Chroma vs MongoDB Atlas

Which one do AI engines recommend, and how do they differ on price, fit and features?

The short answer

Chroma is the stronger AI pick in Vector Databases: it has a visibility score of 18.6 versus 12.7 for MongoDB Atlas, and ranks ahead in 73% of the answers that name both.

Choose Chroma if…

You want the brand AI engines rank higher (18.6 vs 12.7)
AI answers describe it more positively (50% vs 28% positive)
You need a self-hosted or on-premises option
You need SOC 2 Type II coverage

Choose MongoDB Atlas if…

You want a lower entry price ($0.011 vs $250)
You need ISO/IEC 27001:2022 or FedRAMP Moderate (Atlas for Government) or TX-RAMP Level 2 or PCI DSS or HIPAA or GDPR or CSA STAR coverage
You prefer a larger, established vendor (5,000+ employees)
stores documents and vector embeddings together in one system

AI visibility side by side

Latest weekly run · Nov 2

Metric	Chroma	MongoDB Atlas
Visibility score	18.6%	12.7%
Change vs last week	New	New
Rank in Vector Databases	#6	#8
Share of voice	6.8%	5.5%
Mentions this run	32	26
Positive in AI answers	50%	28%

The stronger value in each row is marked with a ✓.

Visibility score trend

Weekly runs over the last 60 days

Chroma 0pp · MongoDB Atlas 0pp over 0 weekly runs.

Engine by engine

Chroma leads on 3 of 3 engines

ChatGPT

22.2%

15.4%

AI Mode

20.9%

13.9%

Perplexity

12.6%

8.9%

ChromaMongoDB Atlas

Head to head in AI answers

11 engine answers name both brands

8Chroma ranked higher

3MongoDB Atlas ranked higher

Prompt	Engine	Chroma	MongoDB Atlas
What are the best Vector Databases tools in 2026?	ChatGPT	#4	#10
What are the best Vector Databases tools in 2026?	AI Mode	#5	#8
Compare the leading Vector Databases platforms	ChatGPT	#6	#8
Compare the leading Vector Databases platforms	Perplexity	#8	#9
Alternatives to the most popular vector database	AI Mode	#8	#4
Alternatives to the most popular vector database	Perplexity	#5	#8
Which Vector Databases vendors do analysts recommend?	Perplexity	#9	#6
Which Vector Databases tools offer annual discounts?	ChatGPT	#9	#10
Official website of the top vector database vendors	ChatGPT	#4	#9
Official website of the top vector database vendors	Perplexity	#4	#8
Where can I sign up for a vector database?	AI Mode	#10	#9

Features, pricing & fit

Dimension	Chroma	MongoDB Atlas
Pricing model	Usage-based	Usage-based
Entry price	Free; paid from $250 / mo	Free; paid from $0.011 / mo
Free plan	Yes	Yes
Deployment	Open-source self-hosted, serverless managed Chroma Cloud, or Bring Your Own Cloud in the customer's VPC.	Fully managed cloud with Atlas Core and Atlas Infinite deployment options, or self-managed through MongoDB Enterprise Advanced
Integrations	—	100+
Compliance	SOC 2 Type II	ISO/IEC 27001:2022, FedRAMP Moderate (Atlas for Government), TX-RAMP Level 2, PCI DSS, HIPAA, GDPR, CSA STAR
Support	Community support through Discord and the open-source community on the Starter plan, Slack support on the Team plan, Dedicated support and customized SLAs on the Enterprise plan	Basic Support included free with Atlas, Paid plans with faster response times, Named Technical Support Engineers, Extended Lifecycle Support add-on
Founded	2022	—
Headquarters	San Francisco, CA, United States	New York, NY, United States
Employees	11–50	5,000+
Funding	Seed · $18M raised	IPO and stock offering · $311M raised
Best for	Developers building retrieval-augmented generation prototypes, who get a fast start locally, and teams that later need a managed or self-hosted search system.	Development teams building AI applications and agents that need operational data, vectors and search in one platform