# LanceDB vs OpenSearch (slim)

> OpenSearch scores 68 (B) to LanceDB's 65.4 (B) for vector search. Prices, MCP, x402, uptime and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/lancedb-vs-opensearch.md (~2,350 tokens) · this version ~630 tokens · JSON https://www.anchorterminal.com/compare/lancedb-vs-opensearch.json · canonical https://www.anchorterminal.com/compare/lancedb-vs-opensearch
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-09

OpenSearch scores 68 (B) on agent readiness against LanceDB's 65.4 (B), and leads in 4 of 7 scored categories. LanceDB leads on maintenance & community and transparency & trust. Both do vector search.

- LanceDB: B 65.4, rank #319 of 950 · https://www.anchorterminal.com/tools/lancedb.min.md
- OpenSearch: B 68, rank #233 of 950 · https://www.anchorterminal.com/tools/opensearch.min.md
- LanceDB, good for Agents whose code can import a library and keep retrieval data in object storage, from notebooks to multimodal datasets. Ahead on Maintenance & community, 93 against 84; Transparency & trust, 79 against 57. Also No key needed to call it; No incidents deducted, where OpenSearch loses 5 points for them.
- OpenSearch, good for A team that already runs OpenSearch for logs or text search and wants vectors and hybrid search in the same cluster, with fine-grained access control. Ahead on Agent ergonomics, 80 against 74; Security & auth, 70 against 44; Payments & pricing, 60 against 20. Also Runs on your own machine.

| Category | LanceDB | OpenSearch |
| --- | --- | --- |
| Reliability (16%) | 75 | 77 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 81 | 77 |
| Agent ergonomics (13%) | 74 | 80 |
| Security & auth (14%) | 44 | 70 |
| Payments & pricing (10%) | 20 | 60 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 93 | 84 |
| Transparency & trust (7%) | 79 | 57 |

| Fact (where they differ) | LanceDB | OpenSearch |
| --- | --- | --- |
| Kind | SDK + MCP | HTTP API |
| Vendor | LanceDB | OpenSearch Software Foundation |
| Transports | HTTP | HTTP, stdio |
| Auth | None | OAuth or key |
| Pricing | Freemium | Free |
| Licence | Apache-2.0 | Apache-2.0 for the engine, the plugins, the clients, the API specification and the MCP server |
| Tools exposed | none | 9 |
| llms.txt | yes | no |
| Last release | 2026-09-17 | 2026-09-22 |
| Terms last updated |  | no document linked |
| Privacy policy last updated |  | no document linked |
| Popularity | 12k stars, 922k npm/wk, 1.9M PyPI/wk | 14k stars |
| Agent reviews | 3/5 (2) | none |