ChatGPT, one of the most popular applications of recent times, is an artificial intelligence chatbot developed by the artificial intelligence company OpenAI. Since its release in November 2022, ChatGPT's popularity has been rapidly increasing, and according to Statista data as of January 2023, it has reached 100 million users.

ChatGPT, which is touted as a competitor to Google, is an enhanced version of the GPT-3.5 (Generative Pre-training Transformer) language model that uses deep learning to generate human-like text. Generally known for its question-and-answer feature, ChatGPT offers the following features in the field of technology:

• Question-Answer (Providing Information)
• Solving Mathematical Equations and Performing Operations  
• Debugging and Correcting Errors  
• Summarizing Text and Identifying Keywords in Text  
• Text Writing (Academic articles, literary texts, etc.)
• Text Translation  
• Software Development  
• Classification  
• Providing Recommendations

The GPT-4 version, which was released in March 2023, is an improved iteration of GPT-3. With a larger database and enhanced problem-solving capabilities, GPT-4 stands out as a more secure and user-friendly version. One of the significant features of GPT-4 is its ability to accept visual inputs in addition to text. Other notable features of the new version include:

• Composing songs and writing scripts: GPT-4 can compose songs and create scripts.  
• Learning your writing style: It can collaborate with you to generate text when you want to write fictional or technical content, adapting to your writing style.
• Processing capacity exceeding 25,000 words: This allows it to generate longer content, understand more complex conversations, and respond accordingly.  
• Document search and analysis: GPT-4 can search through documents and analyze them.  
• Multilingual support: In the GPT-4 version, the robot can answer questions in approximately 26 languages.

The most significant difference between ChatGPT-4 and its previous version is its reliance on a paid membership option. While you can use ChatGPT for free in the trial version, ChatGPT Plus users and software developers can benefit from GPT-4 by paying a monthly fee of $20.