AI Model Daily - 2026-06-18

2026-06-18 AI model news: GLM-5.2 is confirmed by Artificial Analysis as the leading open-weights model, Arena adds GLM-5.2 and Kimi-K2.7-Code agent signals, xAI releases Grok Imagine Video 1.5 and brings Grok 4.3 to Bedrock, and OpenAI publishes LifeSciBench.