R

CALM

Platform

by Rasa

Rasa's dialogue engine (Conversational AI with Language Models): an LLM interprets what the user wants while versioned, deterministic flows decide what the agent does, with built-in repair when users change topic or backtrack.

Find alternatives to CALM

What it does

• Agent orchestration

Features 3

• Dialogue understandingUses LLMs to understand what the user wants, separating language understanding from decision-making.
• Structured FlowsEvery action runs through structured, versioned Flows that define what the agent does and when.
• Conversation repairBuilt-in Flows and rules let the agent re-ask, clarify or guide users back on track without custom code.

Sources

Pricing

Official documentation · 11 Oct 2026

"The Rasa Developer Edition is free and gives you access to Rasa with CALM." Pricing page: Developer Edition free for one bot per company, up to 1,000 external or 100 internal conversations a month; Enterprise via Contact sales.

Description

Official documentation · 11 Oct 2026

"CALM extends the flexibility of LLMs with the reliability of deterministic logic. The LLM interprets what the user wants. The logic decides what happens next."; "Conversation repair: If a user changes topics or backtracks, CALM picks up the thread."

What it does

Official documentation · 11 Oct 2026

CALM "is the dialogue system that runs Rasa text and voice assistants. It interprets user input, manages dialogue, and keeps interactions on track."

Sold within

Official documentation · 11 Oct 2026

"The Rasa Developer Edition is free and gives you access to Rasa with CALM."; the docs call CALM the dialogue system that runs Rasa assistants.

Name

Official documentation · 11 Oct 2026

Docs: "Conversational AI with Language Models (CALM) is an LLM-native approach to building reliable conversational AI."

URL

Official documentation · 11 Oct 2026

Product page "Rasa CALM", in the rasa.com Product menu as CALM.

Deployment

Official documentation · 11 Oct 2026

"On-premise by default, so your security review covers infrastructure you already run."

Interfaces

Official documentation · 14 Oct 2026

Page: 'Create a new template CALM assistant from a template: rasa init --template tutorial'.

Modalities

Official documentation · 12 Oct 2026

Page: 'Voice Stream Channel Connectors in Rasa process both input and output in audio. They transcribe incoming audio into text, process it within Rasa, and then convert the response back into audio'.

Intended for

Official documentation · 11 Oct 2026

For teams building high-trust conversational assistants.

Also from Rasa

• Rasa Platform Agent platform

  Platform for product and engineering teams to build, test, deploy and govern their own customer-facing AI agents across voice and text channels, with a free developer edition.

• Mantle Platform

  Orchestrator at the core of the Rasa Platform that runs agents written as natural-language skills: it picks the active skill, hands off between skills, calls tools, keeps memory, and enforces guarantees such as required values or exact wording, on chat and voice alike.

• Rasa Studio Application

  Self-hosted no-code workspace where non-developers visually build Rasa assistant flows, manage response content and test changes, exporting the assistant as code for the development team.

• Rasa Voice Agent platform

  Rasa Voice provides infrastructure for real-time voice agents with turn-taking, interruptions, and rephrasing.

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