Deepgram Raises $130 Million In Series C Funding Round

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Deepgram secured $130 million in Series C funding, achieving a $1.3 billion valuation and unicorn status, led by AVP with participation from existing investors like Tiger Global, Madrona, and Y Combinator, as well as new strategic backers including Twilio and SAP. The capital will fuel global expansion, development of next generation voice AI models, additional acquisitions, and the opening of a Voice AI Collaboration Hub in San Francisco.

Deepgram, a San Francisco-based provider of real time voice AI APIs, has secured $130 million in its Series C funding, valuing the company at $1.3 billion. This marks its entry into unicorn territory and reflects strong investor confidence in voice AI technologies for applications like customer service, healthcare, and media analytics. The company, already serving over 1,300 organizations, emphasized that it was not actively seeking capital but welcomed strategic partners to accelerate its vision.

The round was led by AVP, a global investment firm focused on high growth tech, with all major prior backers recommitting, including Alkeon, In-Q-Tel, Madrona, Tiger Global, Wing, Y Combinator, and BlackRock-managed funds. New participants include Alumni Ventures, Princeville Capital, Citi Ventures, Twilio, ServiceNow Ventures, SAP, and universities like Columbia and Michigan, joining existing academic investor Stanford. This mix of strategic, venture, and institutional investors highlights broad support for Deepgram’s infrastructure role in the voice AI ecosystem.

Proceeds will support international growth into Europe and beyond, multilingual capabilities, and new frontier models for low latency, human-like conversations at scale. Key initiatives include launching “Powered by Deepgram” branding for partners, expanding patents (with three U.S. grants in 2025), and opening a Voice AI Collaboration Hub in San Francisco for community events. The simultaneous acquisition of OfOne, an AI voice platform for quick service restaurants, integrates its tech into “Deepgram for Restaurants” to enhance order accuracy and customer experience.

Voice AI is experiencing rapid adoption, with Deepgram’s APIs enabling speech to text, text to speech, and autonomous agents amid a market expected to grow at over 30% CAGR to $14-20 billion by 2030. This round aligns with similar investments in the space, such as ElevenLabs’ $180 million Series C, underscoring investor enthusiasm for real time, scalable voice tech.

Deepgram’s $130 million Series C funding round represents a pivotal milestone for the San Francisco-based voice AI company, elevating its valuation to $1.3 billion and cementing its unicorn status in a burgeoning market. Founded in 2015 by Scott Stephenson, Adam Sypniewski, and Noah Shutty, Deepgram has evolved from addressing frustrations with legacy speech recognition systems to becoming a foundational API platform for real time voice AI, powering applications across customer support, healthcare, media analytics, and emerging autonomous agents. The company’s focus on end to end deep learning has enabled it to process over 125,000 years of audio and 1 trillion words, serving more than 1,300 organizations with models like Nova-3 for speech to text, Aura-2 for text to speech, and Flux for speech to speech capabilities.

This latest infusion brings Deepgram’s total funding to over $215 million, building on a history of strategic raises that have fueled its growth. Prior rounds include a $47 million Series B extension in 2022 that completed a $72 million Series B, as well as earlier investments dating back to its Y Combinator accelerator participation in 2015. The Series C was led by AVP, a Paris-based global investment platform specializing in high growth tech firms across Europe and North America, with Elizabeth de Saint-Aignan, General Partner at AVP, drawing parallels to Stripe’s role in payments, positioning Deepgram as the API backbone for a potential trillion dollar B2B voice AI economy. All major existing investors recommitted, including Alkeon Capital, In-Q-Tel, Madrona Venture Group, Tiger Global, Wing VC, Y Combinator, and funds managed by BlackRock, demonstrating sustained confidence in Deepgram’s trajectory. New entrants such as Alumni Ventures, Princeville Capital, Citi Ventures, Twilio, ServiceNow Ventures, SAP, Columbia University, and the University of Michigan add strategic depth, with academic backers like Stanford (existing) underscoring the company’s research oriented roots.

The funding coincides with several key announcements that illustrate Deepgram’s forward momentum. Notably, the acquisition of OfOne, a Y Combinator-backed AI startup specializing in voice platforms for restaurants and drive-thrus, integrates its technology into “Deepgram for Restaurants,” aiming to improve order accuracy (claimed at over 93%), customer satisfaction, and staff efficiency through real time AI assistance. OfOne’s team, led by former CEO Will Edwards (now GM of Deepgram for Restaurants), joins Deepgram to scale this vertical internationally. Additionally, Deepgram launched “Powered by Deepgram,” a branding initiative highlighting its role as infrastructure for partners building voice AI features, encompassing speech understanding, generation, analytics, orchestration, and fully autonomous agents. The company also expanded its patent portfolio, with three U.S. patents granted in 2025 for advancements in end to end automatic speech recognition, hardware efficient models, and deep learning based search and classification. Plans include opening a Voice AI Collaboration Hub in San Francisco for community events, hackathons, and demonstrations, fostering innovation in the space.

CEO Scott Stephenson reflected on the raise as a culmination of a decade long journey, from pioneering deep learning for voice in 2015 to powering billions of conversations today. He emphasized Deepgram’s commitment to achieving the “audio Turing test” in 2026, where machine interactions mimic human speech indistinguishably, focusing on active listening, intent detection, emotion recognition, and natural responses. Stephenson noted the company was cash flow positive and not urgently needing funds, but the strategic alignment with investors will accelerate global expansion, multilingual support, and pursuit of additional acquisitions. Partners like Twilio’s Andy O’Dower highlighted synergies, combining Deepgram’s APIs with orchestration tools for seamless, low latency experiences.

In the broader market context, voice AI is amid a renaissance, with demand for real time, duplex conversations driving investor interest. The sector is projected to expand from current valuations to $14-20 billion by 2030 at a 30%+ CAGR, fueled by applications in B2B settings like enterprises shifting to voice first interfaces. Deepgram’s raise follows similar large rounds, such as Sesame’s $250 million Series B and ElevenLabs’ $180 million Series C, indicating a competitive yet opportunity rich landscape. Industry reactions on platforms like X (formerly Twitter) have been positive, with congratulations from partners and analysts emphasizing Deepgram’s disciplined execution, cost optimization, and reliability. However, the space faces challenges like ensuring scalability, privacy in voice data, and competition from giants like Google and Amazon, though Deepgram’s focus on developer friendly, customizable APIs differentiates it.

This funding not only validates Deepgram’s technical prowess, evidenced by its patents and processing scale, but also positions it to lead in a voice centric future, where AI enables billions of simultaneous, contextual interactions. As voice becomes the “original human interface,” Deepgram’s infrastructure could underpin transformative shifts in how businesses engage customers, potentially mirroring the impact of APIs in other digital economies.

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Funding History Table

Key Investors Table

This round’s implications extend beyond capital, signaling voice AI’s mainstream ascent and Deepgram’s role in driving it forward amid evolving technological and market dynamics.

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