WP 7.0 Connectors: No models found that support image_generation

[ecairol]

Immediately after generating an image with AI, the modal offers the option to Refine.

However, I keep getting the error No models found that support image_generation for this prompt. after trying to refine the image that was just generated.

Steps to Reproduce

1. Go to Settings > Connectors and add a valid API key for OpenAI
2. Create a New Post and add an Image Block
3. Click on "Generate Image" and type in a prompt
4. After the image is created, click on Refine Image
5. Type in a prompt for the image refinement

Expected
The image should be updated.

Actual
The site throws an error saying there are no models that support image generation.

[JeffPaul]

Similar to #64917, we should ensure there's better direction for a user on how to resolve this issue. Perhaps something as noted in https://core.trac.wordpress.org/ticket/64917#comment:5:

This requires an AI provider that supports <capability-name>, but none are active. Please go to the Connectors settings page and enable an appropriate provider.

Separately, this is something we've wrestled with in the ​AI plugin and whether we should disable feature/experiment availability if a corresponding provider+model-capability is not available. However if someone has this working as expected and then runs out of tokens/credits or there's an issue with a provider's API, then we run into the same problem. Curious for folks' input on most optimal way to handle for various scenarios here.

[kapilpaul]

When I am trying to generate an image it's giving me an error like this.

[iamadisingh]

After investigating, I think this is more likely a plugin capability/declaration issue. With Gemini image refinement works fine. With OpenAI, the error shown is "No models found that support image_generation for this prompt," that suggests this is likely a plugin capability-mapping issue. The current error, “No models found that support image_generation for this prompt,” is probably happening because OpenAI provider still advertises GPT image models with text-only input.

[audrasjb]

Removing trunk version as this is not going to be shipped with WP 7.0 but in the next releases.