2019
Redmond, Washington
N/A
4.4 / 5.0
Google’s managed conversational AI platform. Strong fit for teams already on Google Cloud that want visual flows, Playbooks, built-in NLU, text and voice support, and native contact center integrations without owning the runtime.
2010
Palo Alto, CA
~$6M raised
4.4 / 5.0
The enterprise platform for AI agents: self-hosted, customer-owned, voice-native, with guided governance over high-risk actions.
2016
San Francisco / Berlin
~$70M raised
4.7 / 5.0
Copilot Studio
| Dialogflow CX
| RASA
|
Where the agent runs, which cloud it requires, and whether your data ever leaves it.
Copilot Studio
| Dialogflow CX
| RASA
|
Copilot Studio
| Dialogflow CX
| RASA
|
What the platform connects to, and what it pulls in with it.
Copilot Studio
| Dialogflow CX
| RASA
|
Copilot Studio
| Dialogflow CX
| RASA
|
This comparison draws on user reviews from G2, Capterra, TrustRadius, and GetApp, combined with vendor documentation, published pricing, and enterprise buyer interviews. We review product documentation, pricing pages, and feature releases directly, and cross-reference reviews for real-world deployment patterns and common friction points, with a focus on regulated industries (banking, healthcare, telco, insurance) where deployment flexibility and governance architecture are hard gates. Conflict of interest disclosure: This comparison is published on Rasa's website. Rasa is a commercial conversational AI platform and stands to benefit from enterprises choosing its platform. We address this by (1) publishing genuine competitor strengths, (2) using factual vendor documentation as primary evidence, and (3) maintaining a monthly review cadence. This page is reviewed monthly. Last comprehensive review: July 2026.
Best depends on the hyperscaler commitment and deployment requirement.
Copilot Studio is best for Microsoft 365 + Azure-committed enterprises with M365 Copilot licenses deployed.
Dialogflow is best for Google Cloud-committed enterprises with Vertex AI Search and CCAI in the stack.
Rasa is best for hyperscaler-independent enterprise deployment with self-hosted, on-premises, or air-gapped requirements and architectural governance over agent behavior.
Better depends on the existing hyperscaler stack.Copilot Studio has stronger Microsoft 365 integration, citizen-developer maker tooling, and Azure OpenAI native LLM access.Dialogflow has stronger NLU accuracy, more sophisticated visual flow building for complex multi-turn conversations, Gemini 2.5 generative playbooks, and CCAI native telephony.Microsoft-committed enterprises typically choose Copilot Studio. Google Cloud-committed enterprises typically choose Dialogflow.
Choose Rasa when:Self-hosted deployment is required (Copilot Studio is Microsoft cloud only, Dialogflow is Google Cloud only).Hyperscaler independence matters more than ecosystem integration.Architectural governance over agent behavior with per-turn auditability is needed for compliance.Predictable annual conversation-volume licensing matters more than multi-component consumption pricing.Native voice and chat orchestration from one layer is needed (both Copilot Studio and Dialogflow stitch voice across multiple cloud services).Forrester Wave Strong Performer 2026 analyst positioning satisfies the procurement signal.
No. Microsoft Copilot Studio runs on Microsoft's cloud with Azure subscription required.Google Dialogflow runs on Google Cloud with Vertex AI Search, Cloud Storage, and Google Speech services as hard dependencies.Neither offers first-class on-premises or air-gapped deployment.For regulated industries (BFSI, healthcare, government, telco) with data sovereignty mandates that cloud-only platforms cannot meet, Rasa is the alternative with self-hosted, on-premises, and air-gapped deployment as a first-class option.
Both are multi-component consumption models that scale unpredictably with conversation volume.Copilot Studio charges $200/tenant/month for 25,000 Copilot Credits plus pay-as-you-go credits at variable rates by activity type (a complex prompt with tenant graph grounding can consume ~12 credits), plus M365 Copilot license at $30/user/month for many features, plus Azure subscription consumption.Dialogflow charges per-request for generative requests, per-1,000-event for session storage (effective January 2026), per-query for Vertex AI Search, plus $5/GiB beyond the 10 GiB monthly free data store storage quota.Rasa uses annual conversation-volume licensing decoupled from per-conversation or per-token consumption.
Rasa is the only one of the three with native voice and chat orchestration from one layer.Rasa Voice ships built-in Voice Stream connectors for Twilio Media Streams, AudioCodes, Genesys Cloud, and Jambonz with pluggable ASR (Deepgram, Azure) and TTS (Cartesia, Deepgram, Azure, Rime) providers.Copilot Studio stitches Azure Speech Services + generative response + TTS + Dynamics 365 Contact Center or third-party telephony as separate services.Dialogflow stitches Speech-to-Text + playbook routing + Text-to-Speech + telephony (CCAI or third-party) similarly. Each hop adds latency.For high-volume contact center voice, native voice architectures (Rasa, Cognigy) materially outperform stitched hyperscaler voice pipelines.
Copilot Studio is technically a standalone tenant license at $200/tenant/month for 25,000 Copilot Credits.However, many production features (Microsoft Graph tenant grounding for employee-facing agents, agent capabilities in Copilot Chat, Teams, and SharePoint) are zero-rated only when the end user holds a Microsoft 365 Copilot license at $30/user/month.For external-facing agents and tenant pay-as-you-go, an M365 Copilot license is not required, but Copilot Credits consume at higher effective rates.The effective TCO depends on which users hit the agent and which features the agent uses.
At Cloud Next 2026, Google rebranded the broader stack to the Gemini Enterprise Agent Platform.The Conversational Agents console consolidates Dialogflow CX and Vertex AI Agent Builder under one authoring surface. Dialogflow CX continues to operate as the conversational agent product within that umbrella, but new investment and product capabilities live in the consolidated experience.Enterprises signing multi-year Dialogflow contracts should evaluate where their investment will land across the next two platform generations.
Yes. Both migrations follow a three-phase pattern:(1) Export existing artifacts (Copilot Studio topics, agent flows, Power Automate connectors, Dataverse data; Dialogflow intents, entities, flows, playbooks, fulfillment webhooks).(2) Map each artifact to Rasa's primitives (guided skills for deterministic flows, prompt-driven skills for open-ended turns, Action Server for connector and webhook equivalents).(3) Run both platforms in parallel on a single agent during the proof of value window before cutting over.Expect a staged 3-6 month migration for a single production agent.Enterprises typically migrate to recover ownership, eliminate hyperscaler lock-in, deploy on-premises, or consolidate AI agent TCO under predictable conversation-volume licensing.
Rasa is the strongest fit for regulated industries with self-hosted, on-premises, and air-gapped deployment as a first-class option, the patented Orchestrator for architectural governance over agent behavior, and conversation-level audit trails. Rasa does not host any customer data, systems, or applications.Copilot Studio inherits Azure compliance certifications (SOC 2, ISO 27001, HIPAA, FedRAMP) but cannot meet sovereign-cloud or air-gapped mandates that prohibit Microsoft cloud delivery.Dialogflow inherits Google Cloud certifications, but cannot meet mandates that prohibit Google Cloud delivery.
Dialogflow has the strongest out-of-the-box NLU accuracy among the three, drawing on Google's natural language research and Gemini 2.5 integration.Copilot Studio uses Azure OpenAI models for generative answers with topic-based flows for structured conversations.Rasa's NLU pipeline is pluggable: teams can use Rasa's open-source NLU components or integrate any LLM (OpenAI, Anthropic, Google, custom) for intent recognition and response generation.The right NLU choice depends on whether out-of-the-box accuracy or pluggability matters more.
Rasa has the strongest native multi-channel architecture with voice and chat sharing the same orchestration layer, conversation state, and skill library. Voice Stream connectors for Twilio Media Streams, AudioCodes, Genesys Cloud, and Jambonz from the same platform that handles chat.Copilot Studio is strongest inside the Microsoft 365 estate (Teams, SharePoint, Copilot Chat) with external channels via Power Platform connectors.Dialogflow supports web, mobile, telephony (CCAI), and major messaging channels with channel-specific configuration.
Rasa offers a free Developer Edition with full platform access for up to 1,000 external conversations per month (100 for internal agents).Dialogflow offers a pay-as-you-go free tier for text requests within usage limits, plus $600 credit for Flows and $1,000 for Playbooks for new users, valid 12 months.Copilot Studio does not offer a comparable free tier; entry-level access starts with the $200/tenant/month plan plus Copilot Credits consumption.
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