GPT-4.5 vs GPT-4o
GPT-4o superior on most benchmarks and speed. GPT-4.5 was deprecated.
GPT-4.5
The last non-reasoning OpenAI flagship. Better at vibes than reasoning. Quietly deprecated in favor of GPT-5.
Use this when
GPT-4.5 legacy deployments only; prefer GPT-4o or GPT-5 for new work.
Full profile →GPT-4o
The omni model. Text, image, audio natively in one system. Speed doubled vs. GPT-4.
Use this when
Any new deployment where GPT-class model needed.
Full profile →Cost comparison
GPT-4.5 deprecated; GPT-4o $2.50/$10 per M.