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[GH-ISSUE #20423] issue: gpt-image-1.5 does not work via Azure #34711

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opened 2026-04-25 08:48:49 -05:00 by GiteaMirror · 2 comments
GiteaMirror commented 2026-04-25 08:48:49 -05:00
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Originally created by @rutgers-master on GitHub (Jan 6, 2026).
Original GitHub issue: https://github.com/open-webui/open-webui/issues/20423

Check Existing Issues

  • I have searched for any existing and/or related issues.
  • I have searched for any existing and/or related discussions.
  • I have also searched in the CLOSED issues AND CLOSED discussions and found no related items (your issue might already be addressed on the development branch!).
  • I am using the latest version of Open WebUI.

Installation Method

Git Clone

Open WebUI Version

v0.6.43

Ollama Version (if applicable)

No response

Operating System

Debian 12

Browser (if applicable)

Firefox 146.0.1

Confirmation

  • I have read and followed all instructions in README.md.
  • I am using the latest version of both Open WebUI and Ollama.
  • I have included the browser console logs.
  • I have included the Docker container logs.
  • I have provided every relevant configuration, setting, and environment variable used in my setup.
  • I have clearly listed every relevant configuration, custom setting, environment variable, and command-line option that influences my setup (such as Docker Compose overrides, .env values, browser settings, authentication configurations, etc).
  • I have documented step-by-step reproduction instructions that are precise, sequential, and leave nothing to interpretation. My steps:
  • Start with the initial platform/version/OS and dependencies used,
  • Specify exact install/launch/configure commands,
  • List URLs visited, user input (incl. example values/emails/passwords if needed),
  • Describe all options and toggles enabled or changed,
  • Include any files or environmental changes,
  • Identify the expected and actual result at each stage,
  • Ensure any reasonably skilled user can follow and hit the same issue.

Expected Behavior

When using gpt-image-1.5 via Azure, image generation should work...it doesn't.

Actual Behavior

When attempting to create an image using gpt-image-1.5 via Azure, the following is returned:

It looks like the image generation attempt failed due to the following error:  
    [ERROR: azure-openai error: Unknown parameter: 'response_format'.]

If I grab the actual POST from Open WebUI and remove the response_format from the body:
"response_format": "b64_json"

The image generation works properly.

Steps to Reproduce

  1. Go to Microsoft Foundry (Azure AI) and provision your gpt-image.1.5 model.
  2. Within Open WebUI, go to Admin Panel > Settings > Images, and setup gpt-image-1.5.
  3. Generate an image...it fails.

Using dalle-3 works...but Azure will be decommissioning DALLE-3 on February 18, 2026.

Logs & Screenshots

It looks like the image generation attempt failed due to the following error:  
    [ERROR: azure-openai error: Unknown parameter: 'response_format'.]

Additional Information

No response

Originally created by @rutgers-master on GitHub (Jan 6, 2026). Original GitHub issue: https://github.com/open-webui/open-webui/issues/20423 ### Check Existing Issues - [x] I have searched for any existing and/or related issues. - [x] I have searched for any existing and/or related discussions. - [x] I have also searched in the CLOSED issues AND CLOSED discussions and found no related items (your issue might already be addressed on the development branch!). - [x] I am using the latest version of Open WebUI. ### Installation Method Git Clone ### Open WebUI Version v0.6.43 ### Ollama Version (if applicable) _No response_ ### Operating System Debian 12 ### Browser (if applicable) Firefox 146.0.1 ### Confirmation - [x] I have read and followed all instructions in `README.md`. - [x] I am using the latest version of **both** Open WebUI and Ollama. - [x] I have included the browser console logs. - [x] I have included the Docker container logs. - [x] I have **provided every relevant configuration, setting, and environment variable used in my setup.** - [x] I have clearly **listed every relevant configuration, custom setting, environment variable, and command-line option that influences my setup** (such as Docker Compose overrides, .env values, browser settings, authentication configurations, etc). - [x] I have documented **step-by-step reproduction instructions that are precise, sequential, and leave nothing to interpretation**. My steps: - Start with the initial platform/version/OS and dependencies used, - Specify exact install/launch/configure commands, - List URLs visited, user input (incl. example values/emails/passwords if needed), - Describe all options and toggles enabled or changed, - Include any files or environmental changes, - Identify the expected and actual result at each stage, - Ensure any reasonably skilled user can follow and hit the same issue. ### Expected Behavior When using gpt-image-1.5 via Azure, image generation should work...it doesn't. ### Actual Behavior When attempting to create an image using gpt-image-1.5 via Azure, the following is returned: ``` It looks like the image generation attempt failed due to the following error: [ERROR: azure-openai error: Unknown parameter: 'response_format'.] ``` If I grab the actual POST from Open WebUI and remove the response_format from the body: ` "response_format": "b64_json"` The image generation works properly. ### Steps to Reproduce 1. Go to Microsoft Foundry (Azure AI) and provision your gpt-image.1.5 model. 2. Within Open WebUI, go to Admin Panel > Settings > Images, and setup gpt-image-1.5. 3. Generate an image...it fails. Using dalle-3 works...but Azure will be decommissioning DALLE-3 on February 18, 2026. ### Logs & Screenshots ``` It looks like the image generation attempt failed due to the following error: [ERROR: azure-openai error: Unknown parameter: 'response_format'.] ``` ### Additional Information _No response_
GiteaMirror added the bug label 2026-04-25 08:48:49 -05:00
GiteaMirror commented 2026-04-25 08:48:52 -05:00
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@owui-terminator[bot] commented on GitHub (Jan 6, 2026):

🔍 Similar Issues Found

I found some existing issues that might be related to this one. Please check if any of these are duplicates or contain helpful solutions:

  1. #19451 issue: Images with gpt-image-1 ERROR: No connection adapters were found
    by 3keyallen3 • Nov 25, 2025 • bug

  2. #19433 issue: error while creating an image using openai gpt-image-1
    by Abdelrahman1993 • Nov 24, 2025 • bug

  3. #20237 issue: Image editing stopped working
    by tomasloksa • Dec 29, 2025 • bug, confirmed issue

💡 Tips:

  • If this is a duplicate, please consider closing this issue and adding any additional details to the existing one
  • If you found a solution in any of these issues, please share it here to help others

This comment was generated automatically by a bot. Please react with a 👍 if this comment was helpful, or a 👎 if it was not.

<!-- gh-comment-id:3714722348 --> @owui-terminator[bot] commented on GitHub (Jan 6, 2026): 🔍 **Similar Issues Found** I found some existing issues that might be related to this one. Please check if any of these are duplicates or contain helpful solutions: 1. [#19451](https://github.com/open-webui/open-webui/issues/19451) **issue: Images with gpt-image-1 ERROR: No connection adapters were found** *by 3keyallen3 • Nov 25, 2025 • `bug`* 2. [#19433](https://github.com/open-webui/open-webui/issues/19433) **issue: error while creating an image using openai gpt-image-1** *by Abdelrahman1993 • Nov 24, 2025 • `bug`* 3. [#20237](https://github.com/open-webui/open-webui/issues/20237) **issue: Image editing stopped working** *by tomasloksa • Dec 29, 2025 • `bug`, `confirmed issue`* --- 💡 **Tips:** - If this is a duplicate, please consider closing this issue and adding any additional details to the existing one - If you found a solution in any of these issues, please share it here to help others *This comment was generated automatically by a bot.* Please react with a 👍 if this comment was helpful, or a 👎 if it was not.
GiteaMirror commented 2026-04-25 08:48:53 -05:00
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@rozatoo commented on GitHub (Jan 6, 2026):

Hi! :)

Ive got an instance running Open WebUI with gpt-image-1.5 via Azure OpenAI, and image generation works fine.

My Configs:
Model: gpt-image-1.5
Image Size: 1024x1024
Image prompt generation: true
Image generation engine: OpenAI
OpenAI API Base URL: https://${AZURE_OPENAI_RESOURCE}/openai/deployments/${AZURE_OPENAI_IMAGE_DEPLOYMENT_NAME}/
OpenAI API Key: Key from Azure OpenAI
OpenAI API Version: 2025-04-01-preview

No additional parameters.

Same for edit, that works too.

Hope this helps!

<!-- gh-comment-id:3715025863 --> @rozatoo commented on GitHub (Jan 6, 2026): Hi! :) Ive got an instance running Open WebUI with gpt-image-1.5 via Azure OpenAI, and image generation works fine. My Configs: Model: `gpt-image-1.5` Image Size: `1024x1024` Image prompt generation: `true` Image generation engine: `OpenAI` OpenAI API Base URL: `https://${AZURE_OPENAI_RESOURCE}/openai/deployments/${AZURE_OPENAI_IMAGE_DEPLOYMENT_NAME}/` OpenAI API Key: `Key from Azure OpenAI` OpenAI API Version: `2025-04-01-preview` No additional parameters. Same for edit, that works too. Hope this helps!
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Reference: github-starred/open-webui#34711
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