Amazon OpenSearch vs Azure AI Search
Which one do AI engines recommend, and how do they differ on price, fit and features?
The short answer
Azure AI Search is the stronger AI pick in Vector Databases: it has a visibility score of 1.2 versus 0 for Amazon OpenSearch.
Choose Amazon OpenSearch if…
- You need HIPAA eligible or PCI DSS or SOC or ISO or DoD CC SRG or CSA STAR or FIPS 140-2 or ISO 27017 coverage
Choose Azure AI Search if…
- You want the brand AI engines rank higher (1.2 vs 0)
- You need ISO 27001 or ISO 27018 or ISO 27701 or SOC 2 or HIPAA or GDPR coverage
- Strong analyst recognition as a vector database vendor
AI visibility side by side
Latest weekly run · Nov 2
| Metric | Amazon OpenSearch | Azure AI Search |
|---|---|---|
| Visibility score | 0% | 1.2% |
| Change vs last week | New | New |
| Rank in Vector Databases | #28 | #23 |
| Share of voice | 0% | 0.6% |
| Mentions this run | 0 | 3 |
| 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
Amazon OpenSearch 0pp · Azure AI Search 0pp over 0 weekly runs.
Engine by engine
Azure AI Search leads on 3 of 3 engines
Head to head in AI answers
0 engine answers name both brands
Features, pricing & fit
| Dimension | Amazon OpenSearch | Azure AI Search |
|---|---|---|
| Deployment | Fully managed clusters or the Serverless option | Cloud service on Microsoft Azure with Dedicated tiers and a Serverless consumption-based pricing model in preview |
| Compliance | HIPAA eligible, PCI DSS, SOC, ISO, FedRAMP, DoD CC SRG, CSA STAR, FIPS 140-2, ISO 27017 | ISO 27001, ISO 27018, ISO 27701, SOC 2, FedRAMP, HIPAA, GDPR |
| Headquarters | Seattle, Washington | — |
| Employees | 5,000+ | — |
Pros and cons
Themes from the AI answers that mention each brand
Amazon OpenSearch
Profile in progress.
Azure AI Search
- Strong analyst recognition as a vector database vendor
Data collected ·ChatGPT, Perplexity, Google AI Mode·coverage 100%·next run
Cite as: SlateIndex, “Amazon OpenSearch vs Azure AI Search”, https://slateindex.ai/compare/amazon-opensearch-vs-azure-ai-search, data of Nov 2, 2026. Licence: CC BY 4.0.