Nov 18, 2025

Investments Led by CapitalG and Sutter Hill Ventures to Enable AI Infrastructure to Scale-Across Next Generation Optical Interconnects IRVINE, Calif., November 17, 2025-- Celero Communications, a leader in high-performance coherent DSP (digital signal processor) technology for AI infrastructure, today announced that it has raised a total of $140 million in funding. This includes a recent $100 million Series B investment led by CapitalG (Alphabet's independent growth fund) and earlier Series A and seed rounds totaling $40 million led by Sutter Hill Ventures with participation from Valor Equity Partners, Atreides Management, Maverick Silicon, and others. The funding positions the company to address a rapidly expanding market for coherent optical connectivity. Celero's coherent DSP platform provides the essential signal processing that enables AI systems to scale-across AI accelerator clusters and cloud data center connections with unmatched bandwidth efficiency. As AI architectures expand from single-rack systems to millions of AI accelerators and interconnected data center networks, Celero's technology delivers the scalable performance, power efficiency, and cost advantages that define the next generation of accelerated computing. “This investment underscores the confidence investors have in Celero's mission to redefine how AI infrastructure connects and scales,” said Nariman Yousefi, co-founder and CEO of Celero. “As AI models and clusters grow exponentially, today's data centers face severe limits in bandwidth, cost, and energy efficiency. Our coherent DSP technology delivers the optical performance and scalability needed to remove these bottlenecks, establishing the foundation for large-scale, accelerated computing networks.” Celero founders Nariman Yousefi and Oscar Agazzi are former senior executives at Marvell, Inphi, Broadcom, and ClariPhy who have shipped multiple generations of DSPs and networking IC solutions. Celero is redefining the coherent DSP market with breakthrough silicon and system-level integration. “Amid the explosive growth of artificial intelligence, Celero is uniquely positioned to meet the soaring demands of AI infrastructure,” said James Luo, General Partner at CapitalG and member of the Celero board of directors. “The experienced leadership and differentiated architecture at Celero position the company to lead in AI-driven network innovation. We're proud to partner with Nariman Yousefi, Oscar Agazzi, and the team as they execute their vision.” With the industry at a key inflection point for scaling accelerated computing, Celero's coherent DSP innovation unlocks the performance and scalability required to connect the next generation of large-scale AI clusters. “Celero's coherent DSP innovation directly addresses one of the most pressing challenges in AI infrastructure: efficient, scalable optical connectivity,” said Stefan Dyckerhoff, Managing Director at Sutter Hill Ventures and Celero board member. “The team's track record in building and commercializing advanced coherent solutions is unmatched in the industry, and their focused approach positions Celero to lead the next wave of AI infrastructure.” About Celero Communications Celero Communications develops advanced coherent DSP solutions that enable high-bandwidth, low-power optical connectivity for AI infrastructure. Founded in 2024 by industry leaders from Marvell, Inphi, Broadcom, and ClariPhy, Celero combines deep expertise in analog design, digital signal processing, and system architecture to redefine how data centers connect and scale-across large AI networks. The company is headquartered in Irvine, California, with design centers in Canada and Argentina. Learn more at www.celero.inc. About CapitalG CapitalG, Alphabet's independent growth fund, invests in remarkable companies transforming the fields of enterprise infrastructure, AI, security, and data; fintech; and consumer services and marketplaces. CapitalG partners with growth stage companies in their transition from startup to scale up through hands-on assistance and connections to Google's engineering, product, marketing, sales and people operations experts worldwide. More than 3500 Googlers and Alphabet leaders have engaged with CapitalG portfolio companies, including Stripe, CrowdStrike, Databricks, Duolingo, Monzo, Base Power, Abridge, UiPath and Zscaler, among others. Learn more at https://capitalg.com/ Contact: Media Contact: melissasobel@capitalg.com. VCPro Database 2025 2025 New Edition Available! (Updated July 2025) Price: $119.5 (including a free update in January 2026) Discover venture capital effortlessly with the affordable VCPro Database , the top directory for venture capital and private equity.