ThunderPhone
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Introduction
Voice AI that nails the calls others fumble, on one integrated stack from 2 cents per minute.
Listed on
August 28, 2026
What is ThunderPhone?
ThunderPhone is a voice AI platform for building and deploying AI phone agents. It offers a full-stack solution that handles inbound and outbound calls, with features like noise-robust speech recognition, multilingual support, and integration with existing telephony systems. It provides a no-code platform, API access, and enterprise options.
How to use ThunderPhone?
- To use ThunderPhone, you can start with the no-code platform: describe your agent's behavior in plain language, choose a voice and intelligence tier (Spark, Bolt, or Storm), and deploy. You can also use the API to build custom workflows by making POST requests to /v1/calls. For enterprise, white-glove solutions are available with custom deployments and BYO-LLM via ThunderSocket.
Core features of ThunderPhone
- Record-setting accuracy on Big Bench Audio (99.4%)
- Cost-effective pricing from 2¢/min
- Inbound and outbound calling with campaigns, pacing, and retries
- Multilingual support (40+ languages) with mid-call language switching
- Native SIP trunking and DTMF capture
- Knowledge grounding with built-in retrieval
- Live supervision with whisper guidance
- No-code platform, API access, and enterprise white-glove options
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