NLU that evolves with you

Start with structured, intent-based understanding and expand with LLM-powered flexibility when your use cases demand more.

Understand users on your terms

Understand users 
on your terms

Get full control over how your agents interpret messages—so you can tailor intent and entity recognition to your use case, not someone else’s defaults.

Train models with your own domain-specific data for high accuracy
Choose how LLMs participate in comprehension: first-pass understanding, fallback, or hybrid
Customize and optimize your NLU pipeline with modular components for accuracy, control, and cost efficiency
Flowchart showing a conversation where a system asks to confirm a $400 transfer to Danielle Smith, followed by a user asking for their checking account balance, leading to a Co-existence Router asking 'NLU or LLM?' branching into LLM Dialogue Understanding and NLU Classifier.

Extend NLU precision with LLM flexibility

Extend NLU precision with 

LLM flexibility

Rasa is all about optionality. Keep NLU where it is working well, and opt for language models when you need more powerful dialogue understanding.

Classify intent with structured NLU, and fall back to LLMs only when confidence is low
Use LLMs to improve conversational quality without giving up control over logic
Let Flows drive behavior, while LLMs support phrasing, repair, and natural understanding

Build on the most battle-tested NLU in conversational AI

Build on the most battle-tested  

NLU in conversational AI

Rasa has led NLU innovation for nearly a decade with the research, tools, and real-world experience to prove it.

Classify intent with structured NLU, and fall back to LLMs only when confidence is low

Spot and fix misunderstood examples without breaking what already works

Evolve your NLU stack over time—backed by proven architectures like DIET and millions of production-grade deployments

Learn about DIET

The building blocks for real-world-ready AI agents

features

The building blocks for

real-world-ready AI agents

Chat

Power structured, multi-turn conversations across every messaging channel.

Voice

Turn your agent into a real-time voice experience with enterprise-grade performance.

Agentic AI

Blend autonomy with guardrails to create AI agents that adapt while staying under control.

Multilingual AI

Expand globally with agents that switch languages, track context, and maintain brand consistency.

See what our customers are saying

customers

See what our 

customers are saying

Enterprise teams use Rasa to build and deploy high-trust AI agents that perform in production.

With Rasa, we at ERGO are completely rethinking how we build customer support experiences. It’s about developing faster and cheaper, and at scale. Rasa helps us to realize these goals.

Gregor Wiest
Head of Innovation, ERGO Group AG

Since the chatbot based on Rasa CALM can process around 50% of service desk inquiries independently, we reduced the need for human agents by approximately 30%. Thanks to the excellent backend integration capabilities of the Rasa solution, we quickly implemented the chatbot’s self-service features.

Roland Csibi
Service Hub Owner – User Support Service Hub

Our goal was to align cutting-edge AI technology with customer needs to provide seamless and innovative experiences. Partnering with Rasa allowed us to rethink how conversational AI could transform support.

Daniel Schupmann
Head of CAI/ GenAI @B2C and Digital Care Platforms/ Experience

We needed a solution that could scale with our ambitions. Rasa solves some hard problems related to conversational AI that enable us to move faster.

James Bradley
Senior Director of Data Science & Machine Learning

AI that adapts to your business, not the other way around

Build your next AI 

agent with Rasa

Power every conversation with enterprise-grade tools that keep your teams in control.