What ChatGPT is
ChatGPT is a chat assistant from OpenAI, launched in November 2022. It runs in the browser, in desktop apps for Windows and macOS, and in apps for iPhone and Android. Under the hood it uses OpenAI's GPT models. In September and October 2026 OpenAI rolled out the GPT-6 family, starting with paid plans and then reaching Free and Go users, along with a new "Intelligent UI" that mixes text, visuals and interactive elements in answers.
OpenAI changes model names and plan contents often. Rather than chase model version numbers, this review focuses on what you can do with each plan and what it costs today.
Key features
Chat, writing and reasoning
The core is a chat that drafts, rewrites, summarizes, explains and brainstorms. ChatGPT picks between a fast model and a slower reasoning model depending on the question, and paid plans let you choose deeper reasoning when you need it.
Search and deep research
ChatGPT can search the web and show sources. Deep research runs a longer, multi-step investigation and returns a report with citations. Free users get a small allowance; Plus and Pro get much more.
Images, voice and vision
You can create and edit images, talk to ChatGPT in voice mode, and show it photos, screenshots or your camera. These media features are one of the clearest differences from rivals like Claude.
Memory, projects and custom GPTs
Memory lets ChatGPT remember facts you tell it and refer to past chats; you can view, edit or turn it off. Projects group chats and files. Custom GPTs are shareable assistants with their own instructions and files.
Agents and Codex
ChatGPT's agent can carry out multi-step tasks in a virtual computer, such as filling forms or researching and compiling a spreadsheet, asking before anything important. Codex is OpenAI's coding agent, available in ChatGPT, a command line tool and editors. OpenAI also makes Atlas, a web browser with ChatGPT built in.
Connected apps
ChatGPT can connect to services such as Google Drive, Gmail, calendars and many third-party apps, so it can search your files or act in those services when you allow it.
Pricing (as of October 2026)
OpenAI's pricing page blocks automated checks, so the figures below come from OpenAI's help center and several pricing trackers that agree, checked October 2026. Confirm on OpenAI's page before buying, as OpenAI adjusts plans often.
| Plan | Price (US) | What you get |
|---|---|---|
| Free | $0 | Limited messages, uploads, image creation and deep research. Ads in the US. |
| Go | $8/month | More messages, uploads, images and memory than Free. May show ads. |
| Plus | $20/month | Much higher limits, advanced reasoning, deep research, projects, custom GPTs, Codex, agent, no ads. |
| Pro | From $100/month ($200 tier for more usage) | The highest limits and the strongest "Pro" reasoning model, for heavy daily use. |
| Business | Reported from $25/user/month ($20 billed yearly) | Shared workspace, admin controls, SSO, no training on your data by default. 2-seat minimum. |
| Enterprise | Custom | More admin and security controls, data residency, SCIM, support agreements. |
A $500 Pro tier was reported in early October 2026; we could not confirm it from OpenAI directly. Students and some countries get regional pricing.
Strengths
- Breadth. Chat, search, research, images, voice, vision, agents, coding and a browser in one subscription.
- A cheap entry plan. Go at $8 a month is cheaper than the entry paid plan of most rivals.
- Polished apps. Desktop and mobile apps are mature, and voice mode is widely praised.
- Ecosystem. Custom GPTs, connected apps and broad third-party support mean most tools work with ChatGPT.
- Fast improvement. OpenAI ships new models and features frequently, and Plus users usually get them early.
Weaknesses
- Ads on cheaper plans. Since early 2026, OpenAI shows ads to logged-in adult users on the free plan in the US, and Go may show them too.
- Still makes things up. Like every chatbot, it can state wrong facts confidently. Sources help but are not always read carefully by the model.
- Constant change. Model names, limits and plan contents change often, which makes it hard to know what you are paying for month to month.
- Writing can feel generic. A common user complaint is a recognizable "ChatGPT style" in drafts unless you give it firm style guidance.
- Pro is expensive. The jump from $20 to $100 or more is steep if Plus limits are not quite enough.
Privacy and security
What OpenAI states, as of October 2026:
- On personal plans, chats may be used to improve OpenAI's models unless you switch off model improvement in Settings, Data controls.
- Temporary chats do not appear in history, do not use memory, and are not used for training.
- Memory can be viewed, edited or switched off.
- Business and Enterprise data is not used for training by default, and those plans add SSO and admin controls; Enterprise adds data residency options.
- When it introduced ads in 2026, OpenAI said conversations are kept private from advertisers.
Be aware that turning off certain data settings has affected chat history in the past, so read the settings descriptions before changing them.
Platforms
- Web: chatgpt.com
- Desktop: Windows and macOS apps, plus the Atlas browser
- Mobile: iPhone, iPad and Android
- Codex: in ChatGPT, a command line tool and code editors
- Developers: the separate OpenAI API, billed by usage
Alternatives
- Claude: often preferred for writing and long documents. See Claude vs ChatGPT.
- Google Gemini: strong if you use Google Workspace. See Gemini vs ChatGPT.
- Microsoft Copilot: built into Windows and Microsoft 365. See Copilot vs ChatGPT.
- Perplexity: better for quick, sourced answers to research questions.
Which plan should you pick?
Free is fine for occasional questions and drafting, if you accept ads and lower limits. You still get search, some image creation and a taste of deep research.
Go suits people who use ChatGPT most days for everyday chat and want more messages and memory without paying $20. It is not the plan for heavy research or the strongest reasoning.
Plus is the plan most regular users end up on: the better reasoning models, much higher limits, deep research, agent tasks, Codex and no ads. If ChatGPT is part of your daily work, start here.
Pro only makes sense if you regularly hit Plus limits, run long research or coding sessions all day, or need the top "Pro" reasoning model. Business is the right choice for teams handling company data, mainly for the admin controls and because data is excluded from training by default.
Who should use ChatGPT
ChatGPT is a sensible default for anyone who wants one AI tool for many jobs, especially if images, voice or agent tasks matter to you. Try the free plan; move to Plus if you use it daily. Go is a reasonable middle step if cost matters more than ads. Pro is only worth it for people who would otherwise hit Plus limits every day.
If your priority is careful writing, strict sourcing, or keeping your data out of training without touching settings, compare Claude, Perplexity or a business plan first.