# Stack AI review (2026): is the free plan enough? > Enterprise platform for building and deploying AI agents Checked Nov 12, 2026 ยท graded Nov 12, 2026 by ToolGPA. 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. - **Category:** AI Agents - **Made by:** StackAI - **Website:** https://www.stackai.com - **Runs on:** Web, Browser extension - **Who should skip it:** Tight if you work in a team, as Free is 1 seat and 2 projects. - **Facts last checked:** Nov 12, 2026 ## Pricing As of Nov 12, 2026, Stack AI has a free plan. - **Pricing model:** Free plan - **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 https://www.stackai.com/pricing on Nov 12, 2026. Prices change, so confirm with Stack AI before buying. ## 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. ## 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. ## ToolGPA grades **GPA: 2.2 out of 4**, graded Nov 12, 2026. 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. - **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. These are ToolGPA's own grades. 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. ## Where it 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). The category's chart of price against score: https://toolgpa.com/charts/ai-agents ## Keep it, 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. - You could not: An AI agent, with the models and the safeguards behind it. - You could not: Connections to other products, each kept working as those products change. - You could not: What a company asks for before it lets staff use something: single sign-on, SOC 2 and HIPAA. A judgement by ToolGPA from this listing, by rules that are the same for every tool. Nothing was built to test it. ## Works with Slack, Google Drive, Notion **Tags:** AI agents, Workflow automation, Public API ## Alternatives - [Relevance AI](https://toolgpa.com/tools/relevance-ai): Low-code platform for building AI agents and multi-agent teams. [Compare](https://toolgpa.com/compare/relevance-ai-vs-stack-ai) - [Gumloop](https://toolgpa.com/tools/gumloop): AI agent builder for teams, with unlimited seats on shared credits. [Compare](https://toolgpa.com/compare/gumloop-vs-stack-ai) - [Vellum](https://toolgpa.com/tools/vellum-ai): Personal AI assistant with long-term memory that acts across apps. [Compare](https://toolgpa.com/compare/stack-ai-vs-vellum-ai) - [Dify](https://toolgpa.com/tools/dify): Open-source platform for building AI agents and agentic workflows. [Compare](https://toolgpa.com/compare/dify-vs-stack-ai) - [Lindy](https://toolgpa.com/tools/lindy): AI teammate for Slack that works across your team's tools. [Compare](https://toolgpa.com/compare/lindy-vs-stack-ai) ## Sources The prices, plans, platforms and features above were read from these pages on Nov 12, 2026: - https://www.stackai.com/pricing - https://www.stackai.com Page: https://toolgpa.com/tools/stack-ai Listed by ToolGPA (toolgpa.com).