Comparison

Lindy vs Stack AI

On the evidence we track, Lindy leads this comparison with a composite score of 77/100. Scores are only directly comparable because these tools share a category; the full breakdown and every source is below.

Lindy full profile →Stack AI full profile →

Machine formatsJSON Markdown GraphQLor send Accept: application/json

★Lindy77

Stack AI65

Attribute comparison across 2 tools
Attribute	LindyLeader	Stack AI
Vioscale score	77 / 100medium · 56%updating	65 / 100low · 46%updating
Pricing
Free tierpricing.free_tier	✓	✓
Modelpricing.model	freemium	freemium
Price levelpricing.price_level	mid	low
Starting pricepricing.starting_price	$29.99	-
Transparentpricing.transparent	✓	✗
Integrations
Countintegrations.count	1,000	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

Lindy77 / 100medium · 56%updating

Stack AI65 / 100low · 46%updating

Pricing

Free tier

Lindy✓

Stack AI✓

Model

Lindyfreemium

Stack AIfreemium

Price level

Lindymid

Stack AIlow

Starting price

Lindy$29.99

Stack AI–

Transparent

Lindy✓

Stack AI✗

Integrations

Count

Lindy1,000

Stack AI100

Security

Disclosure policy

Lindy–

Stack AI✓

Gdpr

Lindy✓

Stack AI✓

Hipaa

Lindy✓

Stack AI✓

Iso27001

Lindy–

Stack AI✓

Soc2

Lindy✓

Stack AI✓

Market

Availability

LindyAvailable 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	Lindy	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	Per user seat	Freemium with task credits

Capabilities

Builder UI architecture

LindyVisual node canvas

Stack AIVisual node canvas

Native LLM nodes anthropic openai gemini

Lindy✓

Stack AI✓

Human in the loop approval steps via slack email

Lindy✓

Stack AI✓

Unstructured document extraction PDF image to json

Lindy✓

Stack AI✓

Dynamic conditional routing via LLM classification

Lindy✓

Stack AI✓

Web scraping and browser automation nodes

Lindy✓

Stack AI✓

Bring your own key byok for LLM inference

Lindy✗

Stack AI-

Custom HTTP webhook catch and triggering

Lindy✓

Stack AI-

Sub workflow calling and reusable templates

Lindy✓

Stack AI✓

On premise self hosted deployment option

Lindy✗

Stack AI✓

SOC2 type ii

Lindy✓

Stack AI✓

ISO 27001

Lindy✗

Stack AI✓

Pricing model

LindyPer user seat

Stack AIFreemium with task credits

What each one is

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

Lindy

Leader

Lindy is an AI teammate that integrates with your workplace apps including Slack, email, CRM, and over 1,000 business applications to automate routine tasks like email management, scheduling, lead qualification, and customer support. It works directly within Slack and your browser.

Independently observed

Stack AI

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.

Lindy

Leader

from $29.99/seat/moSubscriptionFree tier7-day trial

From $29.99/seat/mo. 7-day free trial.

Starter$29.99/seat/mo, 3,000 credits included
ProMore credits than Starter
MaxMaximum credits and connected inboxes
EnterpriseContact sales
- SSO
- SCIM
- Audit logs
- HIPAA with signed BAA

as of 2026-08-25verify ↗

Stack AI

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	Lindy	Stack AI
WebPlatforms	✓	✓
CLIPlatforms	✓	✓
Cloud / SaaSDeployment	✓	✓
Self-hostedDeployment	✗	✓
On-premiseDeployment	✗	✓
HybridDeployment	✗	✓

Platforms

Web

Lindy✓

Stack AI✓

CLI

Lindy✓

Stack AI✓

Deployment

Cloud / SaaS

Lindy✓

Stack AI✓

Self-hosted

Lindy✗

Stack AI✓

On-premise

Lindy✗

Stack AI✓

Hybrid

Lindy✗

Stack AI✓

Integrations

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

In common (4)

Slack
Google Drive
Notion
Salesforce

Lindy

Leader

13 total - 9 not shared

Gmail
Google Sheets
Google Calendar
HubSpot
Airtable
Calendly
PandaDoc
Parallel Web Systems
MCP (Model Context Protocol)

Independently observed

Stack AI

10 total - 6 not shared

Microsoft Teams
Email
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.