Voice AI Development

Voice AI development for real-time assistants

ZeroTwo Solutions builds real-time voice AI assistants that talk, listen and take action. We put voice engines like Gemini Live and ElevenLabs behind one provider-independent interface, run a turn's tool calls concurrently to keep replies fast, and meter usage with spend caps and prepaid credits.

Technical roadmap within 48 hours · NDA on request · You own 100% of the IP

Outcomes

What you get

The results this engagement is built to leave you with in production.

  • Low-latency spoken replies with live on-screen transcript
  • Provider-independent voice layer so you can switch engines
  • Dozens of tools callable mid-conversation, executed concurrently
  • Usage metering, weekly and monthly spend caps and prepaid credits
Deliverables

What we deliver

  • Realtime transport

    WebSocket audio streaming on Django Channels with session state and reconnection.

  • Voice engines

    Gemini Live native audio and ElevenLabs behind one interface, selectable per user or plan.

  • Tooling

    Domain tools executed concurrently with asyncio so the assistant answers while it works.

  • Production hardening

    JWT, MFA, rate limiting, Docker deployment and a large automated test suite.

Tech stack

  • Gemini Live API
  • ElevenLabs
  • Django Channels
  • asyncio
  • Celery
  • PostgreSQL
  • Redis
  • Docker
  • Pytest
Proof

Related case studies

Production systems where we delivered this service. Client names are withheld under NDA.

View all case studies
  • FinTech · Voice AI

    Real-time voice AI assistant with 56 tools

    A browser-based voice assistant with a live transcript, two voice engines behind one interface and metered usage billing, covered by 1,500+ automated tests.

    voice-callable tools
    56
    automated tests
    1,500+
    • Python
    • Django Channels
    • Celery
    • PostgreSQL
    • Redis
    • Gemini Live
    Read the case study: Real-time voice AI assistant with 56 tools
Process

How the engagement runs

See our full delivery process
  1. 01

    Discovery call

    30 min
  2. 02

    Technical roadmap

    48 hours
  3. 03

    Pilot sprint

    1–2 weeks
  4. 04

    Build & ship

    Weekly demos
  5. 05

    Run & scale

    Ongoing
FAQ

Voice AI Development FAQ

Which voice AI engines do you work with?

We have shipped Gemini Live native audio and ElevenLabs in production behind a single interface, and integrate OpenAI realtime models where they fit. The transport layer stays independent of the provider.

How do you control voice AI costs?

Every session is metered. Users get weekly and monthly spend caps and prepaid credits, and the system enforces limits server-side before a model call is made.

Related services

Other ways we can help

Start a project

Ready to give your product a voice?

Tell us what you want to ship. You will get a technical roadmap and a fixed-scope proposal within 48 hours.

  • Reply within 1 business day
  • NDA on request
  • You own 100% of the IP