Free AI is enough if you use it for short questions, emails and the odd image. Pay only when you work with long documents, many files, or tasks where a wrong answer costs you money.
In Algeria there is a second question: can you even pay? The $20 plan costs about 4,800 DZD a month at the real exchange rate, and your CIB or Edahabia card can't pay it.
This guide shows what the free plans take away, what paying does not fix, and how to work out if the subscription pays for itself. Every number links to its source.
What does the free version of AI take away?
The free plan is not a smaller copy of the paid one. It is a different product with the same logo. It takes away three things, and it never tells you when.
1. Memory. A context window is how much text the AI can read and keep in mind at once. It is counted in tokens, small pieces of words. Free Gemini holds 32,000 tokens, about 50 pages. Gemini AI Pro holds 1 million tokens, about 1,500 pages (Google, 2026).
Think of a waiter who can remember 3 orders, serving a table of 10. He will not tell you he forgot 7 orders. He just brings 3 plates, smiling.
Give free Gemini your 60 page supplier contract and it answers about the part it kept, just as sure of itself.
2. The model. Free plans send you to the small, fast model, either from the start or once you use up your daily allowance. It is not stupid. It is built for speed, not for hard problems.
3. Capacity. Free limits reset on a timer. So the tool stops right when you are deep in your work, which is exactly when you need it most.
How big is the gap between free and paid AI plans?
Bigger than most people think, and the companies do not publish everything.
| Tool | Free plan | Paid plan | What it means |
|---|---|---|---|
| Gemini | 32,000 tokens, 50 sources per notebook | AI Plus: 128,000 tokens, 100 sources. AI Pro ($19.99): 1 million tokens, 300 sources | Pro reads 31 times more at once |
| Claude | Not published | Up to 1 million tokens on Sonnet 5.5 and Opus 5.5 | Anthropic does not publish the free limit |
| ChatGPT | Shown per plan on OpenAI's pricing page | Higher on Plus and Pro | The limits changed several times in 2026, so test your own task |
Gemini figures: Google, 2026 and 9to5Google, July 2026. Claude: Claude Help Center, October 2026.
Look at the 50 sources line. "Let me drop 50 PDFs in and analyse them" is not a rare case on the free Gemini plan. It is the exact ceiling.
Is the free AI model less accurate?
Yes, and the gap is bigger than it looks.
On GPQA Diamond, a hard science reasoning test, Gemini 3.1 Flash-Lite scores 86.9% and Gemini 3.1 Pro scores 94.3% (Bind AI, March 2026).
Seven points sounds small. Now count the mistakes instead.
The small model gets about 13 questions out of 100 wrong. The big one gets about 6 wrong. The small model makes twice as many mistakes.
It is like two students who score 87 and 94 on the same exam. They look close. But one makes twice as many errors, and writes the wrong answers in the same neat handwriting as the right ones.
That is the real danger. Nobody gets hurt by an AI that says "I don't know". You get hurt by the one that is wrong, calmly, on your stock count.
Does paying for AI stop it from training on your data?
No. This is the most common mistake people make with AI subscriptions.
The line is not free versus paid. The line is personal plan versus business plan.
| Plan type | Examples | Used to train the AI? |
|---|---|---|
| Personal (consumer) | ChatGPT Free, Go, Plus, Pro. Claude Free, Pro, Max | OpenAI: yes, unless you switch it off. Claude: you choose in settings |
| Business | ChatGPT Business and Enterprise, Claude for Work | Not by default |
| API (how two apps talk to each other) | OpenAI API, Claude API | Not by default |
Sources: OpenAI data usage FAQ, Anthropic, August 2025.
On ChatGPT, switch off "Improve the model for everyone" under Settings, Data controls. Note that clicking thumbs up or down can still share that whole conversation, even after you opt out (OpenAI).
So if your prompts contain your supplier list, your margins or your clients' data, a $20 personal plan does not protect them. You need a business plan or the API.
How much does ChatGPT Plus really cost in Algeria?
About 4,800 DZD a month, because you pay at the street rate, not the official one.
| Line | Amount |
|---|---|
| Official Banque d'Algérie rate, 10 October 2026 | 134.66 DZD for $1 |
| Square Port Saïd selling rate, 10 October 2026 | 240.33 DZD for $1 |
| $20 a month at the street rate | about 4,800 DZD a month |
| The same for a year | about 57,700 DZD |
| Average net salary (ONS survey, 2022) | 43,500 DZD a month |
| Minimum wage (SNMG) since January 2026 | 24,000 DZD a month |
Rates: exchangedz, 10 October 2026. Salary: ONS via Algérie Eco, 2025. SNMG: APS, 2026.
This explains the resellers. If someone sells you a Plus account for around 4,800 DZD, they are not overcharging. That is simply $20 at the street rate.
Why can't you pay for AI with a CIB or Edahabia card?
CIB and Edahabia cards are tied to a dinar account and work inside Algeria. They can't pay OpenAI, Google or Anthropic.
To pay a foreign subscription legally, you need an international card on a foreign currency account. For most people, the only legal source of that currency is the travel allowance: 750 EUR a year.
Since 19 July 2026, Banque d'Algérie Instruction 07-2026 sets these rules for it (Algérie Eco, July 2026):
- It is loaded on an international card in your name, valid at least three years.
- You need a passport, a ticket, a visa if required, and proof of income.
- The trip must last at least seven days.
- Misusing it costs you the right for five years.
So the only legal way to get hard currency means leaving the country for a week. A $240 yearly subscription eats about 29% of that 750 EUR, at the official rates of 10 October 2026 (exchangedz).
That is why many people use resellers or shared accounts. But then your prompts sit in an account you do not control. You fix the payment problem and create a data problem.
There is a cleaner route if you freelance. A registered self-entrepreneur can keep foreign earnings in a foreign currency account. I explain how in the self-entrepreneur card guide.
When is paying for AI worth it?
When it saves you about 19 hours a month. Here is the maths.
The legal work week is 40 hours, about 173 hours a month. At the average net salary of 43,500 DZD, one hour of your time is worth about 251 DZD. The plan costs about 4,800 DZD.
So it pays for itself if it saves you about 19 hours a month, a little under one hour per working day.
Then be honest about how you work:
- Stay free if you write a few emails, ask short questions and make an image or two a week. You will never hit the ceiling.
- Pay if you often handle documents over 40 or 50 pages, more than 50 files at once, or work where a confident wrong answer costs you stock or money.
- Pay for the right plan. A personal plan buys capacity. Only a business plan or the API keeps your data out of training by default.
What mistakes do people make with AI plans?
- Paying for Plus to protect their data. Plus is a personal plan. It does not change how your data is used.
- Sharing one account with friends or a reseller. Everyone in that account can read your conversations.
- Trusting a free plan's answer on a long document. If the document is longer than the context window, part of it was never read.
- Choosing a plan from benchmarks. Your own hardest task is the only test that matters.
What should you do this week?
- Today: take the hardest thing you did with AI last month and run it again on the free plan.
- Watch for two signs: it forgets something you said 20 minutes ago, or it skips part of a long document.
- If it never stumbles: stay free. You do not have a capacity problem.
- If it stumbles weekly: count the hours it would save. Over 19 a month, pay.
- If your prompts hold client data: switch off training in settings today, and look at a business plan.
Thinking about AI agents instead of a simple chat plan? Read AI agents vs chatbots first. Most tasks don't need one.