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

Modulate, a Boston-based startup founded by Mike Pappas and Carter Huffman, has secured $25 million in new financing to develop and scale its voice intelligence platform. The company, which began by offering voice modulation tools for gaming, has shifted its focus toward voice-based moderation and detecting AI-generated audio as synthetic voice technology has proliferated.

The platform runs more than 100 relatively small models organized into two primary groups: signal-extraction models that assess vocal features such as emotion, tone, language and synthetic voice indicators, and analysis/detection models that infer intent and flag potential violations like scams or policy breaches. Modulate says this modular approach reduces the need for specialized hardware and large compute bills while allowing the company to add and orchestrate models as needed.

Modulate’s customers include enterprises and call centers that use the service for deepfake detection, scam alerts, and to evaluate how AI agents interact with customers for compliance and quality assurance. The company emphasizes that understanding conversational nuance and intent—beyond simple transcription or surface-level sentiment—is increasingly important as AI-driven customer service becomes more widespread.

The startup currently employs roughly 40–45 people and plans to hire about 10 more to strengthen model development. It is also working to expand on-premises and on-device deployment options to support increased privacy requirements. The $25 million round was led by Future Ventures with participation from Hyperplane and Lakestar, and follows earlier funding that PitchBook reported as $41 million at a $170 million valuation.