OpenAI says it's rolling out a new update that improves the existing GPT-5.5 Instant model and retires multiple legacy models, including o3. GPT-5.5 Instant was released on April 23, and it has made ...
OpenAI is retiring its GPT-4.5 and OpenAI o3 models. These models are currently only available to paid ChatGPT subscribers. GPT-4.5 will be available through most of June; OpenAI o3 is shutting down ...
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