ChatGPT
ChatGPT is OpenAI's general-purpose conversational AI assistant for writing, research, coding, data analysis, and image generation. Available on web, mobile, and desktop across Free, Go, Plus, Pro, Business, and Enterprise tiers.
Use Cases
Answer questions and explain concepts in natural language
Draft emails, posts, code, and documents from short prompts
Analyze and summarize uploaded PDFs, spreadsheets, and images
Generate images directly inside the chat
Research current information with built-in web browsing
Build Custom GPTs that bundle prompts and files into reusable assistants
Pros
Custom GPTs package prompts and data into reusable agents
Million-token context window on Pro tier for long documents
Memory persists across conversations within a workspace
File uploads cover PDF, image, audio, and spreadsheet inputs
Native mobile and desktop apps with the same model access as web
Cons
Free and Go tiers in the US carry ads inside responses
Image generation lags behind dedicated tools like Midjourney
Message caps reset on rolling 5-hour windows even on Plus
Enterprise SSO and admin controls gated behind Business tier
Output quality drifts when long conversations exceed context window
Platforms
Web
Mobile
Desktop
API
Chatbot
Compliance & Certifications
SOC 2
AICPA
ISO/IEC 27001
ISO/IEC
ISO/IEC 27017
ISO/IEC
ISO/IEC 27018
ISO/IEC
ISO/IEC 27701
ISO/IEC
ISO/IEC 42001
ISO/IEC
GDPR
European Union
CCPA / CPRA
State of California
PCI DSS
PCI SSC
FedRAMP
U.S. GSA
What keeps ChatGPT users on ChatGPT isn't the base chat anymore, it's the Custom GPTs they accidentally build for recurring tasks and don't want to recreate elsewhere. The Free tier in the US now runs ads inside responses, which catches off guard anyone who hasn't logged in for a year.
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