ChatGPT Review (2026): Still the World's Most Popular AI Tool - and for Good Reason

What is ChatGPT and why did it become so famous?

ChatGPT launched in November 2022, made by a company called OpenAI. Within two months it had over 100 million users - at the time, the fastest-growing consumer application in history. The reason was simple: it was the first time most people had used an AI that could hold a real conversation, write coherently, and handle a wide range of tasks. It felt genuinely different from anything before it.

That moment of recognition - "oh, this is actually useful" - is still the experience most people have on their first serious session with ChatGPT. It handles questions, helps you write things, explains complicated topics, brainstorms ideas, and does dozens of other tasks without you needing to learn any commands or special language. You just type what you want.

OpenAI has continued updating ChatGPT significantly since launch. The current free version runs on GPT-5, which handles everyday tasks well. The Plus tier ($20/mo) unlocks GPT-5.5 - a noticeably more capable model - along with Sora video generation, Deep Research, Agent Mode, and no ads.

What can you do with ChatGPT?

The honest answer is: a lot. Writing, research, analysis, coding, mathematics, language learning, brainstorming, summarising, translating - the range is broad. For a beginner, the most immediately useful things tend to be:

Getting help with writing. Emails, cover letters, essays, social media posts, difficult messages you have been putting off. Ask ChatGPT to draft something and then refine it together until it sounds like you.

Getting explanations. Ask it to explain anything you do not understand - a news story, a medical term, a clause in a contract, how something works. It usually does this clearly and without being condescending.

Voice conversations. This is a genuine standout feature. Open the ChatGPT app on your phone, tap the microphone, and you can have a spoken conversation with the AI - interrupting it, asking follow-up questions, switching topics. It is useful when you are doing something else and want to think through a problem, or just find typing inconvenient.

Creating images. On the Plus plan, you can describe an image in words - "a vintage travel poster of Tokyo in the style of the 1950s" - and ChatGPT will generate it. The results are often impressive and it is genuinely fun to explore.

Who is ChatGPT best for?

Free vs Plus - what actually changes?

The jump from free to Plus is noticeable. The free tier runs GPT-5 standard, which handles everyday tasks well, but Plus unlocks GPT-5.5, Sora video generation, Deep Research, and Agent Mode. One other thing to know: the free version includes ads in the interface - sponsored content appears alongside your conversations. The paid Plus tier ($20/mo) removes ads and unlocks the full suite. If you plan to use ChatGPT regularly, the upgrade is worth it.

Can you trust what ChatGPT tells you?

Mostly, but with important caveats. ChatGPT is generally accurate on broad factual questions and very good at tasks that do not require exact facts - writing, explaining, brainstorming. Where it can go wrong is on specific details: names, dates, statistics, recent events, and anything requiring specialist knowledge like medicine or law. It can also "hallucinate" - which is the term for when an AI confidently states something that is simply wrong. It does not do this constantly, but it happens often enough that you should verify anything important.

The practical rule: use ChatGPT as a starting point, not a final authority. It is excellent for getting a first draft, an initial understanding, or a range of options to consider. For anything that matters - a medical decision, a legal question, an important financial choice - always check with a qualified professional.

How to get started with ChatGPT

For the mobile app, look for the microphone icon in the text box to try voice mode. You can also tap the headphones icon in the top right for the more advanced voice conversation experience.

The honest limitation to know about

AI tools including ChatGPT can sometimes give confident answers that are wrong. This is not unique to ChatGPT - all AI tools have this characteristic - but it is worth knowing before you start. The more specialised or fact-specific the question, the more important it is to double-check. For everyday tasks like writing and explaining, accuracy is generally good. For anything where being wrong would have real consequences, verify.