Azure AI Search vs Weaviate
Which one do AI engines recommend, and how do they differ on price, fit and features?
The short answer
Weaviate is the stronger AI pick in Vector Databases: it has a visibility score of 45.2 versus 1.2 for Azure AI Search, and ranks ahead in 100% of the answers that name both.
Choose Azure AI Search if…
- AI answers describe it more positively (67% vs 59% positive)
- You need ISO 27001 or ISO 27018 or ISO 27701 or SOC 2 or FedRAMP or HIPAA or GDPR coverage
- Strong analyst recognition as a vector database vendor
Choose Weaviate if…
- You want the brand AI engines rank higher (45.2 vs 1.2)
- You need SOC 2 Type II or HIPAA (Enterprise Cloud on AWS) coverage
- Strong native hybrid search
- Open-source and modular AI-native design
AI visibility side by side
Latest weekly run · Nov 2
| Metric | Azure AI Search | Weaviate |
|---|---|---|
| Visibility score | 1.2% | 45.2% |
| Change vs last week | New | New |
| Rank in Vector Databases | #23 | #4 |
| Share of voice | 0.6% | 11.7% |
| Mentions this run | 3 | 56 |
| Positive in AI answers | 67% | 59% |
The stronger value in each row is marked with a ✓.
Visibility score trend
Weekly runs over the last 60 days
Azure AI Search 0pp · Weaviate 0pp over 0 weekly runs.
Engine by engine
Weaviate leads on 3 of 3 engines
Head to head in AI answers
3 engine answers name both brands
| Prompt | Engine | Azure AI Search | Weaviate |
|---|---|---|---|
| Best vector database for enterprise | ChatGPT | #6 | #3 |
| Which Vector Databases vendors do analysts recommend? | ChatGPT | #6 | #3 |
| Which Vector Databases vendors do analysts recommend? | Perplexity | #8 | #3 |
Features, pricing & fit
| Dimension | Azure AI Search | Weaviate |
|---|---|---|
| Pricing model | — | Usage-based |
| Entry price | — | Free; paid from $45 / mo |
| Free plan | — | Yes |
| Deployment | Cloud service on Microsoft Azure with Dedicated tiers and a Serverless consumption-based pricing model in preview | Serverless, Enterprise Cloud, or Bring Your Own Cloud |
| Compliance | ISO 27001, ISO 27018, ISO 27701, SOC 2, FedRAMP, HIPAA, GDPR | SOC 2 Type II, HIPAA (Enterprise Cloud on AWS) |
| Support | — | Email support on all plans, Phone and Slack support on Premium and Dedicated plans, Technical Account Team add-on on Premium and Dedicated plans |
| Founded | — | 2019 |
| Headquarters | — | Amsterdam, Netherlands |
| Employees | — | 51–200 |
| Funding | — | Strategic investment (Ricoh corporate venture fund) |
| Best for | — | Development teams and enterprises building search, RAG and agent applications who want an open-source, production-ready vector database. |
Plans side by side
Azure AI Search
Pricing not available.
Weaviate
Pros and cons
Themes from the AI answers that mention each brand
Azure AI Search
- Strong analyst recognition as a vector database vendor
Weaviate
- Strong native hybrid search
- Open-source and modular AI-native design
- Free tier or trial to start
- Flexible indexing and configurable managed service
- Published pricing with an annual-commitment option
- Monthly minimum charges
- Higher tiers priced steeply above entry plan
Data collected ·ChatGPT, Perplexity, Google AI Mode·coverage 100%·next run
Cite as: SlateIndex, “Azure AI Search vs Weaviate”, https://slateindex.ai/compare/azure-ai-search-vs-weaviate, data of Nov 2, 2026. Licence: CC BY 4.0.