Whalesbook
Cursor's New AI Model Sparks Questions Over Chinese Roots
The launch of Cursor's Composer 2 coding AI model has drawn attention due to its foundation in Moonshot AI's Kimi 2.5, a Chinese open-source tool. Reports indicated a substantial reliance on this base, leading to questions about transparency from Cursor, a U.S. startup valued at $29.3 billion, which did not disclose the Kimi connection in its announcement.
Cursor Confirms Chinese AI Base, Highlights Proprietary Training
Cursor Vice President Lee Robinson stated that Composer 2 began with an open-source base, contributing about a quarter of the model's compute. He emphasized that the majority of the model's capabilities come from Cursor's extensive proprietary training. Moonshot AI confirmed via X that Cursor licensed Kimi 2.5 through an authorized commercial partnership via Fireworks AI, expressing pride in the integration.
Disclosure Lapse Fuels US-China AI Competition Debate
The initial lack of disclosure has raised concerns against the backdrop of the US-China AI competition. Using a Chinese AI model can be perceived as strategically sensitive. Cursor co-founder Aman Sanger acknowledged the misstep, promising that future models will include necessary disclosures.