ChatGPT

I. What is ChatGPT

ChatGPT is the world’s most influential generative AI chatbot developed by OpenAI, an American artificial intelligence company. It is built on the GPT (Generative Pre-trained Transformer) series of large language models. It can comprehend and generate natural language, engage users in smooth multi-turn conversations, and accomplish various complex cognitive tasks.

As of May 2026, the latest mainstream model of ChatGPT is GPT-4o (GPT-4 Omni). It features full multimodal interaction capabilities, supporting input and output of text, images, audio and video, ranking among the industry leaders in reasoning speed, accuracy and multi-task processing performance.

The official built-in Temporary Chat Mode serves as a core privacy protection feature. Once enabled, chat records will not be saved to user history nor used for OpenAI model training. OpenAI only retains copies of temporary chats for up to 30 days for security review purposes.

II. Core Functions

ChatGPT covers nearly all fields requiring linguistic and cognitive capabilities, with core functions as follows:

1. Multi-turn Natural Language Conversation
   • Understand contextual logic for coherent and logical ongoing chats
   • Adjust reply tones including formal, humorous, concise and detailed styles
   • Support communication and translation across over 100 languages
2. Content Creation & Editing
   • Compose articles, emails, reports, speeches and social media copies
   • Produce creative works such as novels, poems and scripts
   • Polish, rewrite, translate and summarize texts efficiently
   • Generate outlines, mind maps and PPT framework content
3. Coding Development & Debugging
   • Compatible with mainstream programming languages including Python, Java, JavaScript and C++
   • Generate code snippets, complete functions and project architectures
   • Troubleshoot errors, explain logic and optimize code performance
   • Write unit tests, API documents and deployment scripts
4. Q&A & Learning Assistance
   • Solve academic questions covering math, physics, history, philosophy and more
   • Interpret complex theories and share study resources & methods
   • Arrange study schedules, simulate exams and grade assignments
   • Translate professional papers and sort out academic notes
5. Multimodal Interaction (Exclusive for Plus Users)
   • Image Understanding: Identify picture content, extract text, analyze charts and answer image-related questions
   • Image Generation: Integrated with DALL-E 3 to create high-quality visuals via text prompts
   • Voice Interaction: Real-time voice chat, speech-to-text and text-to-speech conversion
   • Video Analysis: Parse short videos, extract key information and generate subtitles
6. Office Efficiency Optimization
   • Sort meeting minutes and make to-do lists
   • Process data, draw charts and write data analysis reports
   • Draft business plans, market research reports and product requirement documents
   • Handle emails, draft contracts and translate business files
7. Plugin Ecosystem (Exclusive for Plus Users)
   • Connect third-party services to expand functional boundaries
   • Support real-time web search, online shopping, flight & hotel booking
   • Integrate math calculation, data analysis, PDF parsing and other practical tools

III. Versions & Pricing

ChatGPT offers free and paid editions to meet diverse user demands:

Note: The free version does not support multimodal functions, plugins or real-time web search, only basic text conversation is available.

IV. Quick Start Guide

1. Visit Official Website

Open browser and enter official link: https://chat.openai.com

2. Register & Log In

• New users sign up for an OpenAI account via email; phone verification may be required in certain regions
• Existing users can log in directly
• One-click login supported via Google, Microsoft and Apple accounts

3. Select Chat Mode

• Regular Chat: Conversations are saved in history for later review and continuation
• Temporary Chat: Turn on the switch on the upper left corner; records will not be stored or used for model training

4. Choose Model (Plus Only)

Select target model from the top dropdown menu:

• GPT-3.5 Turbo: Fast response, ideal for daily chats and simple tasks
• GPT-4o: Top-tier capability for complex reasoning, multimodal tasks and professional work

5. Enter Prompts to Start

Type your questions or demands in the input box and hit send.

• More detailed prompts bring higher-quality replies
• Use commands like explain in detail, illustrate step by step and give examples to guide outputs

6. Additional Operations

• Tap the three-dot icon beside chats to rename, share or delete conversations
• Click the plus icon above the input box to start a new dialogue
• Plus users can upload images, audio and videos via the plus button on the left side

V. Target Users

As a universal AI tool, ChatGPT fits almost all user groups:

• Students: Study assistance, Q&A, thesis writing and exam preparation
• Office Workers: Boost work efficiency, draft reports, process emails and analyze data
• Developers: Code writing, program debugging, tech learning and document generation
• Content Creators: Inspire ideas, write copies, create novels and design scripts
• Educators: Make courseware, grade homework, design curriculums and answer questions
• Entrepreneurs: Compose business plans, analyze markets and formulate marketing strategies
• General Users: Daily problem-solving, text translation, travel planning and casual chatting

VI. Application Scenarios

ChatGPT has extremely wide application coverage:

• Education & Learning: Subject tutoring, language learning, thesis writing and knowledge popularization
• Office & Business: Document drafting, meeting records, data analysis and business communication
• Software Development: Code generation, debugging optimization, test case writing and technical documentation
• Content Creation: Copywriting, creative planning, self-media content and literary writing
• Design & Creation: Image generation, design inspiration, UI/UX design and video script creation
• Daily Life Services: Travel planning, food recommendation, health consultation and legal reference
• Scientific Research: Literature review, data analysis, experiment design and paper polishing

VII. Core Advantages Over Rivals

Compared with Claude 3, Google Gemini, ERNIE Bot and other similar AI products, ChatGPT owns these prominent strengths:

1. Leading Model Performance
   • GPT-4o ranks top-tier in reasoning logic, contextual comprehension and multimodal generation quality
   • Stronger capability in handling intricate problems and long-context content
   • Outperforms most competitors in code generation and debugging
2. Mature Ecosystem
   • The most abundant plugin ecosystem connecting thousands of third-party services
   • Built-in top OpenAI tools including DALL-E 3 and Whisper
   • Complete API access for developers to build customized AI applications
3. Rapid Iteration Speed
   • OpenAI continuously launches new models and functions to maintain technical superiority
   • Latest features such as GPT-4o and voice interaction are prioritized for Plus subscribers
   • Constant user experience and model performance optimization
4. Abundant Community Resources
   • The world’s largest user and developer community
   • Massive practical tutorials, prompt skills and industry best practices online
   • Emerging third-party tools keep expanding its usage scenarios
5. Sound Privacy Protection
   • Dedicated temporary chat mode to safeguard user privacy
   • Enterprise version supports end-to-end encryption and data isolation
   • Users can delete chat history at any time

VIII. Usage Skills & Objective Evaluation

Advanced Prompt Skills

1. Set Clear Roles: Assign specific identities such as senior Python developer or professional copywriter
2. Specify Detailed Requirements: Clarify goals, formats, standards and restrictions in advance
3. Divide Tasks into Steps: Split complex demands into sequential execution steps
4. Provide Reference Examples: Offer sample outputs to unify style and structure
5. Iterative Optimization: Put forward revision suggestions to polish unsatisfactory replies

Pros & Cons

Advantages:

• High-quality, logical and informative replies
• Powerful multimodal capability with high recognition accuracy
• Excellent coding performance for complex programming tasks
• Powerful expandability via rich plugins
• Concise interface and easy operation

Disadvantages:

• Usage quota limits for free users and congestion during peak hours
• Relatively high monthly fee of Plus version
• Occasional AI hallucinations with false or inaccurate information
• Slightly weaker Chinese comprehension compared with English
• Direct official website access is unavailable in some regions

IX. Usage Precautions

1. Privacy & Security
   • Avoid leaking ID numbers, bank card info, passwords and other sensitive personal data
   • Use temporary chat or enterprise mode when involving commercial secrets
   • Clean up useless chat records regularly
2. Information Authenticity
   • Beware of AI hallucinations, especially for professional knowledge and latest events
   • Cross-verify all critical information
   • Do not fully rely on its answers in medical, legal, financial and other professional fields
3. Copyright Regulations
   • Generated content may involve copyright risks especially for commercial use
   • Do not directly adopt AI-written content as academic papers or official publications
   • Mark source attribution for AI-generated texts and images
4. Anti-abuse Rules
   • Refuse to generate illegal, harmful, discriminatory and offensive content
   • Ban cheating, fraud, rumor-spreading and other improper behaviors
   • Strictly abide by OpenAI terms of service and community rules
5. Avoid Over-dependence
   • Keep independent thinking ability in study and work
   • Treat ChatGPT only as an auxiliary tool rather than a total substitute

X. FAQ

Q1: Why cannot I access the official ChatGPT site?

A1: Direct access is restricted in certain regions; compliant network proxy service is required. You may also update your browser and clear cache & cookies for retry.

Q2: What are the differences between free and Plus versions?

A2: The free version only supports GPT-3.5 Turbo with usage limits, without multimodal, plugin and web search functions. ChatGPT Plus costs $20 monthly, unlocks unlimited GPT-3.5 access, available GPT-4o usage and all exclusive advanced functions with priority new feature access.

Q3: Difference between temporary chat and regular chat?

A3: Regular chats are saved to history and may be used for model training by default. Temporary chats leave no records and will not be used for training, only retained for maximum 30 days for security audit.

Q4: Is ChatGPT Plus worthy of purchase?

A4: It is highly recommended if you need multimodal interaction, plugins, real-time search or frequently handle complex reasoning and coding work. Free version is fully sufficient for casual daily chat and simple text creation.

Q5: Will ChatGPT store my chat contents?

A5: Regular conversations are saved in history by default and may be used for training (you can turn this function off in settings). Temporary chats are not saved. You can delete all historical records manually anytime.

Q6: Why does ChatGPT give wrong answers sometimes?

A6: ChatGPT generates replies purely based on training data without real cognition. Errors or hallucinations occur when data is incomplete, wrong or beyond its training scope. Always verify key information manually.

Q7: Does ChatGPT support Chinese?

A7: Yes, it supports over 100 languages including Chinese. Though its Chinese performance is slightly inferior to English due to data proportion difference, it can fully meet most daily and office demands.