Twilio Voice and AI power innovative Guinness Price Index

Guinness Price Index creator to discuss the future of Voice AI and programmable communications at SIGNAL Berlin

(IN BRIEF) Twilio announced that Matt Cortland, AI engineer and creator of the Guinness Price Index, known as “Guinndex,” will speak at SIGNAL Berlin about how Twilio Programmable Voice and its integration with ElevenLabs helped power the project. Originally designed to track the changing price of a pint of Guinness, Guinndex evolved into a real-world example of how Voice AI and communications APIs can be used to conduct large-scale research efficiently. By placing natural, real-time calls to pubs and venues, the project verified 6,554 Guinness prices, demonstrating how AI-powered voice technology can support transparent pricing, data collection, and practical customer engagement use cases. Twilio highlighted the project as evidence that developers are moving beyond AI experimentation toward useful applications that combine programmable voice, conversational AI, and communications infrastructure. Cortland and Twilio executives will discuss these themes at SIGNAL Berlin, where the company will also showcase its broader vision for AI-driven customer engagement and programmable communications.

(PRESS RELEASE) BERLIN, 16-Jun-2026 — /EuropaWire/ — Twilio (NYSE: TWLO), the infrastructure for customer engagement in the AI era, announces AI Engineer and Creator of Guinndex Matt Cortland as a guest speaker at SIGNAL Berlin. Cortland will share how he used the Twilio Programmable Voice and its native integration with ElevenLabs to help power The “Guinndex”, aka Guinness Price Index. He will also discuss the future of Voice AI and what developers can build when communications infrastructure and AI converge.

Originally created to track the changing price of a pint of Guinness, the project has since become an example of how developers are implementing Voice AI and communications APIs to build real-world research tools at scale.

By combining Twilio Programmable Voice with voice AI tech from ElevenLabs, the project gathered up-to-date prices straight from pubs and venues using natural, real-time calls. It’s a powerful example of how Twilio’s Voice AI can make large-scale research and customer engagement both simple and effective.

Matt Cortland, AI Engineer and Creator of Guinndex

“What started as a project about the price of a pint became a real-world test of where Voice AI is heading,” said Matt Cortland, AI Engineer and Creator of Guinndex. “Using Twilio’s Programmable Voice infrastructure alongside conversational AI technology, we were able to scale one single idea to an entire country-wide index. What’s exciting is that this points to a much bigger shift. AI agents are moving beyond chatbots and into real-world interactions. Platforms like Twilio will play a critical role in enabling those experiences at scale.”

This project is a fantastic example of how innovative technology can make life easier for everyone. By placing thousands of calls, Matt Cortland was able to verify 6,554 Guinness prices. That’s real social value delivered efficiently and affordably with Voice AI. It shows how the right technology can put transparent pricing within everyone’s reach.

“Developers are moving beyond mere experimentation with AI; they are now building practical, real-world applications that deliver tangible value,” said Peter Bell, Vice President of Marketing EMEA at Twilio. “Guinndex is a compelling example of the Twilio platform in action. By seamlessly combining programmable voice, conversational AI, and communications APIs, we provide developers with the essential toolkit to forge experiences that are both highly innovative and feel deeply human”.

Twilio’s SIGNAL conference series brings together developers, builders, and business leaders to explore the future of customer engagement, AI, communications, and digital experiences.

About SIGNAL Berlin

We’re bringing the magic of our SIGNAL World Tour to the historic CLINKER at BACKFABRIK in Berlin for a day of innovation and executive networking on Thursday June 11. Regional business leaders will showcase how Twilio serves as the foundation for customer relationships that last and provide an exclusive look at our roadmap. For more information about SIGNAL Berlin visit: https://signal.twilio.com/berlin26

About Twilio

Twilio (NYSE: TWLO) is the infrastructure for customer engagement in the AI era. By combining global communications, memory, and AI orchestration with identity, governance, and observability, Twilio enables businesses to deliver continuous, contextual, personal, and secure conversations across every channel and participant—human or AI.

Across 180+ countries, hundreds of thousands of the most innovative companies—from the Fortune 500 to startups—and millions of developers, rely on Twilio’s global platform across messaging, voice, email, and beyond, to power trusted customer experiences that drive real results. For more information about Twilio visit www.twilio.com

FAQs

What is the Guinness Price Index?
The Guinness Price Index, also known as Guinndex, is a project created to track the changing price of a pint of Guinness by collecting price information directly from pubs and venues.

Who created Guinndex?
Guinndex was created by Matt Cortland, an AI engineer who developed the project as a real-world use case for Voice AI and programmable communications.

How did Twilio support the Guinndex project?
Twilio supported the project through Twilio Programmable Voice, which was used together with voice AI technology from ElevenLabs to place natural, real-time calls and gather Guinness price data from pubs and venues.

What role did ElevenLabs play in the project?
ElevenLabs provided conversational voice AI technology that worked alongside Twilio Programmable Voice, enabling the project to conduct natural-sounding calls for data collection.

How many Guinness prices were verified through the project?
The project verified 6,554 Guinness prices by placing thousands of AI-powered voice calls to pubs and venues.

Why is Guinndex considered a practical example of Voice AI?
Guinndex shows how Voice AI can move beyond chatbot-style interactions and support real-world tasks such as large-scale research, price tracking, customer engagement, and data collection.

What will Matt Cortland discuss at SIGNAL Berlin?
Matt Cortland will discuss how he used Twilio Programmable Voice and ElevenLabs technology to build Guinndex, as well as the broader future of Voice AI and programmable communications.

What is SIGNAL Berlin?
SIGNAL Berlin is part of Twilio’s SIGNAL conference series, bringing together developers, business leaders, and technology professionals to explore AI, communications, customer engagement, and digital experiences.

Why does Twilio highlight Guinndex as an important use case?
Twilio presents Guinndex as an example of developers building practical AI applications that combine programmable voice, conversational AI, and communications APIs to deliver real-world value.

What broader trend does the project reflect?
The project reflects the growing shift of AI agents from text-based chatbots into real-world voice interactions, where they can help businesses and developers automate communication, research, and customer engagement at scale.

SOURCE: Twilio