded embeddings and rerankers into the stack, which is the clearest commercial consolidation signal in this category.
At a glance
- Vendor
- Elastic
- Business model
- Open source + paid cloud
- Pricing
- Agent Builder free for the first 1,000 executions on Elasticsearch Serverless, then from $0.025 per execution pricing page ↗
- License
- NOASSERTION
- Self-hosting
- Yes, can be self-hosted
- Access
- Elasticsearch REST API, Agent Builder and skills, built-in MCP server, A2A server, inference endpoints
GitHub activity
This product has a public repository, so we read it nightly from the GitHub API. Stars measure developer attention, not quality or market share.
“Free and Open Source, Distributed, RESTful Search Engine” (repository description)
- Stars
- 78,549
- Forks
- 26,199
- Open issues
- 6,477
- Last commit
- Nov 10, 2026
- License (GitHub)
- NOASSERTION
Links and sources
- Official sitewww.elastic.co/elasticsearch/agent-builder
- Pricingwww.elastic.co/elasticsearch/agent-builder
- GitHub repositorygithub.com/elastic/elasticsearch
- Sourcewww.elastic.co/elasticsearch/ai-assistant
- Sourcewww.elastic.co
Facts verified nov 10, 2026; added nov 10, 2026. Vendor facts come from the vendor’s own pages; benchmark claims are self-reported unless we say otherwise.