#system maintenance
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Hi @mortal pond. I'm kapa.ai, your friendly support bot. I will try to answer your question by searching through the knowledge base. :wave:
Yes, OpenAI does provide notice before making changes to their system. Specifically, for new versions of models like gpt-4 and gpt-3.5-turbo, users of undated model names are typically notified by email about 2 weeks before any change takes place. After a new version is launched, older versions are typically deprecated 3 months later. This information can be found in the OpenAI platform documentation (https://platform.openai.com/docs/deprecations).