Speech & conversational AI · AWS vs Google Cloud
Amazon Lex V2 vs Dialogflow CX (Conversational Agents)
Amazon Lex maps to Dialogflow CX (Conversational Agents), with deterministic flows, LLM-driven playbooks, and telephony integration.
Side-by-side comparison
| Aspect | Amazon Web Services | Google Cloud |
|---|---|---|
| Service | Amazon Lex V2 | Dialogflow CX (Conversational Agents) |
| Lifecycle | Generally available | Generally available |
| What it is | Voice and text chatbots with NLU and ASR, LLM-assisted NLU, conditional branching, Lambda fulfillment, and Amazon Connect integration. | Builder for chat and voice virtual agents with flows, playbooks (LLM-driven), and telephony integration. |
| Pricing model | Per speech or text request (streaming conversations priced per interval). | Billed per request for chat agents and per second of audio for voice agents. |
| Docs | Amazon Lex V2 docs | Dialogflow CX (Conversational Agents) docs |
| Pricing page | Amazon Lex V2 pricing | Dialogflow CX (Conversational Agents) pricing |
Key differences
- Dialogflow CX models conversations as flows and pages, plus generative playbooks; Lex uses intents and slots.
Pricing summary
Pricing models only. No prices are quoted because they change by region and over time.
- AWS
- Per speech or text request (streaming conversations priced per interval). Amazon Lex V2 pricing →
- GCP
- Billed per request for chat agents and per second of audio for voice agents. Dialogflow CX (Conversational Agents) pricing →
And on Azure?
Partial match Azure's equivalent is Microsoft Copilot Studio, Azure AI Bot Service, Conversational language understanding (CLU). AWS vs Azure comparison →
FAQ
What is the Google Cloud equivalent of Amazon Lex V2?
Amazon Lex maps to Dialogflow CX (Conversational Agents), with deterministic flows, LLM-driven playbooks, and telephony integration.
How does pricing compare between Amazon Lex V2 and Dialogflow CX (Conversational Agents)?
AWS: Per speech or text request (streaming conversations priced per interval). Google Cloud: Billed per request for chat agents and per second of audio for voice agents. Check the official pricing pages for current rates.
What is the Azure equivalent?
Microsoft Copilot Studio, Azure AI Bot Service and Conversational language understanding (CLU) (partial match). Amazon Lex maps to Microsoft Copilot Studio (low-code agents) together with Azure AI Bot Service (channels).