Custom model name rejected

“However, when I select the custom model in Cursor's native Agent chat, Cursor rejects its identifier.”

Is this your bug? What gets counted gets fixed. Pile on.

Paste this into your agent. It files your report, with your error and version.

I hit this bug: rapsheet.dev/sheets/cursor/issues/7581/file
Follow it to file my report. Show me the text before you send.

No install. No account. Public and anonymous. The link asks your agent for one report, nothing else. What it sends

Growing. 2 reports in the last 7 days and none the week before.

Custom OpenAI-compatible models rejected as invalid model name. Selecting a model added via "Add Custom Model" with an overridden base URL fails in Agent chat, though curl works.

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File my report

Where: Agent chat
Error text: AI Model Not Found — Model name is not valid: "qwencoder30b"
Versions: 3.24.9 to 3.28.7
Platforms: macOS, Windows
How bad: Breaks a normal workflow. Some reports say it used to work. Some reports say it blocks them completely.

Not quite your bug?

Override breaks built-in models2 people
Custom model cannot be added with overridden OpenAI Base URL2 people

Original reports3, newest first

Nov 4, 2026Custom OpenAI-compatible Ollama model rejected by native Cursor Agent — "Model name is not valid" (3.28.7)#177311
Nov 4, 2026“Model name is not valid” error when using a custom OpenAI-compatible model#177245
Oct 8, 2026Custom DeepSeek model rejected by Cursor backend after previously working#174141

Custom model name rejected

Is this your bug? What gets counted gets fixed. Pile on.

Is this your bug?

Not quite your bug?

Original reports3, newest first

Do you work on Cursor?