Modulate, a Boston company building AI that listens to conversations rather than just transcribing them, has raised $25 million led by Future Ventures, with Hyperplane and Lakestar participating.

The company was founded by Mike Pappas and Carter Huffman, who met as physics undergraduates at MIT. It had previously raised $41 million at a $170 million valuation.

Past the Transcript

Modulate first became known for ToxMod, a voice moderation tool used to catch harassment in online games. The company has since broadened into a voice intelligence platform: transcription plus emotional analysis, deepfake and AI-music detection, and policy enforcement for voice agents.

"Our insight into the voice AI space is that a lot of folks are doing transcription, but there's not really any capability out there that gets the full nuance and full understanding of a conversation," Huffman said.

The company says it has more than 100 models deployed.

Where It Sells

The commercial focus is call centers and enterprises running AI customer service, with particular attention to regulated industries where what was said, and how, carries compliance weight.

Huffman points to a limitation of text-only analysis: "Many times people will be polite even to AI agents or bots," he said, "but they'll be very dissatisfied." A transcript scores that call as fine. The audio does not.

Where the Money Goes

Modulate plans to strengthen its model-building capability and expand on-premises and on-device deployment for customers who cannot send audio to a vendor's cloud. The company has 40 to 45 employees and plans to hire about 10 more.

TechCrunch reported the raise, covering the voice models and analysis suite.

Why It Matters

As companies hand more customer conversations to AI agents, someone has to evaluate how those conversations are actually going. Deepfaked voices also make verification a live problem for any business that authenticates people by phone.

Both needs point at audio-native analysis rather than text pipelines, and Modulate has the advantage of years of voice data from a moderation product that had to work in the messiest conditions available: live game chat.

Source

TechCrunch — "Modulate raises $25M for its voice models and analysis suite"