What to expect when models change

We regularly update ChatGPT by introducing new models and retiring older ones. We evaluate models across many dimensions, including capability, safety, and overall usefulness. As newer models improve, we periodically deprecate older models, so we can focus our efforts on building the most helpful experiences for everyone.

These model transitions can sometimes feel disruptive. Changes in how a model responds, even when subtle, may affect workflows or how you experience conversations. To support continuity, your prior conversations can carry over to newer models, including any background you’ve shared about your interests, preferences, or goals. While tone or style may change, that retained context helps the conversation remain attentive, responsive, and grounded in what you’ve already shared.

We also offer tools that allow you to shape how ChatGPT responds over time. We continue to improve personality and customization features so you can tailor the experience you want. These features support flexible and personalized interactions, even as underlying models evolve.

User feedback plays an important role in these model updates. We continue to improve model behavior, personality and personalization.

At the same time, we understand that some people grow accustomed to a particular model’s conversational style or way of responding. When a familiar experience changes or ends, that adjustment can feel frustrating or disappointing—especially if it played a role in how you thought through ideas or navigated stressful moments.

We train our models to encourage real world connection and to complement support from others. If you notice that this transition is affecting you emotionally and you need additional support, resources are available, including crisis support in ChatGPT.

Model transitions are part of our ongoing work to improve safety, quality, and performance. Your experience matters to us, and we’re committed to supporting you as ChatGPT continues to evolve.