[on the cheaper o3] Not quantized. Weights are the same.
If we did change the model, we'd release it as a new model with a new name in the API (e.g., o3-turbo-2025-06-10). It would be very annoying to API customers if we ever silently changed models, so we never do this [1].
[1]
chatgpt-4o-latest
being an explicit exception
— Ted Sanders, Research Manager, OpenAI
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