[AINews] Kimi K3 2.8T-A50B: the largest open model ever released; Opus 4.8-class at Sonnet 5 pricing
Moonshot AI has launched the Kimi K3, a groundbreaking open model with 2.8 trillion parameters, positioning it as a competitive alternative to leading closed models like GPT-5.6 Sol, while promising open weights by July 27, 2026. Despite its impressive specifications and early successes in benchmarks, K3 still faces challenges in user experience and performance compared to its top-tier counterparts.
For a professional tracking Claude Code, Cursor, Codex, and similar AI coding tools, the most actionable takeaway is the launch of the Kimi K3 model by Moonshot AI. Kimi K3 boasts 2.8 trillion parameters and promises open weights by July 27, 2026, positioning itself as a significant open model with high capabilities in agentic and self-evolving coding workflows. This model could offer a competitive edge in long-horizon coding tasks and AI development environments, potentially impacting future AI productivity and workflow strategies.