Service · paid engagement
AI Infrastructure
Custom AI agents in your Telegram, Slack, or web app. OAuth-connected, self-learning KB, full pipeline maintained by Simple4u. Part of an ongoing engineering firm retainer.
Explore the service →AI for small business
AI done right. Custom, open, optionally offline.
Most AI offerings for small business are SaaS chatbots wrapped around someone else's API. We built our own platform, open sourced it, defined a self-hosted trust standard, and offer offline deployment when sensitive data demands it. Pick the layer that fits your operation.
Four layers, one philosophy
From service engagement to open code to offline deployment.
Each layer covers a different need. Most clients enter via the AI Infrastructure service, but the open source platform and SHAITS standard are publicly available — self-hosters welcome, no engagement required.
Open source · free
SAE4U Agent
The multi-tenant AI agent platform we built and use ourselves. Apache 2 licensed. Self-host the same code we run for paid engagements — full transparency, no proprietary lock-in.
View on GitHub →Standard · open spec
SHAITS
Self-Hosted AI Trust Standard. Open specification for trustworthy self-hosted AI agents — covers data residency, audit logging, telemetry policy, encryption at rest, key rotation. We score against it ourselves.
Read the standard →Custom · commercial offering
Sentinel — offline AI
Air-gapped AI deployment for sensitive operations. Local LLM inference (llama.cpp + Mistral 7B), local Whisper transcription, no cloud round-trips. Custom-deployed via Simple4u engagement only.
Discuss Sentinel →Why we structure it this way
The platform is open. The engineering is the value.
Most AI consulting firms keep their tools proprietary as a moat. We took the opposite stance: open source the platform, charge for the engineering capability that runs it. Result: clients aren't locked into our tooling — they're choosing us because the engineering is real, not because we hold their AI hostage.
When you engage Simple4u for AI Infrastructure, you get a deployment of the same code we publish on GitHub. You can fork it, audit it, run it elsewhere if our engagement ever ends. The trust comes from full visibility, not from contractual lock-in.