Telli, a YC Alum, Secures Pre-Seed Funding for AI Voice Agents
April 16, 2025
BillyMartinez
37
If you've ever been frustrated by the long wait times when trying to book an appointment, the Berlin-based startup telli might just be the solution you've been looking for. Founded by Seb Hapte-Selassie, Philipp Baumanns, and Finn zur Mühlen, telli has developed AI voice agents that step in to manage high volumes of customer interactions, seamlessly integrating into company operations. This innovative approach has recently led to a successful pre-seed funding round, raising $3.6 million, spearheaded by Berlin's Cherry Ventures and Y Combinator.
Telli's AI voice agents are designed to handle a range of tasks, from automated callbacks to closing deals. This technology aims to alleviate the bottleneck that often occurs when a surge of customers tries to reach out, allowing human operators to focus on more complex issues. The voices of these AI agents are crafted by professional voice actors and then cloned using advanced platforms like ElevenLabs or Cartesian AI, ensuring a natural and engaging customer experience.
Impressive Growth and Expansion
Since its inception, telli has experienced remarkable growth, boasting a revenue increase of over 50% month over month. Operating out of Berlin with just a six-person team, the startup has managed to process nearly a million phone calls. Their customer base spans across Germany, the U.K., Latin America, and the U.S., with ambitions to expand further.
Origins and Inspiration
The idea for telli was born out of the founders' experiences at Enpal, a leading German startup. CEO Finn zur Mühlen shared with TechCrunch, "We scaled the customer service people, and we saw first-hand how difficult call automation for customer acquisition is and how challenging it is to manage performance." This insight led them to create AI agents capable of achieving tangible outcomes such as booking appointments, prequalifying leads, and making product suggestions.
Technology and Flexibility
Telli leverages a variety of AI models, including those from Open AI and Claude, to ensure they provide the most effective solutions to their clients. Zur Mühlen explained, "We switch around. Our goal is always to give our customers the best solutions that are out there right now." This adaptability is key to telli's success in meeting the diverse needs of their global clientele.

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Comments (15)
0/200
HarryWilliams
April 17, 2025 at 2:40:51 PM GMT
Telli's AI voice agents are a lifesaver! No more waiting on hold to book appointments. It's super efficient and the voice sounds so human-like, it's almost eerie. Just wish it was a bit cheaper! 💸📞
0
NicholasAdams
April 18, 2025 at 7:43:48 PM GMT
TelliのAI音声エージェントは命の恩人だね!予約をするために待たされることがなくなった。超効率的で、音声がとても人間っぽいから、ちょっと不気味なくらい。もう少し安ければいいのに!💸📞
0
JamesMiller
April 18, 2025 at 9:30:35 AM GMT
Os agentes de voz de IA da Telli são um salva-vidas! Nada mais de ficar esperando na linha para marcar consultas. É super eficiente e a voz soa tão humana que é quase arrepiante. Só queria que fosse um pouco mais barato! 💸📞
0
MatthewScott
April 16, 2025 at 11:34:54 AM GMT
¡Los agentes de voz de IA de Telli son un salvavidas! Nada más de esperar en espera para reservar citas. Es super eficiente y la voz suena tan humana que es casi espeluznante. ¡Ojalá fuera un poco más barato! 💸📞
0
BrianAdams
April 19, 2025 at 3:07:18 PM GMT
Các đại lý giọng nói AI của Telli thực sự là cứu cánh! Không còn phải chờ đợi để đặt lịch hẹn nữa. Siêu hiệu quả và giọng nói nghe rất giống con người, đến mức hơi rùng rợn. Chỉ mong nó rẻ hơn một chút! 💸📞
0
FrankAllen
April 19, 2025 at 6:05:09 AM GMT
Telli's AI voice agents are a lifesaver! No more waiting on hold to book appointments. It's like having a personal assistant who handles everything. The only hiccup is sometimes it misinterprets my requests, but it's still a solid solution. Give it a try! 😊
0






If you've ever been frustrated by the long wait times when trying to book an appointment, the Berlin-based startup telli might just be the solution you've been looking for. Founded by Seb Hapte-Selassie, Philipp Baumanns, and Finn zur Mühlen, telli has developed AI voice agents that step in to manage high volumes of customer interactions, seamlessly integrating into company operations. This innovative approach has recently led to a successful pre-seed funding round, raising $3.6 million, spearheaded by Berlin's Cherry Ventures and Y Combinator.
Telli's AI voice agents are designed to handle a range of tasks, from automated callbacks to closing deals. This technology aims to alleviate the bottleneck that often occurs when a surge of customers tries to reach out, allowing human operators to focus on more complex issues. The voices of these AI agents are crafted by professional voice actors and then cloned using advanced platforms like ElevenLabs or Cartesian AI, ensuring a natural and engaging customer experience.
Impressive Growth and Expansion
Since its inception, telli has experienced remarkable growth, boasting a revenue increase of over 50% month over month. Operating out of Berlin with just a six-person team, the startup has managed to process nearly a million phone calls. Their customer base spans across Germany, the U.K., Latin America, and the U.S., with ambitions to expand further.
Origins and Inspiration
The idea for telli was born out of the founders' experiences at Enpal, a leading German startup. CEO Finn zur Mühlen shared with TechCrunch, "We scaled the customer service people, and we saw first-hand how difficult call automation for customer acquisition is and how challenging it is to manage performance." This insight led them to create AI agents capable of achieving tangible outcomes such as booking appointments, prequalifying leads, and making product suggestions.
Technology and Flexibility
Telli leverages a variety of AI models, including those from Open AI and Claude, to ensure they provide the most effective solutions to their clients. Zur Mühlen explained, "We switch around. Our goal is always to give our customers the best solutions that are out there right now." This adaptability is key to telli's success in meeting the diverse needs of their global clientele.



Telli's AI voice agents are a lifesaver! No more waiting on hold to book appointments. It's super efficient and the voice sounds so human-like, it's almost eerie. Just wish it was a bit cheaper! 💸📞




TelliのAI音声エージェントは命の恩人だね!予約をするために待たされることがなくなった。超効率的で、音声がとても人間っぽいから、ちょっと不気味なくらい。もう少し安ければいいのに!💸📞




Os agentes de voz de IA da Telli são um salva-vidas! Nada mais de ficar esperando na linha para marcar consultas. É super eficiente e a voz soa tão humana que é quase arrepiante. Só queria que fosse um pouco mais barato! 💸📞




¡Los agentes de voz de IA de Telli son un salvavidas! Nada más de esperar en espera para reservar citas. Es super eficiente y la voz suena tan humana que es casi espeluznante. ¡Ojalá fuera un poco más barato! 💸📞




Các đại lý giọng nói AI của Telli thực sự là cứu cánh! Không còn phải chờ đợi để đặt lịch hẹn nữa. Siêu hiệu quả và giọng nói nghe rất giống con người, đến mức hơi rùng rợn. Chỉ mong nó rẻ hơn một chút! 💸📞




Telli's AI voice agents are a lifesaver! No more waiting on hold to book appointments. It's like having a personal assistant who handles everything. The only hiccup is sometimes it misinterprets my requests, but it's still a solid solution. Give it a try! 😊



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