There's a common confusion between GPT-4o and ChatGPT. GPT-4o is an AI model — the engine. ChatGPT is OpenAI's consumer product — the car. Understanding this distinction helps you make better choices about AI tools.
GPT-4o (the 'o' stands for 'omni') is OpenAI's flagship multimodal model released in 2024. It processes text, images, and audio with state-of-the-art performance. It's known for being fast, accurate, and remarkably good at nuanced conversation.
ChatGPT is OpenAI's web application that uses various models. Free ChatGPT users now get newer but often less preferred models, while GPT-4o is reserved for Plus subscribers ($20/month) and API users.
Many users specifically prefer GPT-4o over newer models for its conversational warmth, reasoning ability, and consistency. When OpenAI moved free users away from GPT-4o, there was significant backlash.
4omodel.com gives you direct access to the GPT-4o model without the ChatGPT Plus subscription. Same model, different interface, free access. If you specifically want GPT-4o (and many people do), this is the most straightforward way to get it.