telli Raises $15M to Scale AI Customer Ops

The big picture: Berlin-based telli has secured a $15 million seed round, bringing its total funding to $18.5 million. The company builds AI agents that handle voice, WhatsApp, chat, and email conversations for B2C companies. telli aims to integrate AI into customer operations, focusing on a hybrid approach where AI supports human agents.

Why it matters:

• Efficiency Gains: telli’s AI agents manage first-touch, repetitive calls during peak hours, allowing human teams to focus on complex relationships and product explanations.
• Market Growth: The AI voice agent market is projected for rapid expansion, from $2.54 billion in 2025 to $35.24 billion by 2033, indicating significant opportunity for specialized solutions.
• Proven Leadership: Two of telli’s founders previously scaled Enpal’s heat pump sales team from 2 to 150 people in one year, demonstrating a track record in rapid operational expansion.

How it works:

• Hybrid Model: telli’s platform is designed for AI and humans to collaborate, with AI handling high-volume, routine interactions and humans managing nuanced customer engagement.
• AI Coworker: An AI assistant named Charlie reviews calls and continuously improves the performance of telli’s AI agents.
• Advanced Architecture: Agents operate on a cascading pipeline of transcription, language model processing, and voice generation, with plans to evolve to speech-to-speech models for broader use cases.

The catch: While telli claims 9x year-on-year revenue growth for clients like Sky and Enpal, specific starting figures remain undisclosed. This lack of detailed metrics, combined with the competitive landscape including incumbents like Talkdesk, Aircall, Genesys, and Five9, presents a challenge in a rapidly evolving market where sentiment can outweigh hard evidence for funding rounds.