Open Source Platform & SDK

Gen AI Testing. Collaborative. Adaptive.

Like a platypus, versatile and very effective. We bring different worlds together. Everyone's expertise becomes the testing your Gen AI needs.

Associated with
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Dive Into Testing

Fast, thorough, and surprisingly painless.

Platform

Get Your Whole Team Involved

Your legal, marketing, and domain experts know what can actually go wrong. Make testing everyone's responsibility with sophisticated tools that automatically generate comprehensive test scenarios.

SDK

Test Without Leaving Your IDE

Integrate Rhesis directly into your development workflow. Generate, execute, and analyze tests without leaving your favorite IDE. No jumping between tabs. Just testing that fits how you actually work.

END-TO-END Solution

Full testing cycle coverage

From 'I hope this works' to 'I know this works.' Everything you need to develop and ship with confidence instead of crossed fingers.

Automated scenario creation at scale

Domain-specific testing intelligence

Real-world simulation engine

Clear insights, actionable results

Works with your existing stack

Reliable by design. Fun by Nature.

From 'It works on my machine' to production-ready

You spent weeks and months building something cool. Don't let sloppy testing ruin the release. Your Gen AI deserves testing that's as thoughtful as your architecture.

Advanced testing architecture, collaborative by design.
Built for teams, proven in production.
END-TO-END Solution

How it works

Great AI teams know what they're shipping before users do. Let's turn testing from "crossing fingers" into something as sophisticated as your development process.

Connect application

Our API and SDK work with any Gen AI system, from simple chatbots to complex multi-agent architectures.

Generate tests

Your team defines what matters: legal requirements, business rules, edge cases. We automatically generate thousands of test scenarios based on their expertise.

Define metrics

Set quality benchmarks that actually matter to your team. Track performance, safety, compliance, and user experience with clear analytics.

Improve quality

Receive detailed analysis that help you understand exactly how your Gen AI performs before your users do.

Platypus Pond

Frequently asked questions

Everything you need to know about Rhesis AI, served with a smile.

What's with the platypus?
What makes Rhesis different from other AI testing tools?
Is this really enterprise-ready if it's open source?
What can I actually do with it?
Is there a cloud version?
Blog post image

Ensuring Trustworthy AI: Why Quality Assurance Matters

Artificial Intelligence (AI) is transforming numerous sectors, profoundly impacting task performance and decision-making processes. However, as AI's prevalence increases, so does the need for trustworthiness, i.e., ensuring that AI applications operate as intended and meet required quality standards.
Dr. Nicolai Bohn
September 30, 2025
8 mins
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Gen AI Chatbots in the Insurance Industry: Are they Trustworthy?

As Gen AI technology, particularly Large Language Models (LLMs), continues to shape industries across sectors, it is crucial to understand how these applications perform in real-world scenarios and assess their overall quality and trustworthiness.
Dr. Nicolai Bohn
September 30, 2025
7 mins
Blog post image

Lessons from 10+ AI Conferences on Gen AI Application Development

Over the past months, I attended more than 10 AI conferences, including PAKcon, the AIAI Summit, the AI & Data Summit, the Trustworthy AI Forum, and AICon.
Dr. Nicolai Bohn
September 28, 2025
5 mins