Where does the bug appear (feature/product)?
Cursor IDE
Describe the Bug
gpt model This model does not support custom API keys.
Steps to Reproduce
set apikey and url
Operating System
Windows 10/11
Version Information
Version: 3.13.25 (system setup)
VS Code Extension API: 1.128.0
Commit: 31e8d61c448c7472e371505838a0fe34083dad50
Date: 2026-07-28T06:17:45.069Z
Layout: IDE
Build Type: Stable
Release Track: Default
Electron: 40.10.3
Chromium: 144.0.7559.236
Node.js: 24.15.0
V8: 14.4.258.32-electron.0
xterm.js: 6.1.0-beta.256
OS: Windows_NT x64 10.0.26200
For AI issues: which model did you use?
gpt 5.6 sol and more gpt model
For AI issues: add Request ID with privacy disabled
Request ID: ff72f3b0-a2ad-4754-98ec-956d2ed7ec64
{“error”:“ERROR_BAD_REQUEST”,“details”:{“title”:“Bad Request”,“detail”:“This model does not support custom API keys.”,“isRetryable”:false,“additionalInfo”:{},“buttons”:,“planChoices”:,“analyticsMetadata”:{“actionRequired”:“config”}},“isExpected”:true}
Bad Request This model does not support custom API keys.
ActionRequiredError: Bad Request This model does not support custom API keys.
at Ydb (vscode-file://vscode-app/c:/Program%20Files/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:9462:6448)
at PIr (vscode-file://vscode-app/c:/Program%20Files/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:9462:5416)
at cMm (vscode-file://vscode-app/c:/Program%20Files/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:9463:12870)
at Object.classify (vscode-file://vscode-app/c:/Program%20Files/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:9463:17484)
at shb (vscode-file://vscode-app/c:/Program%20Files/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:9463:5856)
at async g4a.runWithSharedTurnRunner (vscode-file://vscode-app/c:/Program%20Files/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:9463:16836)
at async Nq.runAgentLoop (vscode-file://vscode-app/c:/Program%20Files/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:12161:24049)
at async p0l.streamFromAgentBackend (vscode-file://vscode-app/c:/Program%20Files/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:18433:15130)
at async p0l.getAgentStreamResponse (vscode-file://vscode-app/c:/Program%20Files/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:18433:24972)
at async W5e.submitChatMaybeAbortCurrent (vscode-file://vscode-app/c:/Program%20Files/cursor/resources/app/out/vs/workbench/workbench.desktop.main.js:9627:2511)
Does this stop you from using Cursor
No - Cursor works, but with this issue