Google Vertex AI Vector Search vs Vespa
Which one do AI engines recommend, and how do they differ on price, fit and features?
The short answer
Vespa is the stronger AI pick in Vector Databases: it has a visibility score of 3.8 versus 1.5 for Google Vertex AI Vector Search.
Choose Google Vertex AI Vector Search if…
- You prefer a larger, established vendor (5,000+ employees)
Choose Vespa if…
- You want the brand AI engines rank higher (3.8 vs 1.5)
- Massive-scale big data serving engine and AI search platform
- Billion-scale hybrid search with native tensor calculations
- Suited to sophisticated recommendation, ranking, and personalization with custom ranking logic
AI visibility side by side
Latest weekly run · Nov 2
| Metric | Google Vertex AI Vector Search | Vespa |
|---|---|---|
| Visibility score | 1.5% | 3.8% |
| Change vs last week | New | New |
| Rank in Vector Databases | #21 | #17 |
| Share of voice | 0.5% | 1.9% |
| Mentions this run | 3 | 9 |
| Positive in AI answers | — | 67% |
The stronger value in each row is marked with a ✓.
Visibility score trend
Weekly runs over the last 60 days
Google Vertex AI Vector Search 0pp · Vespa 0pp over 0 weekly runs.
Engine by engine
Vespa leads on 3 of 3 engines
Head to head in AI answers
0 engine answers name both brands
Features, pricing & fit
| Dimension | Google Vertex AI Vector Search | Vespa |
|---|---|---|
| Deployment | Fully managed service on Google Cloud | Open source for self-hosting, Vespa Cloud fully managed on AWS and Google Cloud marketplaces, and Enclave, which runs hosts in the customer's own cloud account. |
| Support | — | Developer center and documentation, Vespa Slack community |
| Founded | — | 2023 |
| Headquarters | — | Trondheim, Norway |
| Employees | 5,000+ | 51–200 |
| Funding | — | Series A, led by Blossom Capital · $31M raised |
| Best for | — | Teams building search, retrieval-augmented generation, recommendation and personalization applications that must run at large scale. |
Pros and cons
Themes from the AI answers that mention each brand
Google Vertex AI Vector Search
Profile in progress.
Vespa
- Massive-scale big data serving engine and AI search platform
- Billion-scale hybrid search with native tensor calculations
- Suited to sophisticated recommendation, ranking, and personalization with custom ranking logic
- High-throughput serving
- Recognised by analysts among strongest vector database vendors
Data collected ·ChatGPT, Perplexity, Google AI Mode·coverage 100%·next run
Cite as: SlateIndex, “Google Vertex AI Vector Search vs Vespa”, https://slateindex.ai/compare/google-vertex-ai-vector-search-vs-vespa, data of Nov 2, 2026. Licence: CC BY 4.0.