Moonshot AI Releases Kimi K3, a 2.8-Trillion-Parameter Open-Weight Model Targeting Frontend Coding

China's Moonshot AI has unveiled Kimi K3, a 2.8-trillion-parameter open-weight model that the company positions as the world's largest openly available AI system, with early testing suggesting it can rival — and in some coding-focused benchmarks surpass — flagship models from Anthropic and OpenAI while undercutting them on price.