GPT-4.5 or o3: Which ChatGPT Is Better, and Can It Really Create Apps?
Aug 19, 2025 · 15 min read · Picture this: Sarah, a startup founder in Austin, sits at her laptop at 2 AM, staring at two ChatGPT options. She needs to build a customer service chatbot for her e-commerce business, but she's completely lost between GPT-4.5 and o3. Sound familiar?...
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