Zed 1.21.0 adds SuperGrok sign-in for Grok model access in the Agent Panel. Support for DeepSeek Flash 4.1, Claude Opus 5.5, GPT-6 Sol, GPT-6 Luna, and GPT-6 Astra is now available with your own API keys. Z.ai GLM joins the Mistral provider. Language servers can now open files and URLs, and you can run language-server actions directly from inlay hints.