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OpenAI Releases Its Next-Generation GPT-4.5 Model to ChatGPT Pro Users

OpenAI introduced GPT-4o, a non-reasoning model to ChatGPT users back in May 2024. Finally, over 10 months later, the hot AI startup has unveiled its next-generation GPT-4.5 AI model, codenamed ‘Orion’ today. GPT-4.5 is the last non-reasoning model from OpenAI as the upcoming GPT-5 will merge the o3 reasoning model to create a unified AI system. OpenAI says GPT-4.5 is…