Discover OpenAI's most capable o3-pro model with enhanced reasoning, tool integration, and benchmark performance for coding, math, and science tasks.
Great for most routine tasks and fully multimodal – what GPT-4o is and when to use it
Creative wordsmith or speedy multitasker – choosing between GPT-4.5 (Research Preview) and GPT-4o for your needs
Complex multi-step reasoning made easier – what OpenAI o3 is and when to choose this model
ChatGPT’s best-at-reasoning model – o3-pro delivers ultra-reliable answers when accuracy matters most
Fast fixes or in-depth solutions – understanding OpenAI’s o4-mini and o4-mini-high models for programmers and problem-solvers
GPT-4.5, o3, and more – what each ChatGPT subscription tier offers and how to get the model you need
Comparing ChatGPT’s GPT-4 and GPT-3.5 models to help you balance intelligence, speed, and cost
Organize your chats, files, and workflows with OpenAI’s new “Projects” feature in ChatGPT
Step-by-step: Creating a new Project in ChatGPT and customizing it with files and instructions
Using ChatGPT’s attachments to have the AI read PDFs, images, spreadsheets, and more
Understanding ChatGPT’s attachment limits – supported formats, file size caps, and tips for smooth file analysis
