April 2026: The Biggest Month Ever for Open-Source AI
Gemma 4, Llama 4 Scout + Maverick, GLM-5.1, MiniMax M2.7, vLLM v0.19, and more all dropped inside 12 days. Here’s what it means.
GLM-5.1
GLM-5.1 Review: China’s Open-Source AI That Topped the Leaderboard
Z.ai’s GLM-5.1 scored 58.4 on SWE-Bench Pro, beating GPT-5.4 and Claude Opus 4.6. It’s free, open-source, and built entirely on Chinese hardware.