Grok Build v1.0.1 just landed with a serious upgrade, bringing safer multi-agent scaling, smarter session management, expanded video generation, stronger reliability, and major performance gains for large-scale development Release Notes: v1.0.1 Breaking Changes: • /rewind now only truncates conversation history instead of files as well and asks for confirmation by default. • Managed MCP servers are now only available through the gateway catalog. Features: • Subagent spawning is now bounded; wide fan-outs queue instead of exhausting file descriptors. • New `grok du` command shows disk usage of ~/.grok including worktrees and sessions. • Tools now report whether they only read data, enabling safer restricted agents and subagents. • Sandbox workspace sessions can now limit which bundled skills are advertised via caller config. • Renaming a session from the dashboard now starts with the current title prefilled for easy editing. • /usage, /session-info, and /context now open in a tabbed modal instead of adding text to the conversation. • grok trace exports now bundle memory trace files for easier debugging. • Session rename now enforces a 100-character limit, ghost-prefills the current title, and preserves manual titles across machines. • New `/rename --auto` command unpins a manual session title so automatic titling resumes. • Video generation from references now supports preset voices, single-image input, 1–15 s durations, and 4:3 / 3:4 aspect ratios. Bug Fixes: • Sandbox config entries ending in /** now correctly grant the parent directory instead of creating a literal ** subdirectory. • Failed alpha/enterprise updates now suggest the matching GROK_CHANNEL reinstall command. • On Apple Silicon, grok now installs the native arm64 build even from a Rosetta shell or x86_64 updater. • Skills that share names with built-in commands now appear alongside them in the slash menu with qualified names. • Notebook permission rules imported from Claude configs are now ignored with a warning instead of applying broadly. • Goal evaluation at round end no longer fails due to timeouts. • Tool timeouts no longer cause the agent to hang when child processes are stuck in D-state or hold pipes open. • Home and End keys now move to the start or end of the current logical line even when the prompt is wrapped. • Worktree sessions now correctly show their branch in the status bar. • Worktree sessions now keep their status correctly when switching directories or resuming. • Worktree status is no longer lost when opening the dashboard. • Recaps are now written in the same language as your conversation. • Plugin suggestions no longer flash incorrectly while typing. • Send Now now works during active goals without cancelling the goal. • Headless sessions now correctly wait for MCP servers when using delivery tools. • Non-interactive sessions (`grok -p`) no longer fail when the agent asks for user input or plan approval. • read_file errors for missing skills now suggest the correct registered path instead of a generic hint. • Session load and creation can no longer freeze forever when `.envrc` evaluation blocks. • Upgraded installs no longer silently run outdated platform skill instructions. • Deleting a session now properly stops and waits for any running subagents before wiping history. • Permission and plan-approval notification hooks no longer fire on auto-allowed tools. • Mid-turn steering sent with double-Enter or Ctrl+Enter now correctly tells the model it arrived while work was in progress. • Scrollback drag selection no longer gets stuck after the mouse button is released outside VS Code or Cursor terminals. • Video generation tools now show a clear error explaining ZDR storage requirements instead of silently disappearing. • Esc on the cancel-turn panel now closes the panel and keeps the current turn running as the shortcuts bar indicates. Performance: • Git status and diff operations no longer cause high CPU or memory use on large repositories. • Large git histories no longer cause excessive memory use or unresponsiveness. • History search no longer leaks background threads in long sessions with many subagents. • Resuming large sessions is now significantly faster and the UI no longer shows an incomplete transcript while replay is still applying.