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The open-weight GLM-5.2 model is the first to crack into top-tier coding agent performance alongside Anthropic and OpenAI's best — and it landed right after the U.S. effectively banned Claude Fable 5.
The UK's AI Security Institute reports that open-weight models like GLM-5.2 and DeepSeek V4-Pro now match the cyber capabilities of closed frontier models from just four to seven months ago — down from a six-to-ten-month gap at the start of 2025.
Moonshot AI's Kimi K3 is the largest open-weight model released yet — 2.8T parameters, a 1M-token context, and $3/$15 pricing. Here's how it benchmarks against Opus 4.8, GPT-5.6, and Grok 4.5, plus how to use it and when open weights land.