App Developer Studio

Cost to Build an AI Voice Agent

AI Voice Agent MVP - comparable to MegChem

A voice-first AI assistant for hands-free internal queries and task execution over company knowledge.

Estimated MVP Cost

$15,866

Estimated Effort

283 hours

This is a starting estimate for a custom-built MVP, designed and built from scratch. You own all the code and IP with no platform lock-in. Scope, city count, and market change the price. Get an estimate tailored to your idea with ChatStack.

What’s Included

Let employees ask questions and trigger actions by voice with low latency and reliable grounding. We ship voice-first AI agents in production, including Meg AI for MegChem.

We've shipped this for a client

Meg AI is a voice-first internal knowledge agent App Developer Studio built for MegChem: speech-to-text and text-to-speech, RAG over internal documents, and action tools for leave balances, room booking, and email drafts.

See the MegChem case study

Key Features

  • Speech-to-text and text-to-speech pipeline
  • RAG over internal documents
  • Action tools (booking, lookups, drafts)
  • Session history
  • Usage analytics

Platforms

  • Web and mobile-responsive voice UI

Who It’s For

  • Field and operations staff
  • Administrators

Out of Scope for This MVP

  • Low-latency US/EU hosting
  • Noise-tolerant STT
  • Telephony integration deferred

Full Cost Breakdown

Every line item below is a real feature from the PRD, priced in hours and USD at our AI-accelerated delivery rate. Totals are rounded to the nearest $10.

FeatureCategoryHoursCost
Voice UI, STT/TTS integration, RAG backend, and admin analytics.Voice Agent182$10,010
Delivery Overhead
Planning20$1,101
Project Management16$901
Testing9$501
DevOps7$400
Design & Frontend Build24$1,301
AI Tokens0$250
Security9$501
Risk (10% Contingency)16$901
Total283$15,866

Estimate Assumptions

  • Per-minute voice API costs at runtime excluded.

Risks That Could Change This

  • Latency and accent handling may need tuning.

User Stories

The full set of user stories behind this estimate, grouped by the person using the app.

Employee

As an employee, I want to ask questions by voice so that I can work hands-free.

Administrator

As an administrator, I want usage reports so that I can measure adoption.

Requirements

Functional and non-functional requirements the estimate above is priced against.

FR-1Voice UI

Voice conversation loop with grounded answers and tool use.

Requirements Assumptions

  • Standard secure authentication and English-only MVP.

Technical Specification

The reference architecture and stack this estimate is built on.

TS-1Voice Pipeline

Streaming STT/TTS with interruption handling.

Technical Assumptions

  • Supabase Postgres with RLS where applicable.
  • Hosted on Vercel or AWS.

Questions we get asked

AI Voice Agent App Cost FAQs

How much does an AI voice agent cost?

About $15,850 for this MVP scope.

AI Voice Agent and MegChem are registered trademarks of their respective owners. App Developer Studio is not affiliated with, endorsed by, or sponsored by AI Voice Agent and MegChem. This estimate describes the cost of building a custom, independently-owned app with a comparable feature set, not a clone, license, or use of their brand or code.

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