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View detailsRasa
Open-source conversational AI framework for building contextual assistants.
Rasa is an open-source conversational AI framework for building contextual assistants. Unlike simple FAQ bots, Rasa tracks the full conversation context, so it can handle corrections, topic changes, and multi-step tasks the way a human agent would. Developers train it on their own data and run it on their own infrastructure.
Key Features
- Open-source framework for contextual assistants
- CALM dialogue management with LLMs
- Runs on your own infrastructure or cloud
- Rasa Studio for visual conversation design
- Analytics and observability in Rasa Pro
- Multilingual support for global deployments
Pricing
| Plan | Price | Details |
|---|---|---|
| Developer Edition | $0 | CALM framework, up to 1,000 external conversations a month and 100 internal. |
| Growth | From ~$35,000/yr | Production support and advanced features for growing teams. |
| Enterprise | Custom | Custom deployment, SLAs, and dedicated support. |
Prices as listed in 2026 research. Always check the official site for the latest price — plans change. Free plan: Yes — it has a free plan.
Best for: developers who want full control over a contextual, open-source assistant.
Popular with: Developers, Business Owners
Popular with: Developers, Business Owners
How it works
The framework uses CALM, a dialogue approach that lets large language models reason about what to do next instead of following rigid decision trees. Rasa Pro adds analytics, observability, and enterprise features, and Rasa Studio gives business teams a visual way to review and shape conversations.
A free Developer Edition covers up to 1,000 external conversations a month, while paid plans are enterprise-priced from around $35,000 a year. Rasa suits teams that need data privacy, on-premises deployment, and complete control over their assistant.
Pros and Cons
✓ Pros
- Fully open source with no vendor lock-in
- True contextual dialogue, not just keyword matching
- Can be self-hosted for data privacy
- Free Developer Edition for real projects
✗ Cons
- Paid Growth plan starts around $35,000 a year
- Needs developer skills to build and maintain
- Smaller community than the big cloud bot platforms
Frequently Asked Questions
Is Rasa free?
Yes — Rasa has a free plan. Free Developer Edition; paid plans from ~$35,000/yr
What is Rasa best for?
developers who want full control over a contextual, open-source assistant.
What kind of tool is Rasa?
Rasa is a AI Chatbots tool on VerlumoAI.
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View detailsLast reviewed: November 2026