Taiwanese chip designer MediaTek has confirmed a second customer for its custom artificial intelligence accelerator chips, a step that moves the company further beyond its smartphone roots and deeper into the data-center business dominated by a handful of large suppliers. The disclosure came during MediaTek’s third-quarter 2026 earnings call on October 30, when executives said co-design work with the new customer is already underway and mass production is expected in 2028.
MediaTek did not name the customer and did not disclose expected revenue from the program. But it did address one piece of market speculation directly: the company said the second customer is not a Chinese firm, pushing back on earlier chatter that ByteDance was the mystery buyer. That clarification matters because the identity of a chip customer’s home market can shape how investors read geopolitical risk, supply-chain exposure and the commercial durability of a deal that will not reach volume production for another two years.
Key Takeaways
- MediaTek confirmed a second customer for its custom AI accelerator chips, with co-design underway and mass production targeted for 2028.
- The company said the new customer is not Chinese, answering speculation that ByteDance was the mystery buyer.
- MediaTek’s first AI accelerator began small-volume shipments in September 2026, and the company raised its 2027 ASIC revenue target to about $16 billion.
What MediaTek Announced
The second customer program is the newer of MediaTek’s two disclosed AI accelerator efforts. The first customer’s chip is further along: MediaTek began small-volume shipments of its first AI accelerator in September 2026, and chief executive Rick Tsai told investors that demand for that product looks strong. The company forecast $2.5 billion in data-center revenue for the fourth quarter of 2026, a figure that covers the broader data-center business rather than a single customer program.
MediaTek also raised its 2027 revenue target for its application-specific integrated circuit (ASIC) business to approximately $16 billion. That is a target, not a booked result, and it sits alongside an earlier goal set in July of capturing 15 to 20 percent of an $80 billion AI accelerator market in 2027. Taken together, the numbers describe a company betting that custom chips built for specific cloud customers can become a second engine alongside its established mobile business.
MediaTek confirmed a second customer for its custom AI accelerator chips, with co-design underway and mass production targeted for 2028.
Why Custom AI Chips Matter
An ASIC is a chip designed for one job rather than general-purpose computing. For cloud companies running AI workloads at enormous scale, a custom accelerator can be tuned to their exact software and data-center layout, potentially cutting power use and cost per task compared with buying off-the-shelf graphics processors. That is why several large technology companies have pursued their own silicon, and why chip designers like MediaTek are competing to build it for them.
The trade-off is concentration risk. A custom program depends on a small number of customers, long development cycles and precise manufacturing execution. MediaTek addressed one part of that execution question on the call, saying development of its second-generation ASIC remains on schedule. Several dies in the multi-die design have already completed tape-out, meaning their designs are finalized and sent for manufacturing, while larger, more complex dies are expected to follow within the original timeline despite needing several additional weeks.
On advanced packaging, MediaTek said it is working closely with a United States integrated device manufacturer and substrate suppliers to improve yields. Market observers have suggested the partner is Intel and the technology is EMIB-T, though MediaTek did not confirm those details. Packaging is the step that joins multiple dies into a single working chip, and yields there can decide whether a technically sound design becomes a commercially viable product.
- MediaTek’s second AI chip customer is unnamed; co-design is underway and mass production is targeted for 2028.
- The company said the customer is not Chinese, countering speculation about ByteDance.
- First AI accelerator shipments began in small volumes in September 2026.
- Third-quarter revenue reached NT$168.06 billion, up 18.3 percent from a year earlier, with a 46.3 percent gross margin.
- Fourth-quarter total revenue guidance is NT$210.1 billion to NT$221.8 billion, up 25 to 32 percent from the third quarter.
- The 2027 ASIC revenue target of about $16 billion is a goal, not booked revenue.
Strong Quarter, Careful Reading
The earnings themselves were solid. MediaTek reported third-quarter revenue of NT$168.058 billion, up 18.3 percent from a year earlier, with a gross margin of 46.3 percent and net income up 10.8 percent. For the fourth quarter, the company guided total revenue of NT$210.1 billion to NT$221.8 billion, up 25 to 32 percent quarter on quarter. Those are companywide results, not figures for the AI accelerator business alone, and they reflect a business that still spans smartphones, smart devices and connectivity alongside its newer data-center push.
The broader chip cycle adds context. Samsung’s record third-quarter profit, reported days earlier, was driven by the same AI hardware boom, while startups building AI inference chips continue to raise large rounds. At the same time, scrutiny of the AI supply chain is rising, as shown by competition questions around major AI deals. MediaTek’s pitch sits in the middle of that picture: custom silicon as a way for cloud customers to control their own AI infrastructure rather than depending entirely on one supplier.
Investors also noted the financing backdrop. In August, MediaTek sold a record $3.9 billion of overseas convertible bonds, including $3.5 billion bought by Nvidia, with Alphabet also participating. That deal does not make Nvidia a customer of the new ASIC program, and MediaTek has not said so, but it underlines how intertwined the AI chip ecosystem has become, with competitors, customers and investors often overlapping.
What to Watch Next
What to watch next is whether MediaTek names the second customer or discloses the size of the program, whether the second-generation ASIC stays on schedule through its remaining tape-outs, and whether packaging yields improve enough to support volume production in 2028. The nearer test is the fourth quarter: whether data-center revenue reaches the forecast $2.5 billion and whether the first accelerator’s shipments scale beyond small volumes. Until then, the second customer remains a confirmed program with an unnamed buyer, a 2028 production target and a deliberately narrow denial about who it is not.