Moonshot AI Unveils Kimi K3, World's Largest Open-Weight AI Model

Chinese AI firm Moonshot AI has launched Kimi K3, hailed as the world's largest open-weight AI model, which quickly overwhelmed demand, prompting a halt in new subscriptions, showcasing its powerful market appeal and technical prowess.

The top 3

  1. Kimi K3's Parameter Scale: Moonshot AI's Kimi K3 boasts 2.8 trillion parameters, establishing it as the world's largest open-weight AI model to date.
  2. Leading Proprietary Models: Proprietary models like Anthropic's Claude Mythos 5 and OpenAI's GPT-5.6 Sol lead in overall benchmark performance, though their exact parameter counts are often undisclosed.
  3. Other Open-Weight Contenders: DeepSeek V4 Pro, at 1.6 trillion parameters, and Mistral Large 3, with 675 billion total parameters, are among the largest released open-weight models.

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