The MiniMax Group Inc. AI app arranged on a smartphone in Shanghai.Photographer: Raul Ariano/BloombergMiniMax Group Inc. reported a better-than-expected 159% surge in revenue in 2025, reflecting the torrid growth that’s drawn investors to China’s leading OpenAI rivals.Revenue for the full year ended December climbed to $79 million, versus an average analyst estimate of $71.4 million. Net loss for the same period was $1.87 billion compared with the $465.2 million loss the year prior, though the m...