OpenAI Conversation output format issue

[hsguyue]

The problem

After upgrading to version 2025.3.0, the output format of OpenAI Conversation is incorrect, please refer to the screenshot

What version of Home Assistant Core has the issue?

core-2025.3.0

What was the last working version of Home Assistant Core?

core-2025.3.0

What type of installation are you running?

Home Assistant OS

Integration causing the issue

OpenAI Conversation

Link to integration documentation on our website

https://www.home-assistant.io/integrations/openai_conversation

Diagnostics information

No response

Example YAML snippet

Anything in the logs that might be useful for us?

Additional information

No response

[home-assistant]

Hey there @balloob, mind taking a look at this issue as it has been labeled with an integration (openai_conversation) you are listed as a code owner for? Thanks!

Code owner commands

Code owners of openai_conversation can trigger bot actions by commenting:

• @home-assistant close Closes the issue.
• @home-assistant rename Awesome new title Renames the issue.
• @home-assistant reopen Reopen the issue.
• @home-assistant unassign openai_conversation Removes the current integration label and assignees on the issue, add the integration domain after the command.
• @home-assistant add-label needs-more-information Add a label (needs-more-information, problem in dependency, problem in custom component) to the issue.
• @home-assistant remove-label needs-more-information Remove a label (needs-more-information, problem in dependency, problem in custom component) on the issue.

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openai_conversation documentation
openai_conversation source
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[balloob]

What model are you using? And are you using the OpenAI integration with the OpenAI API or did you override the endpoint?