ChatGPT

ChatGPT, an AI-powered conversational chatbot launched by OpenAI, has taken the world by storm. Built on the GPT-4 language model developed by OpenAI, this AI dialogue tool can perform a wide range of Natural Language Processing (NLP) tasks, including summarization, classification, questioning and answering, as well as error correction with human-like responsiveness. As a revolutionary technology, ChatGPT enhances productivity to unprecedented levels, making people’s lives easier.

Who developed ChatGPT?

ChatGPT, an AI-powered chatbot, is developed and owned by OpenAI. Founded in 2015 by Elon Musk and Sam Altman as a nonprofit organization, OpenAI initially secured $1 billion in funding from Silicon Valley venture capitalists to build neural networks. In 2018, Musk withdrew from OpenAI and no longer holds any equity in the company.

In 2019, OpenAI raised a second round of 1 billion from Microsoft. Leveraging Azure supercomputers they began constructing large language models. By2023, Microsoft had invested an additional 10 billion in OpenAI, bringing its total stake to 49%. Other investors, including Khosla Ventures, collectively hold another 49%, while OpenAI retains only 2% equity.

How does ChatGPT work?

Prior to ChatGPT, AI-powered chatbots had already emerged, but they failed to garner widespread attention due to their lack of conversational capabilities. In 2017, Google introduced a neural network architecture named The Transformer in their paper “Attention is All You Need”, which triggered a paradigm shift in training large language models (LLMs).

Compared to other neural networks, both Recurrent Neural Networks (RNN) and Long Short-Term Memory (LSTM) networks proved inferior to the Transformer. RNNs struggled with long-term dependencies, while LSTMs failed to focus on the correct words in lengthy sentences to produce accurate outputs.

The Transformer revolutionized language model training. Unlike RNNs, which process words sequentially, the Transformer processes the entire input simultaneously. Additionally, it allows parallel processing of multiple inputs, reducing computational costs and accelerating training speeds.

Recognizing the Transformer’s potential, OpenAI leveraged this architecture for data training. The training process for these models primarily involves three stages:

1. Generative Pre-training: Building foundational language understanding through exposure to vast text corpora.
2. Supervised Fine-tuning: Refining the model using task-specific labeled data to align outputs with human expectations.
3. Reinforcement Learning from Human Feedback (RLHF): Optimizing response quality via iterative human evaluations and reward modeling.

How do I use ChatGPT?

ChatGPT has a basic version available for free use. To utilize ChatGPT, simply visit their official website (https://chat.openai.com/chat) without needing to download anything. Proceed to log in on the ChatGPT page, where you can choose to register via email or sign in using your Google or Microsoft account.

The web interface of ChatGPT is user-friendly for all users. It features a text box for users to input queries and a response display area. After entering your text prompt, you will receive an immediate response from ChatGPT.