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I'm amazed most people use ChatGPT every day without knowing its most important features.

Cheeta · 2026-07-30 · 2 min read · treechat · tx a3dfa3…a6b8 · block 960,164

I'm amazed most people use ChatGPT every day without knowing its most important features. Here are 25 ChatGPT terms that will instantly make you a smarter AI user.

  1. Prompt is the instruction you give ChatGPT to generate an output.
  1. Custom Instructions let you define your preferred tone, style, and goals.
  1. Personalisation helps ChatGPT adapt responses using your preferences and settings.
  1. Custom GPTs are specialized AI assistants built for specific tasks.
  1. Projects organize chats, files, instructions, and context into one workspace.
  1. Memory helps ChatGPT remember useful information across conversations.
  1. Agents can reason, browse, use tools, and complete multi step tasks.
  1. Deep Research performs in-depth research with detailed reports and sources.
  1. Canvas provides an interactive workspace for writing, coding, and editing.
  1. Tempire keeps long term memories, summaries, and monitoring in one place.
  1. Voice Mode lets you talk to ChatGPT using natural conversations.
  1. Context Window is the amount of information ChatGPT can process at once.
  1. Conversation History stores past chats for continuity and personalization.
  1. Temporary Chat creates sessions without saving history or affecting memory.
  1. Reasoning Models are optimized for analysis, planning, logic, and complex problems.
  1. Multimodal Input allows text, images, voice, files, and more in one conversation.
  1. File Upload lets ChatGPT analyze PDFs, spreadsheets, images, and documents.
  1. Connectors connect ChatGPT with external apps, tools, and services.
  1. Hallucination is when AI generates information that sounds correct but is inaccurate.
  1. GPT Store is where you can discover and use Custom GPTs created by others.
  1. System Prompt contains hidden instructions that guide the AI's behavior.
  1. Tokens are the units of text processed by AI models.
  1. Inference is the process where the AI generates responses from your input.
  1. RAG retrieves relevant external information before generating answers.
  1. Tool Use enables ChatGPT to browse, research, code, analyze files, and access connected tools.

To learn more, check the infographic.