Popular AppsCost to Build an AI Voice Agent
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.
Explore the full PRD used to build this estimate
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.
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 an AI-accelerated delivery rate. Totals are rounded to the nearest $10.
| Feature | Category | Hours | Cost |
|---|---|---|---|
| Voice UI, STT/TTS integration, RAG backend, and admin analytics. | Voice Agent | 182 | $10,010 |
| Delivery overhead | |||
| Planning | 20 | $1,101 | |
| Project Management | 16 | $901 | |
| Testing | 9 | $501 | |
| DevOps | 7 | $400 | |
| Design & Frontend Build | 24 | $1,301 | |
| AI Tokens | 0 | $250 | |
| Security | 9 | $501 | |
| Risk (10% Contingency) | 16 | $901 | |
| Total | 283 | $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.
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.
Streaming STT/TTS with interruption handling.
Technical assumptions
- Supabase Postgres with RLS where applicable.
- Hosted on Vercel or AWS.
AI Voice Agent cost FAQs
- How much does an AI voice agent cost?
- About $15,850 for this MVP scope.
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