Zhipu AI, the Chinese AI model developer listed in Hong Kong under the name Z.ai, is pursuing roughly $5 billion in fresh capital through two simultaneous instruments: a share placement and a convertible-bond sale1.
The company filed to raise about HK$15.7 billion (approximately $2 billion) through a placement of roughly 21.97 million new H shares priced at HK$714 each. Alongside the equity raise, Z.ai disclosed a 20.14 billion yuan (approximately $3 billion) convertible-bond sale, according to its filing with the Hong Kong stock exchange.
Z.ai closed at HK$793 on Friday, down 73 percent from its intraday high. The placement price of HK$714 per share sits below that closing level.
The fundraising push follows a period of visible product momentum. On August 26, Z.ai confirmed it had built Ox Alpha, the anonymous model that topped OpenRouter's leaderboard and set a single-day usage record after launching with no attribution and zero cost on August 20[3]. The company simultaneously identified Ox Alpha as GLM-5.3-Flash, a 320-billion-parameter open-weight model priced at $0.075 per million tokens[3]. Separately, Arize AI's phoenix-cli version 1.17.0 added Z.ai's GLM models as a built-in provider[2].
ANALYSIS The combined $5 billion raise, split between equity dilution and convertible debt, represents one of the larger single capital events for a publicly listed Chinese AI model developer. The dual-instrument structure lets Z.ai tap both equity and debt markets simultaneously, though the share placement price below Friday's close implies a discount to attract buyers.