Summary based on https://www.stack-ai.com/ and related official pages (pricing, docs, blog, academy, status, customers). StackAI is presented as an end-to-end, no-code/low-code enterprise platform to build, deploy, and govern AI agents and workflows operating on unstructured data (PDFs, scans, documents) and other inputs. The product is positioned as enterprise/IT/architecture-first with emphasis on governance, security, and production readiness (on-prem and VPC deployment options and compliance claims such as SOC 2 Type II, HIPAA, and GDPR). Key capabilities include a visual Workflow Builder (drag-and-drop), goal-based and utility agents with pre-built UIs and custom interface deployment (web, Slack, bots), multiple data ingestion methods (file upload, Google Drive, Notion, web scraping, enterprise connectors like SharePoint, Salesforce, SAP, Snowflake referenced in docs), RAG-enabled knowledge retrieval with cited answers, document generation and integrations with Google Docs and Microsoft Word, support for common LLMs (GPT-4, GPT-3.5, Anthropic Claude 2/3 referenced in pages), multi-modal inputs/outputs (images, audio, video, vision, speech-to-text, TTS), Tools/function-calling support (no-code), broad integrations (browser extension, REST API, Slack bot, many enterprise connectors), observability and governance features (analytics, agent monitoring, audit logs, approval flows), RBAC and SSO controls, and professional services (forward-deployment engineers, co-building sessions, Stackathons, solution engineers, quarterly business reviews). Public pricing shows a Free Starter Plan (0 USD/month with 500 runs/month, 2 projects, 1 seat, community Discord support) and a Custom/Enterprise plan available by quote (custom runs & seats, dedicated infrastructure and solution engineering, enhanced security/on-prem/VPC options, SSO, compliance assurances). The pricing page presents a broad feature matrix; enterprise quotas and exact pricing beyond the Free tier are not published and require Sales contact or a demo. Known customers and case studies listed on the site include LifeMD, MIT Martin Trust Center, Noblereach, and Varos. Commonly showcased use cases include underwriting/reconciliation, IT support/ticket triage, CRM enrichment, RFP drafting, automated report generation, document classification, and research automation. Documentation, an academy for guided training, a status page, and a blog are available from the official site. Gaps identified that need confirmation: exact enterprise pricing tiers (per-run or per-agent costs and overage pricing), SLA/uptime guarantees and full DPA wording, full and final ISO 27001 status, exact list and availability of enterprise integrations/connectors (whether add-ons), and whether StackAI bills model/compute usage or passes charges through providers. Recommended next steps: book a demo/contact Sales for pricing, SLAs and tailored quotes; review Workflow Builder and integration docs at the docs site; request DPA/compliance artifacts and on-prem/VPC details for regulated evaluations; trial the Free Starter and Academy for hands-on validation; and monitor status and changelog during evaluation.