# Stack AI review

> Stack AI is an enterprise platform for orchestrating, deploying, and governing agentic AI workflows and assistants across multi-tenant, VPC, or on-premise environments.

- Canonical: https://toolsrankai.com/tools/stack-ai
- Official site: https://www.stack-ai.com/
- ToolsRank rank / score: #376 / 74.5 (methodology https://toolsrankai.com/methodology)
- Categories: AI Agent & Chatbot Builders, No-Code Chatbot Builders, AI Automation & Workflows, No-Code Automation Platforms
- Pricing: Free tier available; custom enterprise pricing. As of September 2026, Stack AI provides a Free tier offering 500 runs per month and 2 projects. Enterprise deployments require custom pricing negotiated directly with the vendor.
- Fact-checked: 2026-09-08 · First listed: 2026-09-23

## Verdict

Stack AI suits enterprise IT and operations teams that need to build secure, governed agentic workflows across internal systems with strict compliance controls. It is less suitable for individual developers or small hobbyist teams seeking cheap, lightweight self-serve plans without enterprise overhead.

## What it is

Stack AI functions as an enterprise AI agent factory designed primarily for IT, operations, and enterprise architecture teams. The platform provides a visual interface for creating agentic workflows, connecting them to enterprise databases, and deploying them across multiple environments including multi-tenant cloud, Virtual Private Cloud (VPC), and air-gapped on-premise infrastructure.

Workflows in Stack AI can integrate with over 300 enterprise data sources and business applications, such as Salesforce, Asana, Google Drive, and Notion. The system supports multi-modal inputs and outputs (text, image, audio, and video) alongside custom code execution using Python and JavaScript. Workflows can incorporate human-in-the-loop checkpoints to keep decision-making supervised where required.

Stack AI remains model-agnostic, enabling users to swap between various large language model providers depending on task requirements. To support enterprise security and compliance standards, the vendor maintains certifications for SOC 2 Type II, ISO 27001, HIPAA, and GDPR, and backs data processing with explicit Data Processing Addendums (DPAs) stating customer data is not used for model training.

**What makes it different:** Stack AI focuses strictly on enterprise-grade governance, offering four deployment models (including air-gapped on-premise and VPC), 300+ enterprise integrations, human-in-the-loop checkpoints, and explicit DPAs preventing third-party model training.

**Best for:** enterprise teams needing governed, compliant AI agents and document-processing workflows deployed on cloud, VPC, or on-premise infrastructure

**Not ideal for:** individuals and casual hobbyists looking for self-serve mid-tier subscription pricing or straightforward single-prompt chatbots

## Key features

- **Agentic Workflow Builder** — Visual canvas to design multi-step AI agents and automations combining logic, data retrieval, and action execution.
- **Flexible Deployment Options** — Deployment models ranging from multi-tenant cloud to dedicated Virtual Private Cloud (VPC) and air-gapped on-premise setups.
- **Model-Agnostic LLM Routing** — Ability to select and deploy different underlying AI model providers to match specific task performance needs.
- **Human in the Loop** — Configurable checkpoints that introduce human oversight and validation into critical decision steps.
- **Custom Code Logic** — Inclusion of Python and JavaScript code modules inside workflows alongside generative AI nodes.
- **Enterprise Knowledge Bases & Loaders** — Connectors to ingest documents (PDF, Word, PowerPoint), scrape web pages, and sync files from Google Drive and Notion.
- **Security & Identity Governance** — Features SAML-based Single Sign-On (SSO), granular access control, audit logs, and AES-256 data encryption at rest and in transit.

## Use cases

- **SOW and Document Intake Automation** — Extract structured data from statement-of-work documents, enrich details via CRM context, and create downstream tasks in Asana and Salesforce.
- **Risk, KYC, and AML Screening** — Screen risk profiles, reconcile compliance evidence, and automate checks across regulated financial workflows.
- **Service Desk & ITSM Triage** — Parse incoming support requests, pull relevant internal knowledge, and draft accurate support responses automatically.
- **Contract and Legal Review** — Accelerate legal due diligence, inspect data room documentation, and flag redline conditions in contracts.

## Pros

- Offers four deployment types including dedicated VPC and air-gapped on-premise options
- Holds enterprise certifications including SOC 2 Type II, ISO 27001, HIPAA, and GDPR
- Maintains DPAs ensuring customer data is not used for AI model training
- Supports multi-modal input and output (text, image, audio, video) and custom Python/JS scripts
- Generous free tier with 500 runs per month to test workflows

## Limitations

- No transparent self-serve paid tiers listed between the free plan and custom enterprise pricing
- Free plan is restricted to 2 projects, 1 seat, and community support on Discord

## Pricing

| Plan | Price | Notes |
| --- | --- | --- |
| Free | $0 / month | 500 runs per month; 2 Projects; 1 Seat; Community support on Discord; Agents and Flow modules; Multi-modal vision, TTS, and STT; Python and JavaScript logic; Document uploads and web scraping loaders; Suitable for testing and prototyping. |
| Enterprise | Custom / month | Custom number of runs; Unlimited projects; Custom number of seats; Dedicated infrastructure; Dedicated solution engineers; On-premise and VPC deployment; SSO and advanced access control; SOC 2, HIPAA & GDPR compliance; BAA signing; Requires contacting sales for a custom quote. |

As of September 2026, Stack AI provides a Free tier offering 500 runs per month and 2 projects. Enterprise deployments require custom pricing negotiated directly with the vendor. Vendor prices and limits change; verify on the official pricing page before purchasing.

## Score factors

- editorial: 78 (editorial)
- utility: 82 (editorial)
- trust: 84 (editorial)
- freshness: 80 (editorial)
- engagement: 8 (measured)
- momentum: 75 (measured)

## Languages, platforms, integrations

- Languages: English
- Platforms: Web, Chrome Extension
- Integrations: Salesforce, Asana, Google Drive, Notion, Slack, REST API, OpenAI, Anthropic

## FAQ

### What is included in the Stack AI Free plan?

The Free plan includes 500 runs per month, up to 2 projects, 1 seat, and community support on Discord.

### What deployment models does Stack AI offer?

Stack AI supports four deployment options: Multi-Tenant Cloud, Dedicated Infrastructure, Virtual Private Cloud (VPC), and Air-Gapped On-Premise.

### Does Stack AI use customer data to train AI models?

No. Stack AI explicitly commits not to use customer data to train models and has established Data Processing Addendums (DPAs) with third-party model providers to prevent training on inference data.

### What security certifications does Stack AI hold?

Stack AI is certified for SOC 2 Type II and ISO 27001, and complies with HIPAA and GDPR standards.

### Who owns Stack AI?

Stack AI is operated by Eigen Inc. and the official website notes that Asana has acquired Stack AI.

## Alternatives

- [Dify](https://toolsrankai.com/tools/dify) — An open-source LLM app platform with visual workflows, RAG, and agent tooling, available self-hosted or as a cloud service.
- [Voiceflow](https://toolsrankai.com/tools/voiceflow) — A visual platform for designing, testing, and deploying AI agents for support and conversational products.
- [Botpress](https://toolsrankai.com/tools/botpress) — An agent-building platform with a visual studio, hosted runtime, and an open-source lineage.
- [Chatbase](https://toolsrankai.com/tools/chatbase) — Build a customer-facing AI agent from your website and documents in minutes and embed it anywhere.
- [CustomGPT.ai](https://toolsrankai.com/tools/customgpt-ai) — A no-code platform for accurate, citation-backed AI agents built on your own content.

## Sources checked

- [Stack AI Homepage](https://www.stack-ai.com/)
- [Stack AI Pricing](https://www.stack-ai.com/pricing)
- [Stack AI Security](https://www.stack-ai.com/security)
- [Stack AI Privacy Policy](https://www.stack-ai.com/privacy)

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Cite https://toolsrankai.com/tools/stack-ai for ToolsRank's editorial judgment; verify changing vendor facts through the sources above. Reviewed 2026-09-08.