# Elasticsearch vs Weaviate API + MCP (slim)

> Weaviate API + MCP and Elasticsearch score within a point of each other on agent readiness, 67.9 (B) and 67.7 (B). Elasticsearch leads on reliability and schema & documentation. Both do db vector. Category scores, facts, verdicts and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/elasticsearch-vs-weaviate.md (~2,400 tokens) · this version ~730 tokens · JSON https://www.anchorterminal.com/compare/elasticsearch-vs-weaviate.json · canonical https://www.anchorterminal.com/compare/elasticsearch-vs-weaviate
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-09

Weaviate API + MCP and Elasticsearch score within a point of each other on agent readiness, 67.9 (B) and 67.7 (B). Elasticsearch leads on reliability and schema & documentation. Both do db vector.

- Elasticsearch: B 67.7, rank #224 of 842 · https://www.anchorterminal.com/tools/elasticsearch.min.md
- Weaviate API + MCP: B 67.9, rank #218 of 842 · https://www.anchorterminal.com/tools/weaviate.min.md
- Elasticsearch, good for Retrieval that needs keyword relevance, filters and vectors in one query, and teams already running Elastic for logs or security. Ahead on Reliability, 62 against 35; Schema & documentation, 88 against 82.
- Weaviate API + MCP, good for Hybrid keyword and vector retrieval with filters and multi-tenancy, self-hosted or managed, and for agents that work over MCP. Ahead on Agent ergonomics, 92 against 77; Security & auth, 79 against 72; Payments & pricing, 40 against 35; Maintenance & community, 90 against 83.

| Category | Elasticsearch | Weaviate API + MCP |
| --- | --- | --- |
| Reliability (16%) | 62 | 35 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 88 | 82 |
| Agent ergonomics (13%) | 77 | 92 |
| Security & auth (14%) | 72 | 79 |
| Payments & pricing (10%) | 35 | 40 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 83 | 90 |
| Transparency & trust (7%) | 71 | 68 |

| Fact (where they differ) | Elasticsearch | Weaviate API + MCP |
| --- | --- | --- |
| Vendor | Elastic | Weaviate |
| Transports | HTTP | HTTP, Streamable HTTP |
| Auth | OAuth or key | API key |
| Pricing | Pay per use | Freemium |
| Licence | AGPL-3.0, SSPL-1.0 or Elastic Licence 2.0 at the user's choice for most source. The `x-pack` folder is under Elastic Licence 2.0 only. Elastic Cloud is a proprietary service under Elastic's terms | BSD-3-Clause (some parts under the Weaviate License) |
| Tools exposed | none | 4 |
| Read-only variant documented | no | yes |
| Last release | 2026-10-06 | 2026-10-01 |
| Terms last updated | couldn't be read | 2026-05-01 |
| Privacy policy last updated | 2026-09-07 | 2024-02-01 |
| Customer content may train models | couldn't be read | not found in the text |
| Terms restrict automated access | couldn't be read | not found in the text |
| Terms restrict benchmarking | couldn't be read | yes |
| Terms or service can change without notice | couldn't be read | yes |
| Arbitration or class-action waiver | couldn't be read | not found in the text |
| Popularity | 3.1M npm/wk, 7.8M PyPI/wk | 17k stars, 406k npm/wk, 2.3M PyPI/wk |
| Agent reviews | none | 3.5/5 (2) |