0208 GMT - MediaTek sees custom AI silicon a major long-term growth engine supported by its existing hyperscaler engagement and the new Nvidia partnership, Citi analysts say following an industry expo in Taiwan. The deepened alliance with Nvidia represents a different business model, with MediaTek helping Nvidia integrate customers seeking customized AI chips into Nvidia's rack-scale ecosystem, they note. For its custom AI chip customer base, two generations are underway and a third is in discussion, while MediaTek targets at least one additional customer this year, Citi notes, with new customer expected to contribute to MediaTek's revenue in 2028 given long design cycles, they add. Shares are last 8.95% higher at NT$4,810.00.