Global stock markets traded unevenly on Friday as growing concerns about artificial intelligence (AI) unsettled investors, following a decline in Alphabet shares that weighed on US markets.

In early European trading, France's CAC 40 rose 0.2% to 7,988.84, while Germany's DAX slipped 0.1% to 26,008.99. Britain's FTSE 100 gained nearly 0.4% to 10,759.33.

US stock futures indicated a mixed opening, with Dow futures rising 0.2% to 52,613.00, while S&P 500 futures fell 0.8% to 7,689.00.

In Asia, Japan's Nikkei 225 dropped 2.1% to close at 63,290.11. The Bank of Japan kept its benchmark interest rate unchanged at 1.25% after concluding its two-day monetary policy meeting, as widely expected following a rate increase last month.

The United States has been urging Japan to raise interest rates amid concerns over the weakening yen. The dollar fell to 157.28 yen from 157.65 yen, while the euro edged up to $1.1196 from $1.1181.

Australia's S&P/ASX 200 gained 0.2% to 8,908.10, while South Korea's Kospi plunged 3.5% to 5,730.74, with shares of major chipmakers SK Hynix and Samsung Electronics declining.

AI-related stocks have experienced significant fluctuations as enthusiasm for the technology has driven share prices higher, while concerns over supply constraints have triggered sell-offs.

Hong Kong's Hang Seng Index advanced 1.5% to 23,294.42, while the Shanghai Composite Index fell 1.4% to 3,599.02.

In energy markets, US benchmark crude oil rose 1.53% to $103.56 per barrel. Brent crude, the international benchmark, gained 1.65% to $116.77 per barrel.