Stack AI review (2026): is the free plan enough?
Enterprise platform for building and deploying AI agents
Black Friday: is there a Stack AI sale?
Stack AI report card
Fair · out of 4.0 · graded Nov 12, 2026
Best for building a first AI agent on a free plan
Stack AI is a platform for building and deploying agents, with a free plan of 500 runs a month, 2 projects and 1 seat. Beyond that there is only a custom Enterprise plan, and its homepage says Asana acquires StackAI, so plans may change.
Who Stack AI is for
- Fits if you want to build one or two agents and try them free
- Makes sense if you plan to ask for an enterprise deployment later
Who Stack AI is not for
- Tight if you work in a team, as Free is 1 seat and 2 projects
- Not for you if you want a self-serve paid plan, because none is published
- Watch out: SSO, access control, VPC and on-prem are Enterprise only
- Watch out: the homepage says Asana acquires StackAI, so ownership and plans may change
Why Stack AI gets a 2.2
Five grades, each with its reason. The GPA is their average: an A is 4 points, an F is none.
- CValue for moneyOnly Free and a custom Enterprise plan are listed, so there is no published paid price to set against the category.
- CFree plan and trialFree allows 500 runs a month, 2 projects and 1 seat, with community support on Discord. You will hit those caps.
- CFeaturesA flow builder, knowledge bases and data loaders, and several ways to ship an agent. SSO, VPC, on-prem and BAA sit on Enterprise only.
- CEase of useNo store rating on record, and building an agent means setting up flows and data.
- BPlatforms and integrationsWeb plus a browser extension, with Slack, Google Drive and Notion listed.
What these grades rest on. Graded from this listing, whose facts were read from Stack AI's own pages on 12 November 2026. Not based on using the product, and shorter than our full reviews. How we review and grade.
Make Stack AI? Put this grade on your site
Paste this where you want the badge. It links here and follows the grade if it changes. About badges
<a href="https://toolgpa.com/tools/stack-ai#review"><img src="https://toolgpa.com/badge/stack-ai.svg" alt="Stack AI: 2.2 GPA on ToolGPA" width="196" height="56"></a>Where Stack AI stands among AI agents
Stack AI's GPA of 2.2 is higher than 36 of the 101 other AI agents we grade, and level with 24.
It stands best on platforms and integrations (B, above 20 of 101) and worst on features (C, above 1).
Each grade against the category
Every bar is all 102 AI agents we grade, cut by the letter each got. Stack AI’s own letter is outlined.
- CValue for moneyAbove 17 of 101, level with 56
- CFree plan and trialAbove 28 of 101, level with 53
- CFeaturesAbove 1 of 101, level with 67
- CEase of useAbove 14 of 101, level with 78
- BPlatforms and integrationsAbove 20 of 101, level with 71
Keep Stack AI, or make your own?
Keep it
To replace Stack AI you would be making an AI agent, with the models and the safeguards behind it. That is not a weekend's work, with an AI app builder or without one.
What you could not
- An AI agent, with the models and the safeguards behind it.
- Connections to other products, each kept working as those products change.
- What a company asks for before it lets staff use something: single sign-on, SOC 2 and HIPAA.
What this rests on. Stack AI’s listing: what it does, where it runs, what it plugs into and what it costs. It is a judgement about the kind of software this is. We have not built a replacement for it, and making your own means looking after it too. How we decide, and every tool’s verdict.
What is Stack AI?
StackAI is a platform for building AI agents and workflows that process documents and connect to a company's existing systems. It lists a free plan with 500 runs a month and a custom enterprise plan with SSO, VPC or on-premise deployment and compliance support. Its homepage announces that Asana acquires StackAI.
Worth knowing
- Only a Free plan and a custom Enterprise plan are listed; there is no published self-serve paid tier.
- The free plan has 1 seat, 2 projects and 500 runs a month.
- SSO, access control, VPC, on-prem and BAA are Enterprise features.
- Its homepage says Asana acquires StackAI, so plans and ownership may change.
Key features
- Agent and flow builder
- The comparison table lists Agents and Flow modules, with Python and JavaScript code steps for custom logic.
- Multi-modal inputs
- Agents take text, image, audio and video inputs and return text, image or audio, with vision and speech modules.
- Knowledge bases and data loaders
- Load documents (PDF, Word, PowerPoint), web scrapes, Google Drive and Notion content into a knowledge base.
- Ways to ship an agent
- Deploy through a REST API, a Chrome extension or a Slack bot; custom domains and analytics are listed.
- Security and deployment options
- Enterprise offers SSO, access control, VPC and on-premise deployment, and the page claims SOC 2, HIPAA and GDPR compliance.
Stack AI pricing
As of Nov 12, 2026, Stack AI has a free plan.
- Starts at
- Not published
- Free plan
- 500 runs per month, 2 projects, 1 seat and community support on Discord.
- Free trial
- None listed
| Plan | Price | What you get |
|---|---|---|
| Free plan | $0 | 500 runs per month, 2 projects, 1 seat and community support on Discord. |
| Enterprise | Custom | Custom runs and seats, unlimited projects, dedicated infrastructure, SSO, VPC or on-prem deployment. |
Read from stackai.com on Nov 12, 2026. Prices change, so confirm with Stack AI before you buy.
Works with
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- Stack AI vs Vellum
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- Stack AI vs Dify
Free plan · from $590/yr
- Stack AI vs Lindy
Free trial · from $29.99/mo
Common questions
Does Stack AI have an Android app?
No Android app was listed when its pages were read on Nov 12, 2026. Stack AI is listed for Web.
Does Stack AI have an iPhone app?
No iPhone app was listed when its pages were read on Nov 12, 2026. Stack AI is listed for Web.
Is Stack AI open source?
Stack AI is not described as open source on its own site, as read on Nov 12, 2026.
Does Stack AI have an API?
Yes. Stack AI offers a public API, according to its own site.
Sources for this page
The prices, plans, platforms and features above were read from these pages on Nov 12, 2026.