ChatGPT is an artificial-intelligence (AI) chatbot developed by OpenAI and launched in November 2022. It is built on top
of OpenAI's GPT-3.5 and GPT-4 families of large language models (LLMs) and has been fine-tuned (an approach to transfer learning) using
both supervised and reinforcement learning techniques.
ChatGPT was launched as a prototype on
November 30, 2022. It garnered attention for its detailed responses and
articulate answers across many domains of knowledge. Its uneven factual
accuracy, however, has been identified as a significant drawback. Following
the release of ChatGPT, OpenAI's valuation was estimated at US$29 billion in 2023.
The original release of ChatGPT was based
on GPT-3.5. A version based on GPT-4, the newest OpenAI model, was released on March 14,
2023, and is available for paid subscribers on a limited basis.
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