Relevance AI vs Stack AI

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

The short answer

Relevance AI is the stronger AI pick in AI Agents: it has a visibility score of 8 versus 1.4 for Stack AI, and ranks ahead in 100% of the answers that name both.

Choose Relevance AI if…

You want the brand AI engines rank higher (8 vs 1.4)
You need more native integrations (2000+ vs 500+)
AI answers describe it more positively (50% vs 0% positive)
You need SOC 2 coverage

Choose Stack AI if…

You want a free plan to start
You need HIPAA or SOC 2 Type II or ISO 27001 coverage
Usage-based pricing suits your budget better than flat tiers
hosted no-code agent builders

AI visibility side by side

Latest weekly run · Nov 3

Metric	Relevance AI	Stack AI
Visibility score	8%	1.4%
Change vs last week	New	New
Rank in AI Agents	#15	#51
Share of voice	1.5%	0.4%
Mentions this run	10	3
Positive in AI answers	50%	0%

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

Visibility score trend

Weekly runs over the last 60 days

Relevance AI 0pp · Stack AI 0pp over 0 weekly runs.

Engine by engine

Relevance AI leads on 3 of 3 engines

ChatGPT

10.9%

AI Mode

Perplexity

4.3%

Relevance AIStack AI

Head to head in AI answers

1 engine answers name both brands

1Relevance AI ranked higher

0Stack AI ranked higher

Prompt	Engine	Relevance AI	Stack AI
Is there a free AI agent platform for small teams?	Perplexity	#5	#6

Features, pricing & fit

Dimension	Relevance AI	Stack AI
Pricing model	Flat tiers	Usage-based
Entry price	Contact sales	Contact sales
Free plan	No	Yes
Deployment	—	Multi-tenant cloud, VPC, or on-premise
Integrations	2000+	500+
Compliance	SOC 2, GDPR	HIPAA, GDPR, SOC 2 Type II, ISO 27001
Support	Embedded deployment team, Dedicated account manager on Enterprise plan	Community support on Discord, Email support, Priority support, Dedicated support
Founded	2020	2023
Headquarters	San Francisco, California, United States	San Francisco, CA, United States
Employees	51–200	51–200
Funding	Series A (unconfirmed, reported by Signalbase) · $37M raised	Series A · $19M raised
Best for	Enterprise teams in sales, customer success, marketing and HR that want non-technical staff to build and run their own agents.	IT teams and enterprise architecture teams that need to orchestrate, deploy, govern, and scale AI across the enterprise, including finance, risk and operations teams.