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Grok Build was announced by @elonmusk on 2026-08-07 as now powered by Grok 4.5…

Brief

Grok Build (announced 2026-08-07) now runs on Grok 4.5 and reached v1.0.0 after 100+ updates in ~10 weeks. The release emphasizes developer UX (dashboard summaries, extensions modal, Plan Mode, mouse and terminal UI), safer permission handling (expandable full-script prompts), numerous bug fixes (image handling, sandboxing, login, tab/esc behavior) and memory/performance gains.

Why it matters

Grok Build was announced by @elonmusk on 2026-08-07 as now powered by Grok 4.5 and adds a native subagent view, Plan Mode integration, mouse support, and a fullscreen terminal UI; installer available via curl -fsSL https://x.ai/cli/inst...

Key details

  • Grok Build hit v1.0.0 after 100+ updates in just over 10 weeks (per X Freeze), delivering UX and reliability changes: dashboard rows summarize previous turns, extensions modal groups alphabetically with collapsible Skills, permission prompts show full scripts (long bash bodies expand with Ctrl-F), auto-theme detection over SSH/tmux, many bug fixes, and performance improvements (reduced memory for forking large sessions; instant exit of empty sessions)
Source evidence

Try Grok Build

X.ai/build

Link

Grok Build

Grok Build is now powered by Grok 4.5, our new model — with a native subagent view, Plan Mode integration, mouse support, and a fullscreen terminal UI. Install with curl -fsSL https://x.ai/cli/inst...
x.ai

X Freeze (@XFreeze)

Grok Build officially reaches v1.0.0, rapidly becoming one of the most powerful coding harnesses in the world

After 100+ updates in just over 10 weeks, SpaceXAI’s coding agent has hit a major milestone.......with a smarter dashboard, a more polished developer experience, stronger reliability, safer permission handling, and meaningful performance improvements across the platform

The pace at which SpaceXAI is shipping Grok Build is totally insane

Release Notes: v1.0.0

Features:
• Dashboard rows show a short summary of what the agent did in the previous turn
• Extensions modal groups items alphabetically with collapsible Skills sections
• Grok skips the project-directory prompt when launched from home or other non-project directories
/feedback opens a dedicated report box instead of prompt mode
• Auto theme detection works over SSH and inside tmux
• Markdown tables reflow inside cells on narrow panes instead of clipping
• Permission prompts show the complete script; long bash bodies expand with Ctrl-F

Bug Fixes:
• MCP tools that return images no longer drop or corrupt large screenshots
• Sandboxed Grok starts on large directories with many deny-glob matches
• Rapid send-now presses no longer lose earlier queued messages
• Esc and stop prevent background tasks from restarting the model after cancel
• Login no longer skips when an invalid API key is in the environment
• Model picker and command palette work while reviewing a plan
• Tab and Esc behave consistently on question, permission, and cancel-turn cards
/new from the dashboard returns to the dashboard from an empty prompt
• Codebase restore no longer hangs on large or shallow git repositories
• Remote resume restores conversation only unless --restore-code is passed
• Copying CJK text with the mouse includes every character at the selection edges
• API errors appear as clean banners instead of raw JSON dumps
• Typing exit or quit in the dashboard exits the CLI
• Mode indicator (plan/agent/ask) stays in sync after resume and mode changes
/delete returns to the dashboard when you delete a session opened from it
• Enter in the slash command menu runs the highlighted command
• Grok retries more server errors during outages
• Session-only slash commands show a message when used from the dashboard
• Queued prompts stay visible while waiting on subagents, and slash/image rows can be reordered
• Auto recaps no longer appear mid-turn or while busy
/btw error messages wrap fully

Performance:
• Forking very large sessions no longer uses many times the session file size in memory
• Exiting an empty session is instant, even on slow networks

— https://nitter.net/XFreeze/status/2085594014481359104#m