Kimi K3, world's largest open-weight model, launches on Together AI and other platforms

Moonshot AI's Kimi K3, a 2.8-trillion-parameter open-weight model, is now available on Together AI, Nebius, Fireworks, Baseten, and Modal. It supports 1M context and competes with GPT 5.6 Sol and Claude Fable 5. On DeepSWE, it trails Claude Fable 5 by 1.4 points on pass@1 but wins pass@4 and delivers 2.8x more solves per dollar.