Deparley is online instruction for negotiation using practial scenarios. Emphasis is on learning by doing. Deparley is frictionless service to perform various sales calls and negotiation scenarios. Artificial intelligence is seeing growth in services that use human voice for interaction. Deparley is harnessing the best of those services.

Service is forked from Vercel's Swift – AI Voice Assistant

Service relies on a number of AI APIs:

• Swift for fast AI voice assistance.
• Groq is used for fast inference of OpenAI Whisper (for transcription) and Meta Llama 3 (for generating the text response).
• Cartesia's Sonic voice model is used for fast speech synthesis, which is streamed to the frontend.
• VAD is used to detect when the user is talking, and run callbacks on speech segments.
• Deepgram is used for modeling pauses and filler words in transcription.

The app is a Next.js project written in TypeScript and deployed to Vercel. The site also uses Supabase for the Postgresql database.