Ayar Labs

Ayar Labs

Optical chiplet interconnects for high-speed data

Overview

Ayar Labs makes advanced interconnects for connecting chips. Its products replace traditional electrical I/O with optical links to move data between chips, enabling much higher bandwidth at lower power. The optical interconnects, including high-density chiplets and lasers, work by guiding light to transfer signals between chips instead of electrical wires, reducing energy per bit and increasing data rates. The company differentiates itself by offering Photons Over Electrons, leveraging light-enabled chip-to-chip communication and high-speed optical interconnects in HPC and AI workloads, including an optically enabled FPGA developed with Intel. Ayar Labs targets AI, HPC, and other demanding compute environments where fast, energy-efficient data transfer matters. Its goal is to scale chip-to-chip communication to meet growing compute demands by delivering high-bandwidth, low-power optical interconnect solutions that replace electrical I/O.

About Ayar Labs

Simplify's Rating
Why Ayar Labs is rated
B-
Rated B on Competitive Edge
Rated B on Growth Potential
Rated C on Differentiation

Industries

Data & Analytics

Hardware

Industrial & Manufacturing

AI & Machine Learning

Company Size

201-500

Company Stage

Series E

Total Funding

$871.7M

Headquarters

Santa Clara, California

Founded

2015

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Simplify's Take

What believers are saying

  • Series E funding supports volume production, testing, and global expansion.[8]
  • Nvidia, AMD, MediaTek, and Alchip validation can accelerate ecosystem adoption.[8]
  • Wiwynn and TSMC partnerships position Ayar for rack-scale AI deployment.[8]

What critics are saying

  • Commercial scaling depends on flawless yield, packaging, and test execution.[8]
  • Hyperscalers can delay qualification if AI capex weakens or deployment standards shift.[8]
  • In-house optical roadmaps from Nvidia, AMD, Intel, or competitors can compress margins.[8]

What makes Ayar Labs unique

  • TeraPHY chiplets replace electrical I/O with silicon-photonic links for chip-to-chip communication.[1][4]
  • SuperNova provides a remote multi-wavelength light source for co-packaged optical interconnects.[1][4]
  • Ayar targets AI and HPC scale-up, not generic networking, optimizing bandwidth, latency, and power.[2][8]

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Funding

Total Funding

$871.6M

Above

Industry Average

Funded Over

8 Rounds

Series E funding typically includes additional rounds after Series D if the company needs more capital. The business is usually stable, and these rounds are typically used for further expansion or to address market challenges.
Series E Funding Comparison
Above Average

Industry standards

$100M
$250M
Reddit
$500M
Ayar Labs
$1.3B
Epic Games
$1.5B
Airbnb

Growth & Insights and Company News

Headcount

6 month growth

-3%

1 year growth

0%

2 year growth

0%
Commercial Times
Mar 13th, 2026
Alliance with Wiwynn: Ayar Labs establishes new AI rack-level architecture.

Alliance with Wiwynn: Ayar Labs establishes new AI rack-level architecture. Optimistic about the gradual expansion of global AI infrastructure development, CPO solution provider Ayar Labs is actively building an AI ASIC production and supply ecosystem to lay the foundation for the next wave of AI infrastructure growth. Following industry strategic investment partners such as MediaTek and Alchip, Ayar Labs announced a strategic alliance with Wiwynn, a major Taiwanese ODM for AI ASICs, on the 11th, collaborating to construct an advanced rack-level architecture designed specifically for optical connectivity and AI scaling networks. By combining Ayar Labs' CPO solutions with Wiwynn's capabilities in rack-level system design and manufacturing technology, this partnership will accelerate the progression of semiconductor innovation technologies towards system-level solutions, overcoming the limitations of copper cable bandwidth and transmission distances to create rack-level AI systems with optical interconnects. This will support the next-generation massive-scale AI computing demands of hyperscalers such as Amazon, Google, Microsoft, and Meta. In the jointly developed AI CPO solution, Ayar Labs' AI scale-up CPO technology, including the TeraPHY optical engine driven by the SuperNova external laser source, will be integrated into Wiwynn's new rack-level AI infrastructure that supports high-voltage direct current (HVDC) power supply. Founded in 2015, Ayar Labs focuses on transforming AI infrastructure through the industry's first proven CPO solution. After recently completing a new round of $500 million in financing, Ayar Labs' strategic investment partners include several international investment funds, as well as semiconductor ecosystem and industry-related investors. In addition to existing partners like AMD and NVIDIA, companies such as Alchip and MediaTek - major players in ASIC IC/IC design - have joined. Ayar Labs' capital has expanded to $870 million, and its company valuation has increased to $3.75 billion. Ayar Labs and Alchip collaborated in October last year to launch a CPO solution, incorporating eight Ayar Labs TeraPHY optical engines and two AI accelerators, with two full-mask accelerator dies built-in, eight HBM stacks, and four protocol converter chiplets. Based on TSMC's COUPE (Compact Universal Photonic Engine) platform, they combined Ayar Labs' silicon photonics TeraPHY ICs with Alchip's electrical interface dies and detachable fiber optic connectors to directly integrate optical I/O into the AI accelerator interface.

The Register
Mar 11th, 2026
Ayar Labs, Wiwynn develop 1,024-GPU photonic rack using 100-200kW vs. rivals' 600kW

Ayar Labs has partnered with ODM Wiwynn to develop a rack-scale reference platform capable of connecting over 1,024 GPUs into a unified system using optical interconnects. The design is expected to consume 100 to 200 kilowatts per rack, significantly less than current copper-based systems like Nvidia's 600-kilowatt configurations. The platform uses co-packaged optics to dramatically reduce power consumption whilst boosting reach and bandwidth by up to three times compared to conventional pluggable optics. By replacing copper interconnects with optical ones, Ayar can connect hundreds of systems across multiple racks to form a single logical server. The announcement follows Ayar's $500 million Series E funding round and addresses deployment infrastructure for its optical I/O chiplets. The reference design will debut at the Optical Fiber Communication Conference next week.

WAYA Media
Mar 4th, 2026
QIA Joins USD 500M Round for US-Based Semiconductor Startup Ayar Labs

QIA joins USD 500M round for us-based semiconductor startup Ayar Labs. by WAYA Staff - Mar 4, 2026 Image Source: EE Times Website * US semiconductor startup Ayar Labs raised USD 500M to scale production capacity and accelerate deployment of its optical AI infrastructure technology. * The round included Qatar Investment Authority alongside global institutional and investors across the AI and semiconductor ecosystem. * Founded in 2015, Ayar Labs develops optical interconnect technology replacing copper connections to improve AI data center performance and efficiency. Ayar Labs. US-based Ayar Labs closed USD 500 million in a Series E funding round led by Neuberger Berman. The round also saw participation from institutional investors such as AKR Invest, Insight Partners, Sequoia Global Equities, and 1789 Capital. Additionally, from the Middle East, the round saw participation from institutional investor Qatar Investment Authority (QIA). Founded in 2015 by Mark Wade, Vladimir Stojanovic, Chen Sun, Rajeev Ram, and Milos Popovic, Ayar Labs is a semiconductor startup. It focuses on developing optical interconnect technologies (co-packaged optics) that replace traditional electrical connections in chips and data centers. AI infrastructure. The company's AI scale-up CPO solution seeks to unlock AI performance and profitability. This is through replacing bandwidth-limited copper interconnects with optical connectivity. It claims that this provides the performance and efficiency gains required for next-generation AI infrastructure. Looking ahead, the company aims to scale high-volume production and test capacity to accelerate the deployment of its CPO solution. It also aims to expand global operations, including at its new Hsinchu, Taiwan, office, and strengthen ecosystem partnerships. "AI infrastructure is hitting a power wall driven by interconnect inefficiency. As bandwidth demands explode, copper becomes the bottleneck - consuming too much power and limiting AI throughput per watt and per dollar. Co-packaged optics overcomes these barriers, enabling thousands of GPUs to operate as a unified system. This funding fuels our ability to meet the demands of hyperscale AI," said Mark Wade, CEO and co-founder of Ayar Labs.

The Wall Street Journal
Mar 3rd, 2026
Exclusive | Startup Making AI Chips More Power-Efficient Raises $500 Million

Ayar Labs, which is replacing the copper wiring in semiconductors with fiber optics, is valued at $3.8 billion in the deal.

Data Centre Dynamics Ltd
Mar 3rd, 2026
Optical interconnect startup Ayar Labs closes $500m funding round backed by Nvidia and AMD

Optical interconnect startup Ayar Labs closes $500m funding round backed by Nvidia and AMD. Latest fundraise values the company at $3.75bn March 03, 2026 Optical interconnect startup Ayar Labs has raised $500 million in a Series E funding round that saw participation from Nvidia, AMD, MediaTek, and Alchip. Led by investment firm Neuberger Berman - which will also take up a board observer role - the round brings the total raised by the company to $870m, valuing it at $3.75 billion. - Ayar Labs The new funding will be used to scale high-volume production and test capacity and expand global operations, Ayar Labs said. This includes growing its new office in Hsinchu, Taiwan, and accelerating the deployment of its co-packaged optics (CPO) solution, first unveiled in September 2025. "AI infrastructure is hitting a power wall driven by interconnect inefficiency. As bandwidth demands explode, copper becomes the bottleneck - consuming too much power and limiting AI throughput per watt and per dollar," said Mark Wade, CEO and co-founder of Ayar Labs. "Co-packaged optics overcomes these barriers, enabling thousands of GPUs to operate as a unified system. This funding fuels our ability to meet the demands of hyperscale AI." Founded in 2015, California-based Ayar Labs develops optical interconnect solutions based on open standards, optimized for AI training and inference workloads. In April 2025, the company unveiled the world's first UCIe (Universal Chiplet Interconnect Express) optical interconnect chiplet. Five months later, Ayar Labs announced it had partnered with Taiwanese ASIC company Alchip to develop scalable AI infrastructure based on CPO technology. Offering an ultra-high bandwidth, low-latency, and energy-efficient solution for AI clusters, the solution features Ayar Labs' TeraPHY optical engines co-packaged with Alchip's advanced solutions on a common substrate, bringing optical I/O directly to the AI accelerator interface. The partners are working with TSMC on the project, using the chipmaker's advanced packaging and process technology, including COUPE, TSMC-SoIC, and advanced process nodes. More in investment / M&A / financing.

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