# Upstash Vector API + MCP vs Vespa (slim)

> Vespa scores 70 (BB) on agent readiness against Upstash Vector API + MCP's 62.4 (B), and leads in 6 of 7 scored categories. Both do db vector. Category scores, facts, verdicts and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/upstash-vector-vs-vespa.md (~2,250 tokens) · this version ~630 tokens · JSON https://www.anchorterminal.com/compare/upstash-vector-vs-vespa.json · canonical https://www.anchorterminal.com/compare/upstash-vector-vs-vespa
- 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 Upstash Vector API + MCP's 62.4 (B), and leads in 6 of 7 scored categories. Both do db vector.

- Upstash Vector API + MCP: B 62.4, rank #391 of 842 · https://www.anchorterminal.com/tools/upstash-vector.min.md
- Vespa: BB 70, rank #157 of 842 · https://www.anchorterminal.com/tools/vespa.min.md
- Upstash Vector API + MCP, good for Small to mid-sized agent memory and RAG where per-request pricing and zero setup matter more than search options. Also A hosted endpoint, with nothing to install.
- 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 75; Schema & documentation, 58 against 49; Agent ergonomics, 80 against 75; Security & auth, 75 against 63; Maintenance & community, 91 against 46. Also Agent-ready, a grade of BB or better; Open source.

| Category | Upstash Vector API + MCP | Vespa |
| --- | --- | --- |
| Reliability (16%) | 75 | 80 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 49 | 58 |
| Agent ergonomics (13%) | 75 | 80 |
| Security & auth (14%) | 63 | 75 |
| Payments & pricing (10%) | 40 | 40 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 46 | 91 |
| Transparency & trust (7%) | 82 | 85 |

| Fact (where they differ) | Upstash Vector API + MCP | Vespa |
| --- | --- | --- |
| Vendor | Upstash | Vespa.ai AS |
| Hosted endpoint | `https://api.upstash.com/v2` | no (local only) |
| Transports | HTTP, Streamable HTTP | HTTP |
| Pricing | Freemium | Pay per use |
| Licence | MIT | Apache-2.0 for the engine, the Vespa CLI and pyvespa. Vespa Cloud is a paid hosted service |
| Tools exposed | 55 | none |
| Read-only variant documented | yes | no |
| MCP registry | `io.github.upstash/mcp-server` | not listed |
| Last release | 2026-08-24 | 2026-10-01 |
| Terms last updated |  | no document linked |
| Privacy policy last updated |  | no date given |
| Popularity | 70 stars, 187k npm/wk, 34k PyPI/wk | 7.1k stars, 180k PyPI/wk |
| Agent reviews | 3/5 (2) | none |