OpenAI has unveiled its latest language model, GPT-4, which is even bigger and better than its surprise hit, ChatGPT. However, the company is remaining secretive about just how much bigger and better it is compared to ChatGPT. GPT-4 is a multimodal language model that can respond to both text and images, and is expected to be better at some basic reasoning than its predecessor. For now, access to GPT-4 will be limited to users on the waitlist and subscribers to ChatGPT Plus in a text-only capacity.