Machine Learning — entry 005 of 24
Dialogflow
Dialogflow is Google Cloud's natural-language-understanding platform for building conversational agents across chat, voice, and IVR, split into a simpler intent-based ES edition and a flow/playbook-based CX edition for larger, more complex agents. Both editions authenticate with Google Cloud OAuth2 service-account credentials rather than a flat API key, and billing follows standard GCP usage-based pricing with a free-trial credit to start. Google's newer marketing increasingly surfaces the CX side under a "Customer Experience Agent Studio" / Gemini Enterprise banner, but the Dialogflow ES/CX APIs and docs are still live and unchanged.
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<a href="https://greatapis.com/api/dialogflow/"><img src="https://greatapis.com/badge/dialogflow.svg" alt="Scored 48 on greatapis.com"></a>Auth quickstart
- Register an app / run the OAuth flow to obtain a bearer token.
- Send it as an Authorization header
Authorization: Bearer <token>
Your key is stored only in this browser (localStorage) and sent directly to the API — never to greatapis.
Developer reference
Dialogflow CX per-project quotas: 1,200 req/min text, 600 req/min audio I/O, 25 req/min Chirp3 HD voice, 600,000 tokens/min generative features; Dialogflow ES: 600 req/min text (Essentials) / 180 req/min (Trial), 300 req/min audio (Essentials) / 100 req/min + 1,000/day + 15,000/month (Trial), per docs.cloud.google.com/dialogflow/quotas