Relevance AI vs Lindy vs Gumloop vs StackAI

Written head to head: Lindy vs Relevance AI, with when to choose each side.

Compared on	Relevance AI Contact sales VisitRemove	Lindy From $29.99/user/mo VisitRemove	Gumloop Free trial · from $37/mo VisitRemove	StackAI Free plan VisitRemove
What it is	Platform for building teams of specialised AI agents for sales and operations	AI assistant that works in Slack, email and meetings to handle routine tasks	AI agent builder for teams, with model choice and admin controls on AI spend	Enterprise no-code platform for building, deploying and governing AI agents
Free plan	No	No	No	500 runs per month; 2 projects; 1 seat; community support on Discord
Cheapest paid plan	Not publishedRelevance AI pricing	$29.99/user/mo (Plus)Lindy pricing	$37/mo (Pro)Gumloop pricing	Not publishedStackAI pricing
What it covers	Not stated	3,000 credits per user per month.	'Starts at' price; 20,000 credits/month included; 8% orchestration fee; unlimited seats.	Not stated
Free trial	None stated	First week free for new teammates who join through Slack; direct sign-ups are billed right away	14-day free trial of Pro	None stated
Platforms	Web, API	Web, Chrome extension	Web	Web, Self-hosted
Integrations (vendor's figure)	1,000+ apps	1,000+ integrations	300+ native integrations	300+ enterprise integrations
Open source	No	No	No	Yes, self-hostable
Good for	Researching and enriching prospect lists before outreach Preparing briefs before sales meetings and drafting follow-ups after calls Drafting proposals from deal information	Triaging an inbox and drafting replies for review Taking meeting notes and sending follow-ups Producing a daily brief from email, calendar and CRM data	Building a shared agent that drafts content or reports from company data Qualifying leads and updating a CRM Analysing sales calls or support tickets	Automating document-heavy compliance or legal review steps Handling IT service requests across ticketing and internal systems Building a customer-support agent grounded in company documents
Watch out for	No published prices, free plan or self-serve plan; getting started means talking to sales The only listed plan (Enterprise) uses custom action and vendor-credit allowances rather than fixed published limits	No free plan; the free week applies only to teammates who join through Slack Credits are allocated per seat each month into a shared pool; when it runs low, Lindy pauses Inbox management covers up to 5 inboxes	No free plan; Pro starts with a 14-day trial When the 20,000 monthly credits run out, agents stop unless pay-as-you-go is turned on ($0.005 per credit; off by default) Pro allows 5 concurrent workflow runs and hosting of 1 MCP server	No self-serve paid plan; anything beyond the free tier is a custom Enterprise quote Free plan: 500 runs a month, 2 projects and 1 seat On-premises and VPC deployment, SSO and dedicated support are Enterprise-only
Made by	OnSearch Pty Ltd (trading as Relevance AI)	Lindy	AgentHub Inc. (Gumloop)	StackAI (owned by Asana, Inc.)

Entry prices are the cheapest paid plan, as each vendor publishes it; “What it covers” says what that price is per (a user, a channel, a brand, a number of contacts). The sources are listed on each tool's page.

Every tool in AI agent builders is on its category page, with the written head-to-heads on Compare.