GPT-4.5 Expands to ChatGPT Plus After Pro-Only Debut

March 5, 2025

OpenAI expanded GPT-4.5 from ChatGPT Pro to Plus one week after launch, despite the expensive model trailing newer reasoning systems on several benchmarks.

OpenAI

Sources

TechCrunch

News · Mar 5, 2025

OpenAI's GPT-4.5 AI model comes to more ChatGPT users

Additional sources

TechCrunch

News · Feb 27, 2025

OpenAI's GPT-4.5 is better at convincing other AIs to give it money

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