**What is ChatGPT**

ChatGPT is a globally popular conversational chatbot developed by OpenAI. This AI chat tool is built on the GPT-4 language model developed by OpenAI, capable of performing various natural language processing (NLP) tasks such as summarization, classification, questioning and answering, as well as human-like error correction reactions. ChatGPT is a revolutionary technology that elevates people’s work efficiency to a new level, making their lives easier.

**Developers of ChatGPT**

The AI chatbot ChatGPT is developed and owned by OpenAI, initially established as a non-profit company by Elon Musk and Sam Altman in 2015. In 2018, Musk withdrew from OpenAI and no longer held shares in the company. Initially, the company secured $1 billion from Silicon Valley venture capitalists to kickstart the construction of neural networks.

In 2019, OpenAI raised another $1 billion in the second round of funding from Microsoft. They began using Azure supercomputers to build these large language models. Fast forward to 2023, Microsoft invested $10 billion in OpenAI, bringing its total stake to 49%. Other investors, including Khosla Ventures, hold another 49%, while OpenAI retains only 2% ownership.

**How ChatGPT Works**

Before ChatGPT, AI chatbots had already existed, but they did not gain widespread attention as they were not conversational. In 2017, Google introduced a neural network architecture called The Transformer in their paper “Attention is All You Need,” marking a paradigm shift in training large language models (LLM).

Compared to other neural networks, recurrent neural networks (RNN) and long short-term memory networks (LSTM) fell short of Transformer networks. RNN had issues with long-term dependencies, and LSTM couldn’t focus on the correct words in long sentences for accurate output.

The Transformer network changed the training approach for language models. Unlike RNN, which processed one word at a time, Transformer could inject the entire input at once. Additionally, Transformer allowed parallel processing of multiple inputs, reducing computational costs and speeding up training.

Realizing the potential of Transformer, OpenAI decided to leverage this network and train models according to its architecture. The training process for these models primarily involves three steps: generative pre-training, supervised fine-tuning, and reinforcement learning from human feedback.

**How to Use ChatGPT**

ChatGPT has a basic version that can be used for free. To use ChatGPT, you just need to visit their official website (https://chat.openai.com/chat). No downloads are required; simply log in to the ChatGPT page. You can choose to register with your email or log in with your Google or Microsoft account.

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

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