Lost USD 750 worth of credits in a day


I am in a huge trouble. A new API key was created on June 14th, 2024 under the “Default Project” through my OpenAI account. This API key seems to be created by one of the team members’ email ID. This team member is denying creation of such a key. This API key has consumed credits worth USD 826 in a single day (yesterday). Is there a way I can track what requests (the contents of the prompt) were made through this API key so that I can figure out who is the culprit?

This is a huge loss for me. Is there a way I can get in touch with OpenAI support who can help me with tracking what API calls were actually made through the newly created API key?