[AINews] Kimi K3 2.8T-A50B: the largest open model ever released; Opus 4.8-class at Sonnet 5 pricing
Kimi K3, a 2.8T-parameter open model, has been released by Moonshot AI, rivaling the largest closed models and surpassing prior open competitors, with a comparable intelligence to Opus 4.8 and GPT-5.5, but behind Fable 5 and GPT-5.6 Sol. The model's pricing is at Sonnet 5 levels, with a cost per task of $0.94, and it uses Kimi Delta Attention (KDA) and Attention Residuals (AttnRes) for improved performance. AI summary