Amazon OpenSearchManaged retrieval engine for agentic AI, search, and analytics
vs
MarqoSmarter Search, Higher Conversion
Comparison · Vector Databases · weekly run Nov 2
Amazon OpenSearch vs Marqo
Which one do AI engines recommend, and how do they differ on price, fit and features?
The short answer
Marqo is the stronger AI pick in Vector Databases: it has a visibility score of 0.7 versus 0 for Amazon OpenSearch.
Choose Amazon OpenSearch if…
- You need HIPAA eligible or PCI DSS or SOC or ISO or FedRAMP or DoD CC SRG or CSA STAR or FIPS 140-2 or ISO 27017 coverage
- You prefer a larger, established vendor (5,000+ employees)
Choose Marqo if…
- You want the brand AI engines rank higher (0.7 vs 0)
AI visibility side by side
Latest weekly run · Nov 2
| Metric | Amazon OpenSearch | Marqo |
|---|---|---|
| Visibility score | 0% | 0.7% |
| Change vs last week | New | New |
| Rank in Vector Databases | #28 | #25 |
| Share of voice | 0% | 0.4% |
| Mentions this run | 0 | 2 |
| Positive in AI answers | — | 0% |
The stronger value in each row is marked with a ✓.
Visibility score trend
Weekly runs over the last 60 days
Amazon OpenSearch 0pp · Marqo 0pp over 0 weekly runs.
Engine by engine
Marqo leads on 3 of 3 engines
ChatGPT
AI Mode
Perplexity
Amazon OpenSearchMarqo
Head to head in AI answers
0 engine answers name both brands
0Amazon OpenSearch ranked higher
0Marqo ranked higher
Features, pricing & fit
| Dimension | Amazon OpenSearch | Marqo |
|---|---|---|
| Deployment | Fully managed clusters or the Serverless option | Deployed via API or one-click integrations with commerce platforms |
| Compliance | HIPAA eligible, PCI DSS, SOC, ISO, FedRAMP, DoD CC SRG, CSA STAR, FIPS 140-2, ISO 27017 | — |
| Support | — | Talk to a search expert, Book a 30-minute demo with a live proof-of-concept on your own catalog |
| Founded | — | 2022 |
| Headquarters | Seattle, Washington | San Francisco, California, USA |
| Employees | 5,000+ | 51–200 |
| Funding | — | Series A · $18M raised |
| Best for | — | Enterprise retail brands with large product catalogs in fashion, beauty, electronics and home goods |
Data collected ·ChatGPT, Perplexity, Google AI Mode·coverage 100%·next run
Cite as: SlateIndex, “Amazon OpenSearch vs Marqo”, https://slateindex.ai/compare/amazon-opensearch-vs-marqo, data of Nov 2, 2026. Licence: CC BY 4.0.