A Beijing-based AI startup just dropped what it says is the biggest open-weight AI model on the planet. And the early numbers suggest it’s not bluffing.
Moonshot AI released Kimi K3, a model packing 2.8 trillion parameters and a 1-million-token context window. The company claims performance that rivals or surpasses top-tier offerings from Anthropic and OpenAI, particularly in coding and knowledge-work benchmarks.
What makes Kimi K3 different
Kimi K3 claimed the top spot on Frontend Code Arena with an Elo rating of 1679, and landed second overall on several other independent leaderboards. In coding tasks and GPU optimization specifically, independent evaluations placed it ahead of leading US models.
Moonshot is emphasizing cost advantages, positioning Kimi K3 as a model that delivers frontier-level capabilities without frontier-level pricing.
