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TechRadar
Eric Hal Schwartz

ChatGPT model matchup - I pitted OpenAI's o3, o4-mini, GPT-4o, and GPT-4.5 AI models against each other and the results surprised me

ChatGPT OpenAI
An iPhone showing the ChatGPT logo on its screen.

OpenAI, as if trying to break its own record for the most confusing product lineup in history, has released two new AI models for ChatGPT: OpenAI o3 and OpenAI o4-mini.

These join GPT-4.5, which is still in testing, and GPT-4o, the default option for ChatGPT users. Naturally, I wanted to see how they would perform against each other.

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