Explainer-What is Microsoft-backed OpenAI's GPT-4 model?

GPT-4 is "multimodal", which means it can generate content from both image and text prompts. WHAT IS THE DIFFERENCE BETWEEN GPT-4 AND GPT-3.5? GPT-3.5 takes only text prompts, whereas the latest version of the large language model can also use images as inputs to recognize objects in a picture and analyze them. GPT-3.5 is limited to about 3,000-word responses, while GPT-4 can generate responses of more than 25,000 words. GPT-4 is 82% less likely to respond to requests for disallowed content than its predecessor and scores 40% higher on certain tests of factuality.