
Why Does ChatGPT Make Up Information? (2026)
ChatGPT can invent quotes, dates and references that sound real. Here is why it happens, when it happens most, and a simple checklist to check its answers.

How much does ChatGPT cost? It depends on the plan you pick. The free plan costs $0, ChatGPT Plus costs $20 a month, and ChatGPT Pro costs $200 a month. There are also Team and Business plans for groups, a cheaper ChatGPT Go plan in some regions, and separate API pricing if you want to build ChatGPT into your own app. This guide breaks down every plan, what you get, and which one is worth it for you.

Prices can change over time, and some plans are priced differently by region, so always check the official pricing page before you pay.
The free plan costs nothing and is a real way to use ChatGPT every day. You get access to the standard model with a limited number of messages per day, plus limited use of image generation, file uploads, and voice. When you hit the limit, you wait until it resets.
Free is a good fit if you use ChatGPT a few times a day for simple tasks: drafting emails, answering questions, or brainstorming ideas. It is not a good fit if you use it all day for work, because the message caps will slow you down. Our guide on is ChatGPT free covers the free plan’s limits in more detail.
Plus is the main paid plan for individuals, and at $20 a month it is the plan most regular users should look at first. You get much higher message limits, faster responses at busy times, and access to newer models and features before free users. You can also upload more files, generate more images, and use voice mode more freely.
Plus is worth it if you use ChatGPT daily for work or study. The higher limits alone remove the most annoying part of the free plan: hitting a cap in the middle of a task. It is not worth it if you only use ChatGPT once or twice a week โ in that case the free plan will cover you, and $20 a month is money you can keep.
Pro is the top individual plan at $200 a month โ ten times the price of Plus. It is built for people who use ChatGPT heavily and need the best of everything: the highest message limits, access to the most capable models, and priority access to new features. That means researchers running long tasks, developers working with complex code, and professionals who treat ChatGPT as a core work tool. For most people, Pro is overkill: if Plus already covers your daily use, Pro adds little you will notice. But if you hit Plus limits every day, Pro is the upgrade that removes them.
Team is the plan for small groups โ a business, a class, or a small agency. It is priced per user per month, so check the pricing page for the current rate. Everyone on the team gets Plus-level access, plus a shared workspace and admin controls: the team owner can manage members, set permissions, and keep work data separate from personal use. If you are a solo user, Team has nothing for you โ Plus is cheaper.
Business is the step up from Team for companies that need stronger controls. At about $25 per user per month, it adds advanced admin tools, single sign-on, and tighter data and security settings. Enterprise, with custom pricing, is for organizations with compliance requirements, large user counts, or a need for a direct support relationship with OpenAI โ for that tier, you contact OpenAI and get a quote.
ChatGPT Go is a lower-cost paid tier offered in some countries, priced around $8 a month. It sits between Free and Plus: higher message limits than Free, but lower than Plus, and fewer premium features. It is aimed at users who want more than the free plan but do not need everything Plus offers.
Go is not available everywhere. If you do not see it on the pricing page in your country, it has not launched there yet. For users who do have access, it is a fair middle option โ a real upgrade from Free at less than half the price of Plus.
Go and Plus are built for different users. Go, at around $8 a month, gives you higher message limits than Free, more image generations, and more file uploads โ but the limits are still well below Plus. Plus, at $20 a month, gives you much higher limits, faster responses at busy times, and first access to newer models and features. Pick Go if you use ChatGPT most days but never hit the free limits hard. Pick Plus if you use it for work every day, send long chats, or need the newest models โ with Plus you stop thinking about limits, while with Go you still will, just less often.
Most ChatGPT plans are billed monthly by default, and you can cancel any month โ your chats stay saved. Some plans also offer yearly billing, where you pay for the year up front and the monthly cost works out lower. The saving is only worth it if you are sure you will use the plan all year, so pay monthly for two or three months first and switch to yearly only once you know you use it every week.
The API is a separate product. Instead of paying a monthly fee for the chat app, you pay for the amount of text you send to the model and receive back. Prices are charged per token โ a token is a small chunk of text โ and the rate varies by model.
Here is how to work out what 1,000 short chats would cost. Take one short chat: say your question is about 200 tokens in, and the answer is about 300 tokens out. Multiply the input tokens by the model’s input price per token, and the output tokens by its output price per token, then add the two together โ that is the cost of one chat. Multiply by 1,000 for the total. On a small, cheap model the total stays low; on the largest model it climbs fast. Always check the API pricing page and run this simple maths with the current rates before you build anything.
API pricing matters if you are a developer building ChatGPT into your own website, app, or workflow. For normal chat use, ignore the API and pick one of the monthly plans above. You only need API pricing when you are building software, not when you are chatting.
Match the plan to how you actually use it:
If you are still learning what ChatGPT can do, start with Free and upgrade only when you feel the limits. Our guide on what ChatGPT is used for shows the most common uses, which can help you judge whether a paid plan is worth it for you.
Yes. The free plan costs $0 and gives you basic access to ChatGPT with daily limits on messages and features.
ChatGPT Plus costs $20 per month. It gives you higher limits, faster responses, and access to newer models and features.
For most people, no. Pro is built for heavy users who hit Plus limits every day โ researchers, developers, and professionals who treat ChatGPT as a core work tool. If Plus covers your daily use, Pro adds little you will notice for ten times the price. Only pay $200 a month if Plus genuinely slows you down every day.
ChatGPT Go is a cheaper paid tier, around $8 a month, offered in select regions. It gives you more than the free plan but less than Plus.
No. The API is for developers who build ChatGPT into their own apps. Normal users should pick one of the monthly chat plans instead.

ChatGPT can invent quotes, dates and references that sound real. Here is why it happens, when it happens most, and a simple checklist to check its answers.

ChatGPT can write, explain, plan, code and brainstorm. Here are 15 real uses with example prompts, plus what it should not be used for.

Yes, ChatGPT has a free plan โ and it is genuinely useful. Here is what you get, where the limits sit, and when paying is worth it.