The Stack AI Insider’s Guide
Everything we know about Stack AI in one document: what it costs, its grades, getting a refund, getting help and what else to look at. Read it here, or keep a copy.
Stack AI
The Insider’s Guide
Enterprise platform for building and deploying AI agents
Every plan, grade, refund rule and rival among AI agents, read from Stack AI’s own pages.
Made by StackAI · checked Nov 12, 2026 · toolgpa.com
Contents
- 01WelcomeWhat it is, who it suits, its grades and the ten things to know first
- 02What it costsEvery plan, the free plan, ways to pay less and how prices have moved
- 03What it doesIts main features, where it runs, what it works with and who makes it
- 04Where it standsIts grades against its category, and whether to keep it or make your own
- 05The alternativesThe tools it is most often weighed against, side by side
- 06Quick answersThe questions people ask about it, each answered in a line or two
- 07About ToolGPAWho made this guide, what else is on the site, and how to cite it
ToolGPA put this guide together from Stack AI’s own pages, its app-store listings and our grades. Every fact in it is on Stack AI’s page too, where it is kept up to date. Checked Nov 12, 2026.
Part 01 · Overview
Welcome
What it is, who it suits, its grades and the ten things to know first
2.2
GPA, above 36 of the 101 other AI agents we grade
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.
To get you started, here are 8 things to know about Stack AI, taken from its own pages and our grades.
No store rating on record, and building an agent means setting up flows and data.
- 1
Best for building a first AI agent on a free plan
Beyond that there is only a custom Enterprise plan, and its homepage says Asana acquires StackAI, so plans may change.
- 2
There is a free plan
500 runs per month, 2 projects, 1 seat and community support on Discord.
- 3
It runs on Web
Web, with a browser extension too.
- 4
Agent and flow builder
The comparison table lists Agents and Flow modules, with Python and JavaScript code steps for custom logic.
- 5
Multi-modal inputs
Agents take text, image, audio and video inputs and return text, image or audio, with vision and speech modules.
- 6
Knowledge bases and data loaders
Load documents (PDF, Word, PowerPoint), web scrapes, Google Drive and Notion content into a knowledge base.
- 7
A 2.2 GPA, above 36 of 101
That is against the other AI agents we grade, on value, the free plan, features, ease of use and platforms.
- 8
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.
Stack AI at a glance
- Pricing
- Free plan
- Free plan
- Yes
- Free trial
- None stated
- Runs on
- Web, Browser extension
- Made by
- StackAI
- Category
- AI Agents
- Our grade
- 2.2 GPA, fair
The report card
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.
| Subject | Grade | Comment |
|---|---|---|
| Value for money | C | Only Free and a custom Enterprise plan are listed, so there is no published paid price to set against the category. |
| Free plan and trial | C | Free allows 500 runs a month, 2 projects and 1 seat, with community support on Discord. You will hit those caps. |
| Features | C | A flow builder, knowledge bases and data loaders, and several ways to ship an agent. SSO, VPC, on-prem and BAA sit on Enterprise only. |
| Ease of use | C | No store rating on record, and building an agent means setting up flows and data. |
| Platforms and integrations | B | Web plus a browser extension, with Slack, Google Drive and Notion listed. |
An A is worth 4 points, a B 3, a C 2, a D 1 and an F nothing. The GPA is the average of the five.
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 it 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
Good to know
Good for
- Enterprise IT teams deploying agents in regulated industries
- Teams processing unstructured documents with agents
- Individuals trying the builder on the free plan
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.
Part 02 · Pricing
What it costs
Every plan, the free plan, ways to pay less and how prices have moved
2
plans to choose from
Stack AI has a free plan.
Only Free and a custom Enterprise plan are listed, so there is no published paid price to set against the category.
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.
The free plan
500 runs per month, 2 projects, 1 seat and community support on Discord.
Read from stackai.com on Nov 12, 2026.
Part 03 · Features
What it does
Its main features, where it runs, what it works with and who makes it
2
Places it runs: Web and Browser extension
Enterprise platform for building and deploying AI agents. Here is what it does, as its own site describes it, and what it covers: public API, workflow automation, AI agents.
A flow builder, knowledge bases and data loaders, and several ways to ship an agent.
- 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.
Where it runs
- Web
- Browser extension
What it works with
- Slack
- Google Drive
- Notion
Stack AI is made by StackAI.
Part 04 · Standing
Where it stands
Its grades against its category, and whether to keep it or make your own
36/101
Other AI agents it is graded above
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
- CFree plan and trialAbove 28 of 101
- CFeaturesAbove 1 of 101
- CEase of useAbove 14 of 101
- BPlatforms and integrationsAbove 20 of 101
Keep it, or make your own?
Whether this is something you could build for yourself with an AI app builder, and what you would give up.
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.
Part 05 · Alternatives
The alternatives
The tools it is most often weighed against, side by side
Relevance AI, Gumloop, Vellum, Dify and Lindy
The 5 tools Stack AI is most often weighed against, with where each one differs from it.
- 2.0GPA
Relevance AI
From $19/mo
Low-code platform for building AI agents and multi-agent teams.
- Stack AI has a free plan. Relevance AI does not.
- Only Relevance AI lists iOS and Android apps.
- Relevance AI also covers chat assistant and no-code.
- 2.0GPA
Gumloop
Free trial · from $37/mo
AI agent builder for teams, with unlimited seats on shared credits.
- Stack AI has a free plan. Gumloop does not, though it has a free trial.
- Only Stack AI lists a browser extension.
- Gumloop also covers no-code.
- 2.6GPA
Vellum
Free plan · from $30/mo
Personal AI assistant with long-term memory that acts across apps.
- Only Vellum lists macOS, Windows, iOS and Android apps.
- Vellum is open source and self-hostable, according to its own site.
- Vellum also covers chat assistant.
- 2.2GPA
Dify
Free plan · from $590/yr
Open-source platform for building AI agents and agentic workflows.
- Only Stack AI lists a browser extension.
- Dify is open source and self-hostable, according to its own site.
- Dify also covers no-code.
- 2.4GPA
Lindy
Free trial · from $29.99/mo
AI teammate for Slack that works across your team's tools.
- Stack AI has a free plan. Lindy does not, though it has a free trial.
- Lindy also covers meeting notes, chat assistant and inbox filtering.
Part 06 · Questions
Quick answers
The questions people ask about it, each answered in a line or two
12
Questions, each answered in a line or two
The short version of everything above, for when you only need the answer. Each one is told in full in its part of the guide.
Is Stack AI free?
Stack AI has a free plan. 500 runs per month, 2 projects, 1 seat and community support on Discord.
How much does Stack AI cost?
Stack AI lists 2 plans. Free plan: $0.
What platforms does Stack AI work on?
Stack AI is available on Web. It also has a browser extension.
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.
What does Stack AI integrate with?
Stack AI's listing names Slack, Google Drive and Notion. A listing names up to eight integrations, so it may connect to more.
Who makes Stack AI?
Stack AI is made by StackAI.
What are the alternatives to Stack AI?
The closest alternatives to Stack AI in our directory are Relevance AI, Gumloop, Vellum, Dify and Lindy.
How does Stack AI compare with other 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.
Could I make my own version of Stack AI?
To replace Stack AI you would be making an AI agent, with the models and the safeguards behind it.
Where this guide comes from
The prices, plans, platforms and features were read from Stack AI’s own pages on Nov 12, 2026, and the grades were given on Nov 12, 2026. 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.
Every tool we list gets five grades, A to F, each with its reason, and a GPA that averages them. How each is decided is at toolgpa.com/grades. This guide is ToolGPA’s own work; it is not made, paid for or approved by StackAI. Prices change, so check stackai.com before you buy.
Part 07 · About
About ToolGPA
Who made this guide, what else is on the site, and how to cite it
5,038
Tools graded, in 95 categories
ToolGPA grades software the way a school report grades a pupil: five subjects, a letter for each with the reason written beside it, and a GPA that averages them. Prices, plans and platforms are read from each maker’s own pages and dated, so you always know how fresh a figure is.
Every grade, review and ranking on ToolGPA is our own judgement. No company can pay for a grade or change one. Every tool on the site has a guide like this one, free to download and pass on. It all lives at toolgpa.com.
5,038
tools graded
95
categories
739
price changes on record
579
apps priced in 12 countries
What else is on toolgpa.com
- Stack AI, kept up to dateEverything in this guide, with prices and grades as they are todaytoolgpa.com/tools/stack-ai
- How grades are givenThe rules behind every letter and every GPAtoolgpa.com/grades
- Value chartsWhat each tool costs against what it scores, for every categorytoolgpa.com/charts
- CompareAny two tools side by side, plan by plantoolgpa.com/compare
- Price changesEvery price rise and cut on record, each with its sourcetoolgpa.com/price-changes
- Prices by countryWhat apps cost on the App Store in 12 countriestoolgpa.com/prices-by-country
- Pay lessEvery public discount: yearly billing, students, nonprofitstoolgpa.com/save
- Keep or makeWhich tools are worth paying for, and which you could build yourselftoolgpa.com/keep-or-make
Scan for the live page
Prices and grades as they are today
Quoting this guide?
Please name ToolGPA and link to the live page, so readers can check the figures for themselves:
ToolGPA, "Stack AI: The Insider's Guide", checked Nov 12, 2026. https://toolgpa.com/tools/stack-ai
Know someone choosing between AI agents?
Send them this guide: toolgpa.com/tools/stack-ai/guide
ToolGPA elsewhere: youtube.com/@toolgpa
See our other guides
The best-graded AI agents after Stack AI, each with an Insider's Guide of its own.
- AI Agents Insider's GuideEvery one of the 102 AI agents we grade, compared
- Genspark Insider's GuideAI workspace with an agent for research, slides, sheets and docs3.2 GPA
- Manus Insider's GuideGeneral AI agent for research, slides, websites and browser tasks3.2 GPA
- OpenClaw Insider's GuideOpen-source personal AI agent you run yourself and message in chat3.2 GPA
Choosing software? Every tool graded, every price dated.
Compare tools at toolgpa.com ›Everything in this guide is ToolGPA’s own summary of what Stack AI’s pages, its app-store listings and public reviews said on the dates shown. Grades are our judgement under the rules at toolgpa.com/grades. Every grade, review and ranking on ToolGPA is our own judgement. No company can pay for a grade or change one. Stack AI is a trademark of its owner, and this guide is not made, paid for or approved by StackAI. Prices and plans change: check stackai.com before you buy.