Announcing ThunderPhone v2

Today, I’m excited to announce the public launch of our ThunderPhone v2 self-serve platform.

Anyone can now use ThunderPhone off the shelf to automate a wide variety of phone calls.

How we got here

Since last year, we’ve been working with a small group of enterprise customers to automate their phone calls. In some cases, these calls have been in performance-sensitive use cases, like pre-sales and data entry, where we found that existing AI voice platforms made so many mistakes that too many callers would get frustrated and hang up, ruining the unit economics of the use case.

To solve those problems, we ended up building a custom stack from scratch to make fewer mistakes on calls and make difficult use cases possible. After automating thousands of production calls this year, we’re now making our stack available to the public as the ThunderPhone v2 self-serve platform.

Three tiers, starting at 2c/min

Our system starts at just 2c/min for the Spark tier, models included, making it the lowest-priced full-stack voice AI platform on the market. For more speed, we also offer Bolt from 5c/min. For the highest possible intelligence, we offer Storm from 9c/min.

Storm can handle even the most complex call flows with high reliability, with no need for hand-built “flow builder” setups - one prompt is enough!

With its extra-intelligence option enabled (+3c/min), Storm scores 99.4% on Big Bench Audio, ahead of every model on the Artificial Analysis leaderboard to date. Our eval set and transcripts are public on Hugging Face, and we'll be sharing more benchmark results soon. If you want to minimize mistakes on your production calls, Storm is your best bet.

The integrated architecture

ThunderPhone can be both smarter and cheaper than other stacks because of our unique integrated architecture. Instead of a “3-step pipeline” combining one transcription model, one LLM, and one text-to-speech model, we run a more complex web where multiple transcription models, multiple LLMs, etc. all interact in carefully orchestrated ways to achieve the best possible performance, at the lowest possible cost.

Among other benefits, this makes our agents exceptional at hearing callers correctly, even in noisy environments or through heavy accents. This leads calls to go more smoothly, with more reliable data entry for names, addresses, and more. ThunderPhone agents typically get even tricky spellings in a single conversation turn, where other systems need several tries. And every "sorry, could you spell that one more time?" is another chance for the caller to hang up!

Our system also includes numerous components to deal with the difficulties of real-life calls, including background noise, poor signal quality, interruptions, and more. We’ve tuned the conversation-handling machinery on thousands of hours of real-world data, and it provides a significant boost to the experience of real callers.

A complete platform

ThunderPhone also features a comprehensive platform that makes it exceptionally easy to build, test, deploy, and monitor voice agents. Without ever leaving ThunderPhone, you can:

• Configure inbound and outbound calls, and manage phone numbers
• Run human and AI testing of phone agents
• Monitor calls live, as they happen
• Let the system detect recurring problems in your production calls, propose fixes, and review and apply them
• See how your calls are performing, and where they need work, with funnel reports

The ThunderPhone platform also makes it effortless to wire up telephony and software integrations. A setup wizard connects your existing Twilio or Telnyx account, or any standard SIP trunk, with a few details from your provider, and native connectors cover Google Sheets, Google Calendar, HubSpot, Salesforce, and Cal.com. And for all other integrations, a wizard allows for “just paste-and-click” connections to any API.

An always-on copilot is integrated into the web app to make it trivially easy to figure out how to use the ThunderPhone platform. It can even navigate the app and take actions for you - and since we’re a voice AI company, it can of course talk to you instead of making you type!

APIs, enterprise, and compliance

For use cases requiring more customization than the web platform offers, ThunderPhone also has a full-featured API to make a variety of custom integrations possible. And for even deeper platform customization, custom cost and latency requirements, compliance needs, etc., we offer bespoke enterprise implementations and support. (Contact me directly with inquiries - alex@thunderphone.com)

ThunderPhone is HIPAA and GDPR compliant for healthcare and EU/UK applications out of the box, and we sign BAAs and DPAs at no extra charge.

Try it today

For more information, have a look around our website, which goes deeper into our technology, pricing, platform features, and more.

Better yet, give ThunderPhone a try and see how it does for your use case! It should take you just a few minutes to get started, and our web app and copilot are designed to make it as easy as possible to set up whatever you need.

If you run into any issues or have any requests, reach out to me personally at alex@thunderphone.com

Alex Kolchinski, CEO