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.Net: gpt-image-1 is the default image model in the .NET OpenAI connector, and OpenAI shuts it down on October 23

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@nightcityblade is already working on this.

Since Oct 3, 2026.

  • #14530 by @nightcityblade — open

Assessment

Difficulty
2/5
Estimated time
1-3 hours
Newbie friendliness
73/100
Issue type
Bug
Clarity
Mostly clear
Activity status
Active
Tech stack
csharp
Domain
ai, backend

Research direction

Read the two reported fallbacks in Services/OpenAITextToImageService.cs:39 and Core/ClientCore.TextToImage.cs:44, then verify the provider's deprecation notice. Check how the .NET connector selects default image models and run the relevant tests. Done when its defaults no longer name the model scheduled for shutdown and the tests pass.

Written by the indexing model from the issue text.

Description

.NET triage

Hi, quick heads-up in case this isn't already on your radar.

OpenAI shuts down gpt-image-1 on October 23, 2026, three weeks from now. After that, requests that name it fail. OpenAI's replacement is gpt-image-2.

The .NET OpenAI connector uses it as the default image model when the caller doesn't pass a model id, so anyone generating images with the defaults would start getting errors on that date:

It's still there on the default branch as of October 2. OpenAI's notice is on their deprecations page.

How I found it: I maintain DocsWatcher, an open source scanner that checks code against the deprecation notices providers publish, and I run it over popular open source repositories. Most of what it turns up is model names sitting in lists and price tables, which don't break anything, so I read every hit in real code myself before opening anything. This one looked like a real call to me, but you know your code and I don't, so if I've got it wrong just say so and I'll close this.

Nothing to adopt here. I just thought you'd want to know.

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