Zed AI v1.21.0

This week's release includes faster rendering in syntax-highlighted files and Markdown code blocks, a language server command picker, a setting that keeps your system awake during long-running agent turns, and BYOK support for Claude Opus 5.5 (Anthropic) and GPT-6 Astra, Sol, and Luna (OpenAI).

Features

AI

• Added SuperGrok sign-in so SuperGrok subscribers can use Grok models in the Agent Panel. (#63248; thanks thibaudgg)

• Added the agent.prevent_idle_sleep setting, enabled by default, to prevent idle system sleep while agent threads are running. (#53130; thanks cppcoffee)

• Added support for DeepSeek Flash 4.1. (#64014; thanks cppcoffee)

• Added the agent.threads_sidebar_default_width setting to configure the width of the Threads Sidebar. (#62883; thanks porada)

• Added the agent: rename selected thread action for renaming the active Terminal Thread from the Agent Panel. (#63660; thanks mauriciord)

• Added BYOK support for Claude Opus 5.5 with an Anthropic API key. (#64627)

• Added BYOK support for GPT-6 Sol and GPT-6 Luna with an OpenAI API key. (#64628)

• Added BYOK support for GPT-6 Astra with an OpenAI API key. (#64420)

• Added Z.ai GLM to the Mistral provider. (#63535; thanks ummon-v)

• Improved ACP compatibility and async task wakeup handling. (#64077)

Git

• Added Cut, Copy, and Paste context menu actions to the commit message editor. (#64142; thanks hooch)

Languages

• Added a language server command picker and support for language servers to open files and URLs with showDocument requests. (#63607)

• Added a prompt to install the Emmet extension when opening files in Emmet-supported languages. (#63750)

• Added support for running language-server actions directly from actionable inlay hints. (#63605)

• Improved rendering performance for Markdown code blocks in the Agent Panel, hover popovers, and Markdown preview. (#63138)

• Improved development extension compilation by automatically replacing outdated WASI SDK installations. (#63816; thanks jkbz64)

Other

• Added a comment_empty_lines parameter to the editor::ToggleComments keybinding action for multiline selections. Set it to true to comment blank lines or false to skip them; Zed's default keymap now uses true, while the VS Code keymap uses false. (#63961; thanks UdeshyaDhungana)

• Added editor.code_lens.foreground for customizing CodeLens text independently. (#64084; thanks giorgiopogliani)

• Added support for "..." in read_only_files so project settings can extend inherited read-only patterns. (#64222; thanks porada)

• Added menu (Linux and Windows) and shift-f10 (all platforms) shortcuts to open the context menu for the selected Project Panel entry. (#46744; thanks CCXLV)

• Improved editor rendering performance in syntax-highlighted files, especially with the minimap enabled. (#63145)

Bug Fixes

• Fixed a bug where folders remained highlighted after they stopped being dragged. (#64038; thanks tidely)

• Fixed the macOS traffic light animation when exiting fullscreen. (#64339; thanks tidely)

• Fixed a bug where restored macOS windows reopened on the currently active Space instead of their original Space. (#58886; thanks tnayuki)

• Fixed auto-compaction thresholds for GitHub Copilot models with a prompt limit below their context window. (#64195)

• Fixed the Inline Assistant failing to select an available fallback model when no default model was configured. (#63963; thanks hferreiro)

• Fixed a bug on macOS where moving the pointer over another app could trigger hover effects in a Zed window underneath it. (#64234)

• Fixed a bug where deleted files appeared outside the file tree in the Outline Panel when viewing a diff. (#63570; thanks FrantisekGazo)

• Fixed a crash during Python interpreter discovery when an executable emitted non-UTF-8 output. (#64040)