I have the same issue now, ultra for business
Does this product have any type of support service? they simply do not care? (I have same issue for a week)
I think they just don’t care about paid users.
its server side issue
Unfortanetly this did not solve the problem for me 
I fixed the “Agent execution terminated due to error” loop on Windows by resetting the corrupted workspace state + extension host state. I had tried the usual steps for 3 days with no result, then I checked the logs and noticed my workspaceStorage ID + multiple extension-host/API-proposal errors.
What I did (worked for me)
Step 0 : Pull logs and find your workspaceStorage ID
-
In Antigravity: Ctrl + Shift + P → search “Log” → open logs / open logs folder
-
In the logs, look for the workspaceStorage folder name (a long hash like 49ac…)
Step 1 : Fully kill Antigravity (not just close the window)
-
Close Antigravity
-
Task Manager → End task:
-
Antigravity.exe
-
any Code.exe-like / Antigravity Helper / Extension Host processes
-
Step 2 : Clear the broken workspace state (use YOUR ID from the log)
Delete (or rename) this folder:
- %APPDATA%\Antigravity\User\workspaceStorage\<YOUR_WORKSPACE_ID>
Example (rename is safer):
- …\workspaceStorage\49ac31538b1cd55097d3afaa039c533c
→ 49ac31538b1cd55097d3afaa039c533c.bak
Step 3 : Clear global storage + cached agent/runtime state
Delete (or rename) these folders:
-
%APPDATA%\Antigravity\User\globalStorage\google.antigravity
-
%APPDATA%\Antigravity\CachedData
-
%APPDATA%\Antigravity\Cache
-
%APPDATA%\Antigravity\Code Cache
-
%APPDATA%\Antigravity\GPUCache
Step 4 : Remove user-installed extensions (clean re-download)
Delete (or rename):
- %USERPROFILE%\.antigravity\extensions
This mattered because my logs showed multiple extensions requesting unsupported/proposed VS Code APIs, which can destabilize the extension host and kill the agent.
Step 5 : Restart Antigravity
After restart, Antigravity rebuilt caches/extensions and the agent started working again.
I’m experiencing the same issue. I’ve tested this on both Ubuntu and Windows 11, and the result is the same everywhere. Only the chat with Claude Opus 4.5 works. Whenever I select a Google model, I always get the same error:
‘Agent terminated due to error. You can prompt the model to try again or start a new conversation if the error persists.’
I can’t get it to work at all. I have an active AI PRO plan.
I used another free account until I ran out of quota and went back the the ultra account which seems to be ok for now
Same error using free account, broken on even a fresh install on a separate computer, main PC antigravity workspace doesnt work right now with Agent execution error..
Tried a different account and it works. So it’s not related to the ide, it’s something I can’t related Google side. There is however no use of feedback as to what specifically it is.
Hey @Abhijit_Pramanik , just a heads up that many of us are still facing this issue on a regular basis, including myself. I have seen this issue about 20 times today. It seems to be able to continue for a short time, and then delivers that “agent execution terminated due to error” box.
Same issue on the Ultra plan for the last two days.
2026-01-21 13:24:11.841
[info] E0121 13:24:11.841210 52497 log.go:362] request failed: &{429 Too Many Requests 429 HTTP/1.1 ...}
It looks like an API rate limit, which is quite surprising - I haven’t used it heavily enough to reasonably hit any limits.
A savior on Reddit suggested disabling all MCP servers and trying again. I tried it, and it worked like magic.
after 5 days, same error comes up again:
request failed: &{429 Too Many Requests 429
getting the same issue. persists even when i change the model.
yup, same here!
I think the server is down!
yes! I can not load any model
Pro user: There was an unexpected issue setting up your account. Please try again later. - No models displayed previously.