This week in The Batch, Andrew's Letter covers how open weights model GLM-5.3 nearly matched Claude Mythos at exploiting vulnerabilities, 12% vs. 14%.
Also inside:
🧪 Xiaomi's new open weights leader
🎙️ Gemini 3.8 Live
💾 DeepSeek-V4.1-Flash
🔁 AREX agents
🔗