GPT-4 is a multimodal large language model created by OpenAI, and the fourth in its numbered “GPT-n” series of GPT foundation models. It was released on March 14, 2023, and has been made publicly available in a limited form via the chatbot product ChatGPT Plus (a premium version of ChatGPT), and with access to the GPT-4 based version of OpenAI’s API being provided via a waitlist.
What is new in GPT-4?
Unlike its predecessors, GPT-4 can take images as well as text as input; this gives it the ability to describe the humor in unusual images, summarize text from screenshots, and answer exam questions that contain diagrams. To gain further control over GPT-4, OpenAI introduced the “system message”, a directive in natural language given to GPT-4 in order to specify its tone of voice and task. For example, the system message can instruct the model to “be a Shakespearean pirate”, in which case it will respond in rhyming, Shakespearean prose, or request it to “always write the output of [its] response in JSON”, in which case the model will do so, adding keys and values as it sees fit to match the structure of its reply.
OpenAI stated that GPT-4 is “more reliable, creative, and able to handle much more nuanced instructions than GPT-3.5.” They produced two versions of GPT-4, with context windows of 8,192 and 32,768 tokens, a significant improvement over GPT-3.5 and GPT-3, which were limited to 4,096 and 2,049 tokens respectively.
How is it different from ChatGPT?
ChatGPT is a chatbot product that uses a version of GPT-3.5 as its underlying model. It was launched by OpenAI in 2022 as a way to showcase the capabilities of GPT-3.5 and to collect feedback from users. ChatGPT allows users to have free-form conversations with various personalities and topics, such as celebrities, animals, sports, etc. ChatGPT also has a feature called “playground”, where users can experiment with different settings and prompts for the model.
ChatGPT Plus is a premium version of ChatGPT that uses GPT-4 as its underlying model. It was launched by OpenAI in 2023 as a way to showcase the capabilities of GPT-4 and to collect feedback from users. ChatGPT Plus has all the features of ChatGPT, but with improved performance, reliability, creativity, and nuance. ChatGPT Plus also has a feature called “multimodal”, where users can upload images or screenshots and have the model generate text based on them.
GPT-4 is a multimodal large language model that can take images as well as text as input and generate text outputs. It is the latest milestone in OpenAI’s effort in scaling up deep learning and exhibits human-level performance on various professional and academic benchmarks. It is available in a limited form via ChatGPT Plus and the API waitlist.