parameters

Moonshot AI released Kimi K3 on July 16, 2025, an open-weight model with 2.8 trillion parameters. The model represents the largest openly available model by parameter count, entering what the industry categorizes as the 3T class.

Beijing-based Moonshot AI released Kimi K3, China's largest AI model at 2.8 trillion parameters. The company claims the model consistently outperforms OpenAI's GPT 5.5 and Anthropic's Claude Opus 4.8 on benchmarks including coding and general agents, though it still trails the leading-edge GPT 5.6 Sol and Claude Fable 5 in overall performance.