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← Back to all updatesPublished ·OpenAI• Minor
OpenAI is retiring o3 and GPT-4.5 from ChatGPT to focus on newer models.
The read
The removal of these models forces a transition to the current frontier for all non-API workflows.
The frame
Operators must migrate custom instructions and saved prompts to newer models before the sunset dates to maintain performance.
Primary source
OpenAI →Keep reading
See what Nova3 builds →Related updates
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