Summary  

ChatGPTs an AI-powered chatbot developed by OpenAI, designed to assist with a variety of tasks, such as answering questions, generating content, summarizing information, and more. Learn about the latest models and capabilities.

Features & Options 

• Multilingual support: ChatGPT can answer questions, help with learning, assist in coding, brainstorm ideas, and more, in a wide variety of languages.
• Data privacy: Avoid sharing sensitive personal data. OpenAI may review chat history for the purpose of improving the services. For more details, refer to ChatGPT’s Help Center.
• Accuracy warning: Be cautious when seeking precise information—ChatGPT may occasionally provide inaccurate or imprecise responses. Always verify facts from reliable sources.
• Image generation metadata: Images created with ChatGPT or through the OpenAI API include metadata using C2PA specifications, which work like a digital certificate to show where the image originated, helping users identify AI-generated content.

How to Obtain & Log in 

• ChatGPT is available for free at https://openai.com/chatgpt. You can access it via the web interface or by downloading the ChatGPT mobile app.
• A paid subscription for GPT-4.5 and premium features is available at https://openai.com/chatgpt/pricing/. Check with your unit or department of study before purchasing for work or learning purposes. 
• ChatGPT is coming soon at a fraction of the commercial subscription. Check back soon for updates.

Learning Resources

• AI & Student Writing from the Center for Educational Effectiveness at UC Davis  
• UC Davis ChatGPT Resources
• Prompt Literacy from the University of Michigan

Security Considerations 

Visit Sensitive Data & AI – Guidance from UC Davis Tech Leaders 

Frequently Asked Questions 

• What’s the difference between ChatGPT-4, GPT-4.5, and GPT-4.5-mini?

• GGPT-4 is a text-only model with limited multimodal capabilities, mainly used for text generation. It is available to paid subscribers.

  GPT-4.5 (also referred to as GPT-4o) is designed for multimodal capabilities (text, image, and audio inputs/outputs) with enhanced real-time conversation, better cost efficiency, and support for over 50 non-English languages. It’s available with a free tier (with usage limits) and a premium version for paid users.

  GPT-4.5-mini is a lightweight model optimized for free-tier users. It’s faster and more cost-efficient compared to GPT-3.5, providing improved performance and enhanced intelligence while maintaining similar speed to GPT-3.5.

• How does OpenAI use my personal data?
• OpenAI's large language models are trained on a broad corpus of text that includes publicly available content, licensed content, and content generated by human reviewers. They say they don’t use data for selling their services, advertising, or building profiles of people—instead using data to make their models more helpful for people. ChatGPT, for instance, improves by further training on the conversations people have with it, unless you choose to disable training.
• What is a hallucination?
• A hallucination refers to when ChatGPT produces outputs that seem plausible but are incorrect or fabricated. To minimize the likelihood of hallucinations, be as specific as possible with prompts. For example, you might say, “You are an expert in public speaking,” to guide the model toward more accurate and relevant responses.

Technical Support

For any technical issues, visit: https://help.openai.com/

Content on this website is subject to change as AI tools continue to develop. Page last updated March 7, 2025.