Kimi K3: Moonshot's most capable model and the first open 3T-class release - 2.8T parameters, a 1M-token context window, and native vision, built for repository-scale understanding and long agentic runs at closed-frontier quality (92.4% vs Claude Fable 5's 92.6% across ~1,030 agentic tasks in Fireworks' independent study). It thinks by default at maximum reasoning effort; select none, low, high, or max to trade depth for speed.