The leading nonprofit for AI in public services

We build the open-source technology that lets public services around the world deploy AI agents to better support their citizens.

12+ yearsbuilding public-interest AI
8 countriesdeploy the Bayes Platform
20M+ peoplesupported through our technology
We believe in a world where

Everyone who needs help can receive it.

Gates Foundation
Google.org
Fast Forward
Raise Sherpas
L'Assurance Maladie
France Travail
Hôtel-Dieu (AP-HP)
BOpEx (AP-HP)
AP-HP
La France s'engage
California Department of Justice
US Dept of Veterans Affairs
Y Combinator
Gates Foundation
Google.org
Fast Forward
Raise Sherpas
L'Assurance Maladie
France Travail
Hôtel-Dieu (AP-HP)
BOpEx (AP-HP)
AP-HP
La France s'engage
California Department of Justice
US Dept of Veterans Affairs
Y Combinator
Our technology

The operating system of the agentic government

From employment to health to administrative procedures, the Bayes Platform lets public services deploy AI agents in the service of their citizens.

1Safe

It follows your protocols rather than the model's defaults.

2Effective

It is measured in production, on field results.

3Sovereign

It runs on your infrastructure, with your data, in open source.

Our mission

AI to empower people in need and those who help them

We believe AI can bring everyone personalised help, at scale. That's why we build it open-source and as a nonprofit, so the most advanced technology goes to the most pressing needs.

Introducing the Bayes Platform

The first open-source AI agent platform built for public services. Here is what it does, in the real product.

Open the platform tour
Bayes Platform
Hover a card to learn more.
01
Model-agnostic
Model-agnostic

The agent is tied to no model and no supplier. Changing either means retesting and recalibrating the harness, with no business logic to rewrite, and open models remain an option when the case calls for one.

02
Infrastructure you control
Infrastructure you control

Managed cloud or your own infrastructure, from a single Docker image. The retention period is yours, and your data never trains a third-party model. GDPR, AI Act, SOC 2 Type II, ISO 27001 and HDS compliance.

03
An open-source commons
An open-source commons

The code is MIT-licensed: you deploy it, change it, and keep it if Bayes disappears. What one institution funds benefits the next, with no licence to buy.

04
Your sources, your protocols
Your sources, your protocols

The agent answers from your handbooks, protocols and official references, never from the open web. Every answer cites the document and the extract it used, and the platform enforces your rules when the model skips them.

06
Governed by your teams
Governed by your teams

Your frontline teams create and tune their own agents, with no code. Every change writes a draft, and nothing reaches the public that a human has not published.

07
Tested before it goes live
Tested before it goes live

Evaluation campaigns replay conversation and extraction datasets against a chosen version. Reviewers rate the answers blind, an LLM judge gives the scale, and two runs compare side by side.

08
Continuous improvement
Continuous improvement

Every exchange is filed under the life situations you defined, and the topics your answers cover badly surface on their own. You complete the corpus, re-evaluate and publish: the agent improves with every version.

09
Plugged into your tools
Plugged into your tools

Each agent is exposed over API and MCP, an open standard: the assistant or portal your institution already runs calls it as a tool. A widget or a public page when that is simpler. Nobody changes screen.