Grok Build v0.2.51
Grok Build v0.2.51 was released on .
Summary
Grok Build 0.2.51 makes diagrams actually look like diagrams—Mermaid flowcharts and class structures now render properly instead of as raw code—while fixing critical memory leaks that could balloon your CLI usage. We've also streamlined the `grok mcp add` command with new shor...
Release Context
- This was the 43rd Grok Build release of 2026 tracked by Havoptic.
- It shipped the same day as Grok Build v0.2.50 (June 11, 2026).
Shipped around the same time
Within 3 days of this release, other AI coding tools also shipped:
- GitHub Copilot CLI v1.0.62 (June 13, 2026)
- Antigravity CLI v1.0.8 (June 12, 2026)
- Kiro CLI v2.7.0 (June 12, 2026)
- Claude Code v2.1.176 (June 12, 2026)
- Claude Code v2.1.175 (June 12, 2026)
Compare Grok Build: vs Claude Code · vs OpenAI Codex CLI · vs Cursor · vs Gemini CLI · vs Kiro CLI · vs GitHub Copilot CLI · vs Devin Desktop · vs Antigravity CLI
Release Notes
Grok Build 0.2.51
- grok mcp add now accepts positional arguments (e.g. grok mcp add filesystem -- npx ...), supports --scope project, and adds -e/-H flags for env/headers
- Mermaid flowcharts now render subgraph blocks as titled frames with correct internal and cross-boundary edges
- Class diagrams in Mermaid now render as proper UML boxes with attributes, methods and inheritance arrows instead of raw source
- Permission prompts now accept a double-click on an option to submit it, matching the existing Enter and number-key shortcuts
- New /code-review slash command now ships with the CLI and is always available
- Plan mode exit reminders no longer appear after the model has already started implementing the plan
- Expanded thinking blocks in scrollback now remain expanded when the agent finishes them
- grok update no longer downloads the same binary twice when multiple updaters or leader checks run concurrently
- Background task IDs after /compact are now shown verbatim so the model can reference them correctly in later tool calls
- Typing / while scrollback is focused now focuses the prompt and opens the slash-command dropdown
- Dashboard empty state is now a single hint line; dispatch and peek placeholders appear only when unfocused
- Fixed memory leaks that could cause the CLI to use tens of gigabytes during long sessions with many tool calls
- Login on SSH or headless machines now tells you when the browser cannot be opened automatically and shows the URL to visit manually
- Fixed git clone failures on Windows when the CLI tries to clone marketplace plugins into ~/.grok
- Large code blocks inside lists no longer cause multi-second UI stalls while streaming responses
Other Recent Grok Build Releases
- v1.0.13 (August 28, 2026)
- v1.0.12 (August 27, 2026)
- v1.0.11 (August 26, 2026)
- v1.0.10 (August 24, 2026)
- v1.0.9 (August 24, 2026)
All Grok Build releases · All AI coding tool releases on Havoptic