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Announcement · June 23, 2026

Valence AI Raises $5 Million, Secures U.S. Patents on Real-Time Emotional Detection from Live Speech

Valence AI today announced $5 million in seed funding led by Differential Ventures, alongside the issuance of two U.S. patents on its proprietary audio signal processing pipeline, among the only patents ever issued on identifying emotional state from live speech in real-time conversation.

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Valence AI Raises $5 Million, Secures U.S. Patents on Real-Time Emotional Detection from Live Speech

SAN FRANCISCO, June 24, 2026 — Valence AI, an emotional intelligence infrastructure company, today announced $5 million in total funding, including a seed round led by Differential Ventures, with participation from Difference Partners, Willowtree Ventures, Change Paradox Ventures, and SRI International. The announcement coincides with the issuance of two U.S. patents on the company’s proprietary audio signal processing pipeline, among the only patents ever issued on identifying emotional state from live speech in real-time conversation using deep learning.

The company builds the emotional intelligence infrastructure for voice AI. Its Pulse Emotion model analyzes live calls and classifies emotional state from speech in real time, turning tone, pacing, and other vocal cues into structured data that voice agent builders, contact center platforms, and sales and support teams can act on alongside transcripts and intent. The company was founded by Chloe Duckworth and Shannon Brownlee, who launched Valence AI after a hackathon project focused on helping neurodivergent people better understand emotional cues in conversation.

Valence AI develops and publishes its own foundation models, trained on proprietary speech datasets built to reflect a wide range of demographic and neurotype diversity, and reports 92 percent accuracy on internal benchmarks. Products include emotion-aware IVR, an Agent Assist copilot for live call coaching, emotionally intelligent AI voice agents, and post-call quality assurance. Integrations with ElevenLabs and Cartesia enable realistic, expressive audio informed by its emotional analysis of the speaker. In production deployments, the company reports handle time reductions of 30 percent, alongside gains in customer satisfaction scores, close rates, and time to close.

“Voice AI has made enormous progress toward understanding what people say. The more challenging gap remains what people mean, and emotional state understanding is the signal that closes that gap,” said Nick Adams, Managing Partner at Differential Ventures. “Valence AI is building the infrastructure layer that makes that signal usable, and they are doing it with proprietary models, issued patents, and enterprise-scale deployments that deliver measurable business impact.”

The company holds two U.S. patents on identifying emotional state from live speech in real-time conversation, both issued in June 2026. The patents cover how Valence AI converts raw audio into an emotion classification, normalizing for pitch and timbre so the signal reflects a speaker’s emotional state rather than their demographic profile. One patent covers the core signal processing pipeline; the other extends that method to include live haptic feedback. Valence AI both owns the IP and runs commercial deployments on the same technology, a combination that remains uncommon in the emotion AI market.

“Voice AI has gotten remarkably good at understanding what people say, but it still can’t hear how they feel: the frustration under a polite request, the hesitation before someone hangs up,” said Chloe Duckworth, co-founder and CEO of Valence AI. “That gap between human experience and machine intelligence is exactly what we close. Real emotional alignment begins when models understand both the intent and impact of their output. We’re building the emotional communication layer that gives voice AI that understanding.”

The new funding will support expansion of Pulse’s language coverage, currently live in English with additional languages underway, deeper integrations across voice AI orchestration platforms, and new hires in engineering, go-to-market, and customer success. Valence AI’s customers include Harte Hanks, CustomerHD, and BPO Centers. Its technology is deployed across Fortune 500 retailers, healthcare, and clinical research environments. The company has also introduced the Emotion Quotient, a customer satisfaction metric calculated from real-time emotional signals during each turn of a call rather than post-call surveys, designed as a more precise alternative to NPS for voice-heavy businesses.

About Valence AI

Valence AI builds emotional intelligence infrastructure for voice. Its patented signal processing pipeline and Pulse Emotion models listen to how people sound on calls, detect how they feel in real time, and turn that into data voice AI systems can use alongside intent and transcripts. The company holds two issued U.S. patents on its core signal processing methodology and serves customer intelligence and contact center operators across customer support, financial services, and healthcare. Its products, including emotion-aware IVR, Agent Assist, AI Agent, and post-call quality assurance, are SOC 2 Type 2 and HIPAA compliant. Learn more at getvalenceai.com.

About Differential Ventures

Differential Ventures is an early-stage venture capital firm founded in 2018, that invests in enterprise AI and data infrastructure companies at the pre-seed and seed stages. The firm partners with technical founders building dynamic AI systems and data technologies that enable the data-driven economy. Differential is comprised of industry experts from leading hedge funds and executives from high-growth tech companies who provide domain expertise, operational support, and a specialized network to help portfolio companies scale. For more information, visit https://www.differential.vc/.

Media Contact

Laura Anderson McGrath for Valence AI stones@glasshousesconsulting.com

About Valence AI

Valence AI builds emotional intelligence infrastructure for voice. Its patented signal processing pipeline and Pulse emotion models listen to how people sound on calls, detect how they feel in real time, and turn that into data voice AI systems can use alongside intent and transcripts. The company holds two issued U.S. patents on its core signal processing methodology, and serves conversational intelligence and contact center operators across customer support, financial services, and healthcare. Its products — emotion detection APIs, conversational analytics, emotion-aware IVR, Agent Assist, AI Voice Agent, and post-call quality assurance — are SOC 2 Type 2 and HIPAA compliant. Learn more at getvalenceai.com.

Products

Pulse Emotion Model

Real-time emotional classification from live speech or pre-recorded audio. Returns structured emotional state data alongside transcripts. Integrates with ElevenLabs and Cartesia text-to-speech models to produce expressive audio informed by emotional analysis of the speaker. Currently live in English; additional languages in development.

Agent Assist

Live call coaching copilot. Surfaces real-time escalation signals and tonal cues to agents and supervisors mid-call.

Conversational Intelligence

Conversation analytics that track emotional progress over time, showing when sentiment improves, trust builds, or frustration signals a need to intervene.

Emotion-Aware IVR

Routes and responds based on emotional state before a call reaches a human agent.

AI Voice Agent

Emotionally-intelligent AI voice agents that adjust language and tone based on real-time emotional signal.

Post-Call QA

Full-coverage diagnostic analysis of every call. Converts QA from random sampling into precision tonal review at scale.

Fast Facts

Funding: $5M seed, led by Differential Ventures

Investors: Differential Ventures, Difference Partners, Willowtree Ventures, Change Paradox Ventures, SRI International, angels

Patents: Two issued U.S. patents (Nos. 12,646,527 and 12,646,528, issued June 2026)

Model accuracy: 92% on internal benchmarks (North American English)

Latency: 50-300 ms

Production impact: 10 to 30% reduction in average call handle time

Compliance: SOC 2 Type 2, HIPAA

Customers: Harte Hanks, CustomerHD, BPO Centers, Tattva Health, Thea Life

Founders: Chloe Duckworth (CEO), Shannon Brownlee (CTO)

Emotion Quotient: proprietary Valence metric to measure customer satisfaction more accurately than NPS

Integrations: ElevenLabs, Cartesia

Science: Based on 5 years of research in computational neuroscience, signal processing, and machine learning

Founders

Chloe Duckworth
Co-founder & CEO

Chloe Duckworth co-founded Valence AI and serves as CEO. She studied computational neuroscience at USC, completing her BS in two and a half years before leaving to build Valence full-time. Her work centers on how the brain encodes and reads emotional signal from acoustic input — the foundation of Valence’s approach.

Shannon Brownlee
Co-founder & CTO

Shannon Brownlee co-founded Valence AI and serves as CTO. She holds an MS in Electrical Engineering and a BS in Quantitaive Biology from USC, her studies concentrated on machine learning for biological and time series data. Her previous work inspired the signal processing strategy and model architecture behind Valence’s Pulse emotion model.