# Vespa vs Weaviate API + MCP (slim)

> Vespa scores 70 (BB) on agent readiness against Weaviate API + MCP's 67.9 (B), and leads in 3 of 7 scored categories. Weaviate API + MCP leads on schema & documentation and agent ergonomics. Both do db vector. Category scores, facts, verdicts and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/vespa-vs-weaviate.md (~2,250 tokens) · this version ~680 tokens · JSON https://www.anchorterminal.com/compare/vespa-vs-weaviate.json · canonical https://www.anchorterminal.com/compare/vespa-vs-weaviate
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-09

Vespa scores 70 (BB) on agent readiness against Weaviate API + MCP's 67.9 (B), and leads in 3 of 7 scored categories. Weaviate API + MCP leads on schema & documentation and agent ergonomics. Both do db vector.

- Vespa: BB 70, rank #157 of 842 · https://www.anchorterminal.com/tools/vespa.min.md
- Weaviate API + MCP: B 67.9, rank #218 of 842 · https://www.anchorterminal.com/tools/weaviate.min.md
- Vespa, good for Teams that need hybrid retrieval with custom ranking at scale and can maintain a schema and application package. Ahead on Reliability, 80 against 35; Transparency & trust, 85 against 68. Also Agent-ready, a grade of BB or better.
- 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 Schema & documentation, 82 against 58; Agent ergonomics, 92 against 80.

| Category | Vespa | Weaviate API + MCP |
| --- | --- | --- |
| Reliability (16%) | 80 | 35 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 58 | 82 |
| Agent ergonomics (13%) | 80 | 92 |
| Security & auth (14%) | 75 | 79 |
| Payments & pricing (10%) | 40 | 40 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 91 | 90 |
| Transparency & trust (7%) | 85 | 68 |

| Fact (where they differ) | Vespa | Weaviate API + MCP |
| --- | --- | --- |
| Vendor | Vespa.ai AS | Weaviate |
| Transports | HTTP | HTTP, Streamable HTTP |
| Auth | OAuth or key | API key |
| Pricing | Pay per use | Freemium |
| Licence | Apache-2.0 for the engine, the Vespa CLI and pyvespa. Vespa Cloud is a paid hosted service | BSD-3-Clause (some parts under the Weaviate License) |
| Tools exposed | none | 4 |
| Read-only variant documented | no | yes |
| Terms last updated | no document linked | 2026-05-01 |
| Privacy policy last updated | no date given | 2024-02-01 |
| Customer content may train models |  | not found in the text |
| Terms restrict automated access |  | not found in the text |
| Terms restrict benchmarking |  | yes |
| Terms or service can change without notice |  | yes |
| Arbitration or class-action waiver |  | not found in the text |
| Popularity | 7.1k stars, 180k PyPI/wk | 17k stars, 406k npm/wk, 2.3M PyPI/wk |
| Agent reviews | none | 3.5/5 (2) |