Grok Build — September 2026 Releases
27 releases in September 2026.
What's new in Grok Build, September 2026
Grok Build adds Grok 4.7, GA memory, /context-window and smarter MCP and subagent handling
Grok Build's September 2026 releases brought Grok 4.7 (v1.0.40), general availability of memory (v1.0.34), and a new /context-window command for choosing a context window size per session (v1.0.44). Twenty-seven releases shipped, from v1.0.17 to v1.0.46.
MCP and subagents saw the most work. MCP tools can now request input mid-call, MCP results include structured JSON, and servers can read a rotating token file on every request. Subagents can always use the parent model, no longer require a type when spawned, and custom agents can be chosen directly with spawn_subagent. Other changes include Esc no longer cancelling a running turn (use Ctrl+C), a new grok worktree create command, macOS sandbox enforcement through Seatbelt (sandbox-exec), and a policy setting for organizations to disable hooks not from managed policy. The rest were fixes for the dashboard, pasting, minimal mode, Windows and syntax highlighting.
- Grok 4.7 is available in Grok Build (v1.0.40)
- Memory is now generally available, with a faster /memory modal and quicker delete (v1.0.34, v1.0.35)
- New /context-window command picks a context window size for the session; /model offers it before effort (v1.0.44)
- MCP tools can request input mid-call and resume when you answer (v1.0.17)
- Subagents no longer need a type, can use the parent model, and custom agents work with spawn_subagent (v1.0.39, v1.0.45)
- New grok worktree create command makes a managed worktree without an interactive session (v1.0.42)
Upgrading from v1.0.15? See every change through v1.0.46.
- v1.0.46 (September 30, 2026) — Grok Build 1.0.46 makes session startup dramatically faster when loading skills from large directories and fixes a frustrating issue where video cards
- v1.0.45 (September 29, 2026) — Grok Build 1.0.45 lets you spawn custom agents directly from your config and keeps rotating credentials fresh with token file re-reading. You'll also
- v1.0.44 (September 28, 2026) — Grok Build 1.0.44 gives you direct control over your AI's context window size mid-conversation, so you can balance depth against speed on the fly. We'
- v1.0.43 (September 27, 2026) — Grok Build 1.0.43 fixes a frustrating display issue so tool prompts now show up properly in minimal mode, plus you'll get notified if something goes u
- v1.0.42 (September 26, 2026) — Grok Build 1.0.42 now shows you exactly which model is actually running when using smart-auto, and the new worktree create command lets you set up man
- v1.0.41 (September 22, 2026) — Grok Build 1.0.41 makes your workflows smoother with better crash recovery that shows exactly what was lost and improved command palette access right
- v1.0.40 (September 20, 2026) — Grok Build 1.0.40 — Grok 4.7 has arrived!
- v1.0.39 (September 20, 2026) — Grok Build 1.0.39 makes subagents easier to use by removing the need to pick a type when spawning them, and fixes a frustrating issue where your image
- v1.0.38 (September 19, 2026) — Grok Build 1.0.38 now keeps your pasted images safe through edits and undo actions while letting you know if any can't be sent, and fixes frustrating
- v1.0.37 (September 18, 2026) — Grok Build 1.0.37 now handles large, complex flowcharts without breaking and fixes the context legend so percentages actually add up correctly. We've
- v1.0.36 (September 17, 2026) — Grok Build 1.0.36 brings better control over your workspace with a new dashboard preview toggle and stronger security policies for organizations manag
- v1.0.34 (September 16, 2026) — Grok Build 1.0.34 brings memory functionality out of beta, letting you retain context across conversations, while markdown headings now display with p
- v1.0.35 (September 16, 2026) — Grok Build 1.0.35 makes copying and pasting work reliably without adding unwanted blank lines or breaking your code, while also speeding up syntax hig
- v1.0.33 (September 15, 2026) — Grok Build 1.0.33 now displays structured data from MCP tools in a cleaner format and fixes a frustrating macOS bug where pasting images would attach
- v1.0.32 (September 14, 2026) — Grok Build 1.0.32 now shows your latest plugins and skills immediately without waiting for a session to start, and we've fixed stability issues on Win
- v1.0.31 (September 13, 2026) — Grok Build 1.0.31 makes it easier to track your subagent progress and navigate long file paths with clearer labels and smarter display. We've also fix
- v1.0.30 (September 11, 2026) — Grok Build 1.0.30 makes tracking your work easier with a streamlined session header and smarter time displays that now roll into hours. You'll also se
- v1.0.25 (September 9, 2026) — Grok Build 1.0.25 brings cleaner feedback with silent successful hooks and smarter navigation using Vim-mode shortcuts, while also fixing critical iss
- v1.0.24 (September 7, 2026) — Grok Build 1.0.24 makes it easier to stop actions with the keyboard shortcut Ctrl+C, while Esc now gives you a helpful reminder instead of interruptin
- v1.0.23 (September 7, 2026) — Grok Build 1.0.23 fixes a frustrating problem: URLs and emails in tables now stay fully clickable even when text wraps to multiple lines. This small c
- v1.0.22 (September 7, 2026) — Grok Build 1.0.22 makes file editing safer by showing real line numbers and letting you review changes before they happen, while improving how subagen
- v1.0.21 (September 4, 2026) — Grok Build 1.0.21 fixes frustrating duplicate session issues when you're working on the welcome screen, and keeps your permission settings exactly whe
- v1.0.20 (September 4, 2026) — Grok Build 1.0.20 is here with smoother conversations—your chat history now stays in view when you send messages instead of jumping around. We've also
- v1.0.19 (September 4, 2026) — Grok Build 1.0.19 makes background tasks truly invisible—scheduled loops no longer interrupt your conversation flow—while improving reliability across
- v1.0.18 (September 2, 2026) — Grok Build 1.0.18 makes quoting messages seamless directly from the viewer and introduces interactive charts that models can render natively. We've al
- v1.0.17 (September 1, 2026) — Grok Build 1.0.17 now lets MCP tools pause and ask for your input mid-call, making complex workflows smoother. Plus, ghost suggestions got smarter and
- v1.0.16 (September 1, 2026) — Grok Build 1.0.16 protects your work by saving progress even when network hiccups cause token timeouts, and gives long-running tasks a full hour to co