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](https://github.com/zed-industries/zed/pull/63248); thanks [thibaudgg](https://github.com/thibaudgg))
- Added the `agent.prevent_idle_sleep` setting, enabled by default, to prevent idle system sleep while agent threads are running. ([#53130](https://github.com/zed-industries/zed/pull/53130); thanks [cppcoffee](https://github.com/cppcoffee))
- Added support for DeepSeek Flash 4.1. ([#64014](https://github.com/zed-industries/zed/pull/64014); thanks [cppcoffee](https://github.com/cppcoffee))
- Added the `agent.threads_sidebar_default_width` setting to configure the width of the Threads Sidebar. ([#62883](https://github.com/zed-industries/zed/pull/62883); thanks [porada](https://github.com/porada))
- Added the `agent: rename selected thread` action for renaming the active Terminal Thread from the Agent Panel. ([#63660](https://github.com/zed-industries/zed/pull/63660); thanks [mauriciord](https://github.com/mauriciord))
- Added BYOK support for Claude Opus 5.5 with an Anthropic API key. ([#64627](https://github.com/zed-industries/zed/pull/64627))
- Added BYOK support for GPT-6 Sol and GPT-6 Luna with an OpenAI API key. ([#64628](https://github.com/zed-industries/zed/pull/64628))
- Added BYOK support for GPT-6 Astra with an OpenAI API key. ([#64420](https://github.com/zed-industries/zed/pull/64420))
- Added Z.ai GLM to the Mistral provider. ([#63535](https://github.com/zed-industries/zed/pull/63535); thanks [ummon-v](https://github.com/ummon-v))
- Improved ACP compatibility and async task wakeup handling. ([#64077](https://github.com/zed-industries/zed/pull/64077))

### Git

- Added `Cut`, `Copy`, and `Paste` context menu actions to the commit message editor. ([#64142](https://github.com/zed-industries/zed/pull/64142); thanks [hooch](https://github.com/hooch))

### Languages

- Added a language server command picker and support for language servers to open files and URLs with `showDocument` requests. ([#63607](https://github.com/zed-industries/zed/pull/63607))
- Added a prompt to install the Emmet extension when opening files in Emmet-supported languages. ([#63750](https://github.com/zed-industries/zed/pull/63750))
- Added support for running language-server actions directly from actionable inlay hints. ([#63605](https://github.com/zed-industries/zed/pull/63605))
- Improved rendering performance for Markdown code blocks in the Agent Panel, hover popovers, and Markdown preview. ([#63138](https://github.com/zed-industries/zed/pull/63138))
- Improved development extension compilation by automatically replacing outdated WASI SDK installations. ([#63816](https://github.com/zed-industries/zed/pull/63816); thanks [jkbz64](https://github.com/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](https://github.com/zed-industries/zed/pull/63961); thanks [UdeshyaDhungana](https://github.com/UdeshyaDhungana))
- Added `editor.code_lens.foreground` for customizing CodeLens text independently. ([#64084](https://github.com/zed-industries/zed/pull/64084); thanks [giorgiopogliani](https://github.com/giorgiopogliani))
- Added support for `"..."` in `read_only_files` so project settings can extend inherited read-only patterns. ([#64222](https://github.com/zed-industries/zed/pull/64222); thanks [porada](https://github.com/porada))
- Added `menu` (Linux and Windows) and `shift-f10` (all platforms) shortcuts to open the context menu for the selected Project Panel entry. ([#46744](https://github.com/zed-industries/zed/pull/46744); thanks [CCXLV](https://github.com/CCXLV))
- Improved editor rendering performance in syntax-highlighted files, especially with the minimap enabled. ([#63145](https://github.com/zed-industries/zed/pull/63145))

## Bug Fixes

- Fixed a bug where folders remained highlighted after they stopped being dragged. ([#64038](https://github.com/zed-industries/zed/pull/64038); thanks [tidely](https://github.com/tidely))
- Fixed the macOS traffic light animation when exiting fullscreen. ([#64339](https://github.com/zed-industries/zed/pull/64339); thanks [tidely](https://github.com/tidely))
- Fixed a bug where restored macOS windows reopened on the currently active Space instead of their original Space. ([#58886](https://github.com/zed-industries/zed/pull/58886); thanks [tnayuki](https://github.com/tnayuki))
- Fixed auto-compaction thresholds for GitHub Copilot models with a prompt limit below their context window. ([#64195](https://github.com/zed-industries/zed/pull/64195))
- Fixed the Inline Assistant failing to select an available fallback model when no default model was configured. ([#63963](https://github.com/zed-industries/zed/pull/63963); thanks [hferreiro](https://github.com/hferreiro))
- Fixed a bug on macOS where moving the pointer over another app could trigger hover effects in a Zed window underneath it. ([#64234](https://github.com/zed-industries/zed/pull/64234))
- Fixed a bug where deleted files appeared outside the file tree in the Outline Panel when viewing a diff. ([#63570](https://github.com/zed-industries/zed/pull/63570); thanks [FrantisekGazo](https://github.com/FrantisekGazo))
- Fixed a crash during Python interpreter discovery when an executable emitted non-UTF-8 output. ([#64040](https://github.com/zed-industries/zed/pull/64040))
- Fixed a crash when pasting in an expanded deleted diff hunk in Helix mode. ([#64245](https://github.com/zed-industries/zed/pull/64245))
- Fixed a Linux startup crash when local XKB keyboard-definition files were unavailable. ([#64113](https://github.com/zed-industries/zed/pull/64113))
- Fixed Anthropic credit exhaustion being classified as a malformed request instead of a payment issue. ([#63988](https://github.com/zed-industries/zed/pull/63988))
- Fixed canceled external file drags on Linux Wayland sometimes remaining active and causing later clicks to copy the dragged file. ([#64122](https://github.com/zed-industries/zed/pull/64122); thanks [itsfuad](https://github.com/itsfuad))
- Fixed compilation of development extensions on Windows ARM64. ([#63816](https://github.com/zed-industries/zed/pull/63816); thanks [jkbz64](https://github.com/jkbz64))
- Fixed compilation of development extensions with large Tree-sitter grammars. ([#63816](https://github.com/zed-industries/zed/pull/63816); thanks [jkbz64](https://github.com/jkbz64))
- Fixed data-retention consent checks for hosted counting and compaction requests. ([#64194](https://github.com/zed-industries/zed/pull/64194))
- Fixed diff statistics to use the theme's version-control colors for added and deleted line counts. ([#64083](https://github.com/zed-industries/zed/pull/64083); thanks [kvechkanov](https://github.com/kvechkanov))
- Fixed font suggestions listing unavailable fallback fonts and internal font aliases. ([#64095](https://github.com/zed-industries/zed/pull/64095))
- Fixed intermittent "database is locked" errors when sharing a database across Zed instances. ([#63923](https://github.com/zed-industries/zed/pull/63923); thanks [whitecat1331](https://github.com/whitecat1331))
- Fixed Ollama being unable to access images returned by tool calls. ([#64121](https://github.com/zed-industries/zed/pull/64121); thanks [marius851000](https://github.com/marius851000))
- Fixed Python decorator syntax highlighting conflicting with the matrix multiplication operator. ([#58077](https://github.com/zed-industries/zed/pull/58077); thanks [allachance](https://github.com/allachance))
- Fixed remote server removal prompts not capturing keyboard focus. ([#60965](https://github.com/zed-industries/zed/pull/60965); thanks [cfiq](https://github.com/cfiq))
- Fixed terminal tool output in the Agent Panel to consistently use the theme's `terminal.background` color. ([#64163](https://github.com/zed-industries/zed/pull/64163); thanks [chrisdrackett](https://github.com/chrisdrackett))
- Fixed the gutter tooltip's modifier-click hint after holding Command. ([#64124](https://github.com/zed-industries/zed/pull/64124); thanks [GautamBytes](https://github.com/GautamBytes))
- Fixed the Project Panel failing to scroll to collapsed parent folders. ([#64207](https://github.com/zed-industries/zed/pull/64207))
- Fixed a crash when typing into an empty side of a merge conflict. ([#64604](https://github.com/zed-industries/zed/pull/64604))
- Fixed newly available ChatGPT subscription models not appearing in the model picker. ([#64625](https://github.com/zed-industries/zed/pull/64625))
- Fixed the Git Panel unexpectedly switching repositories when viewing changes in multi-repository projects. ([#58795](https://github.com/zed-industries/zed/pull/58795); thanks [mengh04](https://github.com/mengh04))
- Fixed deleted Git gutter markers disappearing at narrow custom widths. ([#64469](https://github.com/zed-industries/zed/pull/64469); thanks [rajin-khan](https://github.com/rajin-khan))
- Fixed a bug where a project root folder could not be renamed to match a child folder. ([#64268](https://github.com/zed-industries/zed/pull/64268); thanks [D4r3NPo](https://github.com/D4r3NPo))
- Fixed the thinking toggle for Mistral Small and Medium. ([#63535](https://github.com/zed-industries/zed/pull/63535); thanks [ummon-v](https://github.com/ummon-v))