DataStax Astra DB vs MongoDB Atlas
Which one do AI engines recommend, and how do they differ on price, fit and features?
The short answer
MongoDB Atlas is the stronger AI pick in Vector Databases: it has a visibility score of 12.7 versus 3 for DataStax Astra DB, and ranks ahead in 50% of the answers that name both.
Choose DataStax Astra DB if…
- You need a self-hosted or on-premises option
- You need SOC 2 or ISO/IEC 27001 coverage
- Integrated vector search in one serverless NoSQL database
- Annual commitment and volume discounts
Choose MongoDB Atlas if…
- You want the brand AI engines rank higher (12.7 vs 3)
- You need ISO/IEC 27001:2022 or FedRAMP Moderate (Atlas for Government) or TX-RAMP Level 2 or GDPR or CSA STAR coverage
- stores documents and vector embeddings together in one system
- good fit for teams already using MongoDB
AI visibility side by side
Latest weekly run · Nov 2
| Metric | DataStax Astra DB | MongoDB Atlas |
|---|---|---|
| Visibility score | 3% | 12.7% |
| Change vs last week | New | New |
| Rank in Vector Databases | #18 | #8 |
| Share of voice | 1.1% | 5.5% |
| Mentions this run | 5 | 26 |
| Positive in AI answers | — | 28% |
The stronger value in each row is marked with a ✓.
Visibility score trend
Weekly runs over the last 60 days
DataStax Astra DB 0pp · MongoDB Atlas 0pp over 0 weekly runs.
Engine by engine
MongoDB Atlas leads on 3 of 3 engines
Head to head in AI answers
4 engine answers name both brands
| Prompt | Engine | DataStax Astra DB | MongoDB Atlas |
|---|---|---|---|
| Which Vector Databases vendors do analysts recommend? | Perplexity | #7 | #6 |
| Which Vector Databases tools offer annual discounts? | ChatGPT | #1 | #10 |
| Official website of the top vector database vendors | Perplexity | #10 | #8 |
| Where can I sign up for a vector database? | AI Mode | #5 | #9 |
Features, pricing & fit
| Dimension | DataStax Astra DB | MongoDB Atlas |
|---|---|---|
| Pricing model | — | Usage-based |
| Entry price | — | Free; paid from $0.011 / mo |
| Free plan | — | Yes |
| Deployment | Cloud database-as-a-service; HCD for on-premises or private cloud | Fully managed cloud with Atlas Core and Atlas Infinite deployment options, or self-managed through MongoDB Enterprise Advanced |
| Integrations | — | 100+ |
| Compliance | HIPAA, PCI DSS, SOC 2, ISO/IEC 27001 | ISO/IEC 27001:2022, FedRAMP Moderate (Atlas for Government), TX-RAMP Level 2, PCI DSS, HIPAA, GDPR, CSA STAR |
| Support | Documentation | Basic Support included free with Atlas, Paid plans with faster response times, Named Technical Support Engineers, Extended Lifecycle Support add-on |
| Headquarters | — | New York, NY, United States |
| Employees | 5,000+ | 5,000+ |
| Funding | Undisclosed round (last round per Tracxn) | IPO and stock offering · $311M raised |
| Best for | Enterprises building generative AI and retrieval-augmented generation applications that need scalable NoSQL storage with vector search. | Development teams building AI applications and agents that need operational data, vectors and search in one platform |
Plans side by side
DataStax Astra DB
Pricing not available.
MongoDB Atlas
Pros and cons
Themes from the AI answers that mention each brand
DataStax Astra DB
- Integrated vector search in one serverless NoSQL database
- Annual commitment and volume discounts
- Built on Apache Cassandra
MongoDB Atlas
- stores documents and vector embeddings together in one system
- good fit for teams already using MongoDB
- built-in vector search without extra infrastructure
- vector search included in Atlas pricing with a free M0 tier
- integration with Databricks Lakebase
Data collected ·ChatGPT, Perplexity, Google AI Mode·coverage 100%·next run
Cite as: SlateIndex, “DataStax Astra DB vs MongoDB Atlas”, https://slateindex.ai/compare/datastax-astra-db-vs-mongodb-atlas, data of Nov 2, 2026. Licence: CC BY 4.0.