In a head-to-head comparison, o3-pro was far less reliable and secure, and reasoned excessively compared to GPT-4o.

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In tandem with the model upgrade, OpenAI announced a dramatic cost reduction for its o3 model—from $10 to $2 per million input tokens and from $40 to $8 per million output tokens. Cached prompt ...

AI powerhouse OpenAI has introduced a major upgrade with a massive price cut. The company has introduced the o3-Pro model, which is a giant leap in reasoning technology. The model can be accessed ...

OpenAI’s new O3-Pro model is built to handle complex questions and is now available to ChatGPT Plus users, businesses, and developers via API. Friday, Jun 20, 2025. New Delhi o C.