No. 01 · English editionUpdated 19 October 2026 · 133 agents verifiedPricing · Free plan · French · EU hosting
AgentsIA

The AI agents directory for small businesses, sorted by job and checked at the source.

Profile no. 111 · 10 — Automation & custom agents

Stack AI

In brief Stack AI is an AI tool in the “Automation & custom agents” category; starting price: price not published; permanent free plan: yes.

No-code platform for deploying AI agents in the enterprise, with drag and drop.

In practice

The vendor doesn’t publish a starting price on its pricing page: you have to ask. Stack AI offers a permanent free plan. We couldn’t verify whether the site is available in French. European hosting isn’t mentioned on the pages we checked, but GDPR is.

Note

Free plan at $0 (500 runs/month); Enterprise plan on quote.

“Not verified”: information not found on the vendor’s website or pricing page, not necessarily false. Our method · Are you the vendor? Report an update

FAQ

Frequently asked questions

How much does Stack AI cost?

Stack AI doesn’t publish a starting price: you need to ask the vendor for a quote. Information checked on 19 Oct 2026.

Does Stack AI have a free plan?

Yes: Stack AI offers a permanent free plan, according to its pricing page.

Is Stack AI available in French?

Not verified: we couldn’t confirm a French version of Stack AI’s website.

Where is Stack AI’s data hosted?

Stack AI doesn’t clearly state where data is hosted on the pages we checked: ask the vendor. Vendor country: United States.

What are the alternatives to Stack AI?

In the “Automation & custom agents” category, the tools that meet the most verified criteria are Dust and Make (AI agents). The table at the bottom of the page compares all the alternatives.

Answers based solely on information published by the vendors and collected on 19 Oct 2026.

Going further

Alternatives

Stack AI alternatives

See the whole category →
No.AgentStarting priceFreeFREU
49 Make (AI agents) CzechiaVisual automation platform (Czech) with Make AI Agents connected to thousands of apps. Price on websiteYesn/vn/v
50 n8n GermanyWorkflow and AI agent automation, in the cloud or self-hosted (German vendor). Starter €20/monthn/vn/vn/v
51 Zapier Agents United StatesZapier’s AI agents, which take action across thousands of connected apps. $19.99/monthYesn/vn/v
52 Lindy United StatesAI assistant that gets tasks done: email, calendar, meetings, follow-ups and prospecting. Team $29.99/monthNon/vn/v
53 Dust FranceFrench platform for building AI agents connected to your company’s tools (Notion, Slack, Drive…). Pro €24/seat/month excl. VATYesn/vYes
54 Relevance AI AustraliaPlatform for building a no-code “team” of business AI agents (sales, operations). Price on websiten/vn/vn/v
55 Langdock GermanyGerman enterprise AI platform: multi-model chat, agents, workflows and API. €25/user/month excl. VATNon/vn/v
56 Gumloop United StatesBuild AI agents and automations with drag and drop, connected to your tools. Pro $37/monthNon/vn/v
108 Activepieces United StatesAutomation and AI agent platform with an open-source core and more than 760 connected apps. Plus $20/monthYesn/vn/v
109 Microsoft Copilot Studio United StatesMicrosoft tool for building AI agents connected to Microsoft 365 and to external channels (website, apps). €173.30 excl. VAT or pay as you gon/vYesn/v
110 Voiceflow CanadaPlatform for designing and deploying chat and voice AI agents for support and customer relations. Price on websiten/vn/vn/v