The fundraising follows MiniMax’s Hong Kong IPO in January, in which the company raised roughly HK$4.8 billion (about $614 million) at a valuation of approximately $6.5 billion.
The GPT-5.6 family consists of three models—the flagship GPT-5.6 Sol model, GPT-5.6 Terra as the mid-tier offering, and GPT-5.6 Luna as the lower-cost option.