Hi there @Jash123 
Looks like the ChatGPT incident Troy mentioned was since resolved. Are you still seeing this “Unable to process request from OpenAI” errors?
If you are, can you have a look into the billing overview page in your OpenAI account and confirm there’s enough API credits to carry out the test? I got a similar error the other day and it was due to me not having enough API credits in my OpenAI account.
Keep us posted on how you get on, want to make sure this gets sorted!
Hi, thank you both for your responses. When the ChatGPT incident resolved, it started working, so not a problem with Zapier in the end...
That’s great news @Jash123! Glad to hear that the issue is now resolved!
If you have any other questions, please don’t hesitate to reach out to the Community. We’re always happy to help! 
Hello! I’m running into the exact same issue, using 4o and I can’t see any major outages with OpenAI. I am on a paid plan. I’ve tried all the troubleshooting steps without any luck.
If you’re encountering the error “Failed to create a conversation” when trying to use ChatGPT, here are some common reasons and troubleshooting steps you can try:
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Check Your Internet Connection
Make sure your internet connection is stable. A weak or intermittent connection can cause problems when creating a new conversation.
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Refresh the Page or Restart the App
Sometimes, simply refreshing the browser tab or restarting the ChatGPT app can resolve temporary glitches.
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Clear Browser Cache and Cookies
Cached data or cookies might interfere with the session. Try clearing them and then reload the page.
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Sign Out and Sign Back In
Logging out of your OpenAI account and logging back in can refresh your session and fix authorization issues.
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Check OpenAI Service Status
Visit OpenAI Status Page to see if there are any ongoing outages or maintenance affecting the service.
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Try a Different Browser or Device
Sometimes, browser-specific issues or extensions can block functionality. Switching to another browser or device can help isolate the problem.
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API Usage Limits (if using API)
If you’re using the OpenAI API and see this error, you might have hit your rate limit or exceeded your usage quota. Check your API dashboard for usage and limits.
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Contact OpenAI Support
If none of the above work, you can reach out to OpenAI support with details of your issue, including screenshots and error messages.
Additional Tips:
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Ensure your browser and operating system are up to date.
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Disable browser extensions that might interfere with network requests, such as ad blockers or VPNs.