Why does ChatGPT have a free tier and Plainly does not?

ChatGPT Free runs one small model with a small context window and ads, which holds its cost low enough to offer at $0. Plainly has no advertising and no small-model tier, so the $5 subscription does the funding.

Is training on my data the same as selling it?

No. Training keeps your questions inside the company to improve a future model. Selling hands them to someone else. Some services do both, which is why the policy is worth reading.

Can I use Plainly without paying?

Asking on Plainly is free but limited each month, and unlimited chat is $5 a month. There is no free plan and no free tier.

Is a free plan for AI sustainable?

Not on its own. A free plan has to be funded by ads, by data used for training, or by the subscribers on a paid tier. With none of those three, it has no way to pay for its own answers.

If I am not paying for an AI app, am I the product?

In one of three ways, usually: your attention, your data, or a paying user somewhere else. That does not make every free app predatory, but the funding has to come from something other than you.

Why is there no free AI plan? Someone pays

Free AI plans are not sustainable: free users are funded by ads, by data used to train models, or by other people's subscriptions.

Why is there no free plan?

There is no free plan for AI because every answer costs money to serve, and somebody has to pay for it. Free users are funded by ads, by their own data, or by the subscribers on the paid tier.

At a glance: every free plan recovers its costs through advertising, through training on your data, or through the people paying for a tier above you. Plainly recovers them at $5 a month.

Serving a question to an efficient model costs a fraction of a cent. Serving it to a frontier model costs many times that. Multiply either by millions of people asking all day and the bill runs to millions.

The question is never whether free AI costs money. It's who signs for it.

The three ways free AI gets paid for

Funding route	Who actually pays	What it asks of you
Advertising	Advertisers	Your attention
Your data	The AI company	Your questions become training material
A paid tier	Other subscribers	The free tier stays deliberately limited

Advertising. ChatGPT's free tier now carries ads (OpenAI pricing page, as-of 2026-08-29). Your attention is the thing being sold. You're paying in a currency you didn't choose.

Data used for training. Many free and cheap AI services train on what you send them. That isn't the same as selling your data, and the difference matters. Training keeps your questions inside the company and makes a future model better. A sale hands them to somebody else. Some services do both. Once your question is in the training set, you can't take it back.

A paying tier subsidising the free one. The cleanest of the three, and the one most apps use. The free tier is a demo, capped and trimmed so the paid tier feels necessary. The caps arrive exactly when a task gets interesting. That is a fair trade: you get a real look at the product, and the people who stay pay for it.

None of these is a scandal on its own. Plenty of adults know what they're trading and consider it fair. The problem is being handed a free product with the price tag turned away.

What I would rather do

I'd rather charge $5 and have nothing to explain.

A paid product sells one thing and answers for it. There are no advertisers to keep happy, no training set to feed, no reason to trim a free tier so the paid one looks better. The person using it's the customer, which is the only relationship in the room. When somebody asks why Plainly charges, the answer fits in a sentence.

Plainly has no free plan

Plainly is $5 a month. There is no free plan and no free tier. Asking is free but limited each month, enough to see how it works and not enough to build a habit on. After that it's unlimited chat for $5.

That is a smaller audience than free would bring. Free plans are good at collecting users and poor at funding the answers they ask for.

What the small allowance costs you

The free allowance is small on purpose, and that costs you something. You can't put Plainly through months of daily use before deciding. The $5 isn't frictionless either: over a year it's $60.

The other limit is that charging proves nothing by itself. A subscription can sit on a bad product, and a free service from a company that is straight about its trade can be perfectly good. What the money changes is who the product answers to.

If price is what you're weighing, free vs $5 vs $20 sets the three side by side, and what is the catch with cheap AI answers the suspicion that a cheap ChatGPT alternative is hiding something. Is a $5 AI subscription good enough covers what the money buys, and is Plainly for me answers whether this is your tool.