PostgreSQL vs Zilliz Cloud

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 23 for Zilliz Cloud, and ranks ahead in 48% of the answers that name both.

Choose PostgreSQL if…

You want the brand AI engines rank higher (49 vs 23)
AI answers describe it more positively (35% vs 32% positive)
Free open-source software
Adds vector search to an existing PostgreSQL database without a new database

Choose Zilliz Cloud if…

You need SOC 2 Type II or ISO/IEC 27001 or GDPR ready or HIPAA ready coverage
built for billion-scale vector workloads
free tier with 5 GB storage
managed Milvus cloud option

AI visibility side by side

Latest weekly run · Nov 2

Metric	PostgreSQL	Zilliz Cloud
Visibility score	49%	23%
Change vs last week	New	New
Rank in Vector Databases	#3	#5
Share of voice	12.6%	6.3%
Mentions this run	59	30
Positive in AI answers	35%	32%

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

Visibility score trend

Weekly runs over the last 60 days

PostgreSQL 0pp · Zilliz Cloud 0pp over 0 weekly runs.

Engine by engine

PostgreSQL leads on 3 of 3 engines

ChatGPT

44.3%

28.7%

AI Mode

42.8%

22%

Perplexity

59.8%

18.3%

PostgreSQLZilliz Cloud

Head to head in AI answers

21 engine answers name both brands

10PostgreSQL ranked higher

11Zilliz Cloud ranked higher

Prompt	Engine	PostgreSQL	Zilliz Cloud
How do I choose a vector database for a mid-market team?	ChatGPT	#1	#5
What features matter most in a vector database?	ChatGPT	#4	#5
What are the best Vector Databases tools in 2026?	AI Mode	#6	#2
Top vector database options for B2B SaaS companies	ChatGPT	#4	#5
Top vector database options for B2B SaaS companies	Perplexity	#3	#5
Best vector database for enterprise	ChatGPT	#5	#4
Best vector database for enterprise	AI Mode	#3	#2
Best vector database for enterprise	Perplexity	#4	#3
Compare the leading Vector Databases platforms	ChatGPT	#5	#4
Compare the leading Vector Databases platforms	Perplexity	#5	#4
Which vector database has the best reviews?	AI Mode	#2	#6
Most affordable vector database that is still reliable	ChatGPT	#2	#3

Features, pricing & fit

Dimension	PostgreSQL	Zilliz Cloud
Pricing model	—	Usage-based
Entry price	—	Free; paid from $197 / mo
Free plan	—	Yes
Deployment	—	Fully managed SaaS, bring-your-own-cloud (BYOC) with data in the customer's VPC, and self-run open-source Milvus
Compliance	—	SOC 2 Type II, ISO/IEC 27001, GDPR ready, HIPAA ready
Support	Community mailing lists, Community events and local user groups	Community support bot, Email/ticket portal, Slack private channel, Zoom, Google Meet or Teams calls
Founded	—	2017
Headquarters	United States	Redwood City, California
Employees	51–200	51–200
Funding	—	Series B extension · $113M raised
Best for	—	Teams running production AI applications that need low-latency vector search at scale, and regulated sectors such as healthcare and finance