# Unable to spawn Grok 4.7 and Gemini 3.8 Flash subagents **URL:** \ **Category:** Bug Reports\ **Tags:** gemini, subagents, grok\ **Created:** [September 28, 2026, 10:17am UTC](https://forum.cursor.com/t/unable-to-spawn-grok-4-7-and-gemini-3-8-flash-subagents/173203 "2026-09-28T10:17:57Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![kir](https://sea3.discourse-cdn.com/cursor1/user_avatar/forum.cursor.com/kir/32/122089_2.png) [@kir](https://forum.cursor.com/u/kir)\ **Post date:** [September 28, 2026, 10:17am UTC](https://forum.cursor.com/t/unable-to-spawn-grok-4-7-and-gemini-3-8-flash-subagents/173203/1 "2026-09-28T10:17:57Z")
### Where does the bug appear (feature/product)? Cursor IDE ### Describe the Bug I’m unable to spawn subagents with either Grok 4.7 or Gemini 3.8 Flash — it always falls back to `auto` without asking anything. And it’s not only a UI badge — the underlying model is clearly Composer. However it works fine with Grok 4.6 and Opus 5.5. I have the quota for sure, the models are in “allowlist” and can run direct chat sessions with the mentioned models without any problems. But it doesn’t work when using the Task() tool. ### Steps to Reproduce Spawn a subagent with either Grok 4.7 or Gemini 3.8 Flash model, using explicit model slug directly or specified in `.cursor/agents/test.md` frontmatter — doesn’t matter since it doesn’t work as expected in both cases. ### Expected Behavior The specified model is always respected. ### Operating System MacOS ### Version Information Version: 3.20.21 VS Code Extension API: 1.128.0 Commit: f09fca384ceca23f7bf21f9c23655b162641d740 Date: 2026-09-13T19:02:51.781Z Layout: IDE Build Type: Stable Release Track: Default Electron: 42.10.0 Chromium: 148.0.7778.280 Node.js: 24.18.1 V8: 14.8.178.38-electron.0 xterm.js: 6.1.0-beta.291 OS: Darwin arm64 25.6.0 ### Does this stop you from using Cursor Yes - Cursor is unusable ---
**Author:** ![Colin](https://sea3.discourse-cdn.com/cursor1/user_avatar/forum.cursor.com/colin/32/90452_2.png) [@Colin](https://forum.cursor.com/u/Colin)\ **Post date:** [September 28, 2026, 1:23pm UTC](https://forum.cursor.com/t/unable-to-spawn-grok-4-7-and-gemini-3-8-flash-subagents/173203/6 "2026-09-28T13:23:57Z")
Hey @kir, thanks for the report! This is a known issue we’re already tracking, and I’ve added your report to it. Right now, local subagents set to Grok 4.7 or Gemini 3.8 Flash get started on Auto instead, whether the model comes from the Task call or from an agent file’s frontmatter. Opus 5.5 and Grok 4.6 aren’t affected, which matches what you’re seeing. In the meantime, pinning subagents to Grok 4.6 keeps the model you picked (for example `model: cursor-grok-4.6-high` in your `.cursor/agents/test.md` frontmatter). Leaving the model unset so it inherits from a Grok 4.7 chat doesn’t help, since that path is affected too. Subagents in Cloud Agents also aren’t affected, if that works for your task. ---
**Author:** ![kir](https://sea3.discourse-cdn.com/cursor1/user_avatar/forum.cursor.com/kir/32/122089_2.png) [@kir](https://forum.cursor.com/u/kir)\ **Post date:** [September 29, 2026, 10:33am UTC](https://forum.cursor.com/t/unable-to-spawn-grok-4-7-and-gemini-3-8-flash-subagents/173203/8 "2026-09-29T10:33:52Z")
@Colin Hi! I have the same issue with the newest Claude Sonnet 5.5 on the latest Cursor 3.22.12. Looks like all new models are problematic in this regard except Claude Opus 5.5. ---
**Author:** ![Colin](https://sea3.discourse-cdn.com/cursor1/user_avatar/forum.cursor.com/colin/32/90452_2.png) [@Colin](https://forum.cursor.com/u/Colin)\ **Post date:** [October 1, 2026, 12:03am UTC](https://forum.cursor.com/t/unable-to-spawn-grok-4-7-and-gemini-3-8-flash-subagents/173203/10 "2026-10-01T00:03:52Z")
Hey @kir, This has been addressed on our side and will be rolled out soon if it hasn’t been already. The change covers subagents set to Grok 4.7, Gemini 3.8 Flash, and Claude Sonnet 5.5 starting on Auto instead of the model you picked, so it should take care of the Sonnet 5.5 case you mentioned too. No app update should be needed for this one (a restart of Cursor is worth a try if it doesn’t kick in right away). Could you give it another try and let me know if your subagents still fall back to Auto? ---
**Author:** ![Tom\_Coustols](https://sea3.discourse-cdn.com/cursor1/user_avatar/forum.cursor.com/tom_coustols/32/97175_2.png) [@Tom\_Coustols](https://forum.cursor.com/u/Tom_Coustols)\ **Post date:** [October 1, 2026, 1:57am UTC](https://forum.cursor.com/t/unable-to-spawn-grok-4-7-and-gemini-3-8-flash-subagents/173203/11 "2026-10-01T01:57:51Z")
Hey @Colin, long time no see! thanks for this update, I was in fact coming to check if this was adressed or not, I will try it right now and tell you about the results! ---
**Author:** ![Tom\_Coustols](https://sea3.discourse-cdn.com/cursor1/user_avatar/forum.cursor.com/tom_coustols/32/97175_2.png) [@Tom\_Coustols](https://forum.cursor.com/u/Tom_Coustols)\ **Post date:** [October 1, 2026, 2:04am UTC](https://forum.cursor.com/t/unable-to-spawn-grok-4-7-and-gemini-3-8-flash-subagents/173203/12 "2026-10-01T02:04:16Z")
yup, seems all fixed! ![image](https://us1.discourse-cdn.com/cursor1/original/3X/0/3/03f93b9a7d6a92184f75b27502a0123852f04597.png) ---
**Author:** ![system](https://sea3.discourse-cdn.com/cursor1/user_avatar/forum.cursor.com/system/32/99069_2.png) [@system](https://forum.cursor.com/u/system)\ **Post date:** [October 3, 2026, 2:04am UTC](https://forum.cursor.com/t/unable-to-spawn-grok-4-7-and-gemini-3-8-flash-subagents/173203/13 "2026-10-03T02:04:33Z")
This topic was automatically closed 2 days after the last reply. New replies are no longer allowed.