Open source software. Provider-based costs.
Open Voice Agent is designed for self-hosting with client-provided provider keys. Your software cost is the VPS + database; usage costs come from your selected realtime/telephony providers.
Three sources of cost.
A practical way to think about margins and client billing.
Your VPS + Postgres + Redis. Keep staging and production separate for safety.
Add a reverse proxy for TLS and reliable routing.
Realtime voice (Grok/OpenAI), telephony (Telnyx/Twilio), and optional STT/TTS vendors.
In a BYO model, the client pays providers directly.
You charge for setup, optimization, and ongoing operations (monitoring, updates, prompt/tool improvements).
Workspaces help you keep clients isolated and auditable.
BYO keys is the default.
Optimized for a multi-client deployment where each client controls their own provider spend.
Provider credentials are configured per workspace. This helps keep billing and secrets separated across clients.
Members can rotate keys without reading existing secrets (write-only rotation).
Invite-only by default. Add clients as viewer/member accounts when you want them to see analytics or rotate keys.
For deeper details, see the Security page.
Clear commercial terms.
Open Voice Agent billing is commonly operator-run. Publish support, refunds, and data processing terms alongside pricing.