Chroma vs PostgreSQL

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

The short answer

PostgreSQL is the stronger AI pick in Vector Databases: it has a visibility score of 49 versus 18.6 for Chroma, and ranks ahead in 63% of the answers that name both.

Choose Chroma if…

AI answers describe it more positively (50% vs 35% positive)
You need a self-hosted or on-premises option
You need SOC 2 Type II coverage
Fast path from local notebook prototyping to serverless cloud production

Choose PostgreSQL if…

You want the brand AI engines rank higher (49 vs 18.6)
You prefer a larger, established vendor (51–200 employees)
Free open-source software
Adds vector search to an existing PostgreSQL database without a new database

AI visibility side by side

Latest weekly run · Nov 2

Metric	Chroma	PostgreSQL
Visibility score	18.6%	49%
Change vs last week	New	New
Rank in Vector Databases	#6	#3
Share of voice	6.8%	12.6%
Mentions this run	32	59
Positive in AI answers	50%	35%

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

Visibility score trend

Weekly runs over the last 60 days

Chroma 0pp · PostgreSQL 0pp over 0 weekly runs.

Engine by engine

PostgreSQL leads on 3 of 3 engines

ChatGPT

22.2%

44.3%

AI Mode

20.9%

42.8%

Perplexity

12.6%

59.8%

ChromaPostgreSQL

Head to head in AI answers

27 engine answers name both brands

10Chroma ranked higher

17PostgreSQL ranked higher

Prompt	Engine	Chroma	PostgreSQL
What is a vector database and when does a company need one?	ChatGPT	#5	#2
What are the best Vector Databases tools in 2026?	ChatGPT	#4	#5
What are the best Vector Databases tools in 2026?	AI Mode	#5	#6
What are the best Vector Databases tools in 2026?	Perplexity	#5	#3
Best vector database for startups	ChatGPT	#5	#1
Best vector database for startups	AI Mode	#5	#3
Best vector database for startups	Perplexity	#4	#3
Compare the leading Vector Databases platforms	ChatGPT	#6	#5
Compare the leading Vector Databases platforms	Perplexity	#8	#5
Alternatives to the most popular vector database	ChatGPT	#5	#4
Alternatives to the most popular vector database	AI Mode	#8	#2
Alternatives to the most popular vector database	Perplexity	#5	#4

Features, pricing & fit

Dimension	Chroma	PostgreSQL
Pricing model	Usage-based	—
Entry price	Free; paid from $250 / mo	—
Free plan	Yes	—
Deployment	Open-source self-hosted, serverless managed Chroma Cloud, or Bring Your Own Cloud in the customer's VPC.	—
Compliance	SOC 2 Type II	—
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	Community mailing lists, Community events and local user groups
Founded	2022	—
Headquarters	San Francisco, CA, United States	United States
Employees	11–50	51–200
Funding	Seed · $18M 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.	—