OpenAI has severed ties with Mixpanel after a data breach exposed sensitive information about users of its API. The breach, detected by Mixpanel on November 9 and reported to OpenAI on November 25, compromised profile data such as names, email addresses, approximate locations, and operating system details. Only users of OpenAI's platform, which includes tools for developing AI products, are affected. Typical ChatGPT users are largely unaffected unless they also use the API. In response to the incident, OpenAI has elevated its security standards for all vendors and is reviewing its partnerships. The company emphasized its commitment to security and privacy while notifying impacted users directly. OpenAI has warned users to be cautious of phishing attempts that may arise following the breach but stated that they do not need to reset their passwords. The company's public statement closely mirrors what was communicated to affected customers. While OpenAI did not disclose the number of users impacted, it has confirmed that it is taking steps to monitor for any misuse of the exposed data. Mixpanel, which previously helped OpenAI analyze customer interactions with its API, did not provide additional comments beyond directing inquiries back to OpenAI's statement. The situation highlights ongoing concerns about data security in the tech industry.