Moonshot ships Kimi K3: 2.8T open MoE, Opus-4.8-class at Sonnet-5 pricing

A 2.8-trillion-param open mixture-of-experts with a 1M-context window, benchmarking near Opus 4.8 while priced like Sonnet 5. Weights land Jul 27. Already routable via Vercel AI Gateway, so A/B it against your current frontier model on cost-per-task before the weights even drop.