Pay for the management layer. Pick how you handle provider costs.
Most customers use prepaid credits with auto-reload — set a floor, top up automatically when low, one bill, total transparency. Or bring your own provider keys if you prefer direct vendor relationships. Wax charges only for the harness above the model: failover, voice identity across providers, the visual builder, observability, audit-grade governance.
Not ready to commit? Try the demo first — no signup required.
One price per minute. Fully itemized.
Every conversation minute is broken into its components. LLM, STT, and TTS pass through at cost — 0% markup on provider charges. The flat Wax fee is the only thing Wax marks up.
| LLM | your model, at cost | $X/min |
| STT | your provider, at cost | $Y/min |
| TTS | your provider, at cost | $Z/min |
| Wax | flat fee, every minute | $0.03/min |
| Total | per conversation minute | LLM + STT + TTS + $0.03 |
Every account gets 150 conversation minutes each calendar month — every feature, every provider, no restrictions. After that, prepaid credits.
Prepaid credits
After your free allotment, usage draws from your credit balance. Minimum purchase: $1. Suggested amounts: $25 $100 $500. Opt in to auto-top-up and your balance reloads automatically when it gets low.
Minimum: $1 · No expiry · Opt-in auto-top-up · No subscription
Two ways to handle provider costs.
Choose per component — LLM, STT, and TTS can each be routed differently.
Wax holds the provider account and bills you its cost — no markup, itemized on every minute. One bill, every minute auditable. The same model OpenAI, Anthropic, and Twilio use.
Use your own provider account for any component. That provider bills you directly; Wax charges $0 on that line. Keep your vendor relationship and volume discounts — Wax still handles failover and voice identity.
What the $0.03/min covers
When your primary provider degrades or errors, Wax routes the turn to a backup mid-conversation. Your caller never hears the seam.
Your cloned voice renders consistently across ElevenLabs, Cartesia, and Deepgram. Switch providers without re-recording or sounding like a different agent.
Build and edit agents in one surface, then watch every turn — latency, cost, and routing decisions itemized per call.
Every minute is attributable to a tenant, agent, and provider. Itemized cost, signed usage events, exportable records.
Cost calculator — example scenarios at 10,000 min/month
Wax flat fee: $0.0300/min on top of provider cost. ElevenLabs list rate: $0.3000/min. Cartesia: $0.0700/min. Deepgram: $0.0600/min. 100% EL passthrough is a cost negative vs EL-direct — Wax adds the flat fee on top.
| Scenario (EL/Cartesia/Deepgram mix) | Minutes/month | Blended $/min (incl. Wax fee) | Total monthly cost | Delta vs 100% EL-direct |
|---|---|---|---|---|
| 100% EL passthrough (BYO-EL) | 10,000 | $0.3300 | $3,300.00 | +$300.00 (more expensive vs EL-direct) |
| 80/10/10 light mix | 10,000 | $0.2830 | $2,830.00 | $-170.00 (cheaper vs EL-direct) |
| 50/30/20 aggressive mix | 10,000 | $0.2130 | $2,130.00 | $-870.00 (cheaper vs EL-direct) |
Interactive calculator available when JavaScript is enabled. Rates as of 2026-05 from public provider pricing pages.