Comparison

Relevance AI vs Stack AI

On the evidence we track, Stack AI leads this comparison with a composite score of 65/100. Scores are only directly comparable because these tools share a category; the full breakdown and every source is below.

Relevance AI full profile →Stack AI full profile →

Machine formatsJSON Markdown GraphQLor send Accept: application/json

Relevance AI29

★Stack AI65

Attribute comparison across 2 tools
Attribute	Relevance AI	Stack AILeader
Vioscale score	29 / 100low · 40%	65 / 100low · 46%
Pricing
Free tierpricing.free_tier	-	✓
Modelpricing.model	commercial	freemium
Price levelpricing.price_level	unknown	low
Transparentpricing.transparent	✗	✗
Integrations
Countintegrations.count	7	100
Security
Disclosure policysecurity.disclosure_policy	-	✓
Gdprsecurity.gdpr	-	✓
Hipaasecurity.hipaa	-	✓
Iso27001security.iso27001	-	✓
Soc2security.soc2	✓	✓
Market
Availabilitymarket.availability	Available worldwide · Popular in US	Available worldwide · Popular in US

Score

Vioscale score

Relevance AI29 / 100low · 40%

Stack AI65 / 100low · 46%

Pricing

Free tier

Relevance AI–

Stack AI✓

Model

Relevance AIcommercial

Stack AIfreemium

Price level

Relevance AIunknown

Stack AIlow

Transparent

Relevance AI✗

Stack AI✗

Integrations

Count

Relevance AI7

Stack AI100

Security

Disclosure policy

Relevance AI–

Stack AI✓

Gdpr

Relevance AI–

Stack AI✓

Hipaa

Relevance AI–

Stack AI✓

Iso27001

Relevance AI–

Stack AI✓

Soc2

Relevance AI✓

Stack AI✓

Market

Availability

Relevance AIAvailable worldwide · Popular in US

Stack AIAvailable worldwide · Popular in US

Capabilities

Feature-by-feature on the axes that matter for ai workflow automation. “-” means undocumented, not absent.

Capability comparison for AI Workflow Automation
Capability	Relevance AI	Stack AI
Capabilities
Builder UI architecture	Visual node canvas	Visual node canvas
Native LLM nodes anthropic openai gemini	✓	✓
Human in the loop approval steps via slack email	✓	✓
Unstructured document extraction PDF image to json	-	✓
Dynamic conditional routing via LLM classification	-	✓
Web scraping and browser automation nodes	✓	✓
Bring your own key byok for LLM inference	-	-
Custom HTTP webhook catch and triggering	-	-
Sub workflow calling and reusable templates	✓	✓
On premise self hosted deployment option	-	✓
SOC2 type ii	-	✓
ISO 27001	-	✓
Pricing model	-	Freemium with task credits

Capabilities

Builder UI architecture

Relevance AIVisual node canvas

Stack AIVisual node canvas

Native LLM nodes anthropic openai gemini

Relevance AI✓

Stack AI✓

Human in the loop approval steps via slack email

Relevance AI✓

Stack AI✓

Unstructured document extraction PDF image to json

Relevance AI-

Stack AI✓

Dynamic conditional routing via LLM classification

Relevance AI-

Stack AI✓

Web scraping and browser automation nodes

Relevance AI✓

Stack AI✓

Bring your own key byok for LLM inference

Relevance AI-

Stack AI-

Custom HTTP webhook catch and triggering

Relevance AI-

Stack AI-

Sub workflow calling and reusable templates

Relevance AI✓

Stack AI✓

On premise self hosted deployment option

Relevance AI-

Stack AI✓

SOC2 type ii

Relevance AI-

Stack AI✓

ISO 27001

Relevance AI-

Stack AI✓

Pricing model

Relevance AI-

Stack AIFreemium with task credits

What each one is

The product in its own terms, so the numbers below have context.

Relevance AI

An enterprise platform enabling teams to create, deploy, and manage AI agents tailored to specific business tasks. Includes built-in monitoring, automated model optimization across providers, human approval workflows, and embedded deployment support.

Independently observed

Stack AI

Leader

StackAI enables organizations to create AI agents that orchestrate tasks, integrate with existing systems, and maintain human oversight for sensitive operations. It's designed for enterprise teams to automate compliance, data processing, and complex workflows at scale.

Independently observed

Pricing

List pricing as published by each vendor, with the date we read it. Always verify at the source before you buy.

Relevance AI

Usage-based

Usage-based, starting from $0.14 per task; enterprise quotes available

as of 2026-08-25verify ↗

Stack AI

Leader

freemium_with_task_creditsFree tier

Free tier with 500 runs/month; custom enterprise pricing available

FreeFree
- 500 runs per month
- 2 Projects
- 1 Seat
- Community support on Discord
- Agents, Inputs (Text, Image, Audio, Video)
- +5 more
CustomContact sales
- Custom number of runs
- Unlimited projects
- Custom number of seats
- All features and data loaders
- Dedicated infrastructure
- +13 more

as of 2026-08-25verify ↗

Platform & deployment

Where each product runs and how it can be hosted. A dash means undocumented, not unsupported.

Platform and deployment support comparison
Supports	Relevance AI	Stack AI
WebPlatforms	✓	✓
CLIPlatforms	✓	✓
Cloud / SaaSDeployment	✓	✓
Self-hostedDeployment	✗	✓
On-premiseDeployment	✗	✓
HybridDeployment	✗	✓

Platforms

Web

Relevance AI✓

Stack AI✓

CLI

Relevance AI✓

Stack AI✓

Deployment

Cloud / SaaS

Relevance AI✓

Stack AI✓

Self-hosted

Relevance AI✗

Stack AI✓

On-premise

Relevance AI✗

Stack AI✓

Hybrid

Relevance AI✗

Stack AI✓

Integrations

What each product connects to. Counts come from the vendor's own integration directory where one exists.

In common (1)

Salesforce

Relevance AI

7 total - 6 not shared

YouTube
LinkedIn
Google
WhatsApp
BuiltWith
Spoken.md

Independently observed

Stack AI

Leader

10 total - 9 not shared

Slack
Microsoft Teams
Email
Google Drive
Notion
Asana
SharePoint
Chrome Extension
REST API

Independently observed

Comparison generated from independently-sourced facts. Every value links to its source and retrieval date. See the method.