ARTICLE
Free ChatGPT is going unlimited. What actually changes for your business
On 6 August 2026 OpenAI said free ChatGPT accounts move to a newer default model, GPT-5.6 Luna, with unlimited text chats arriving the week after. If you have staff who bounced off ChatGPT because it kept running out, that reason has gone.
On 6 August 2026, OpenAI announced that free ChatGPT users are being moved to GPT-5.6 Luna as their default model, with unlimited text chats and a new Think button following the week after. In plain terms: the version of ChatGPT your team can use without paying anything gets a better model and stops cutting them off mid-task.
Most coverage led on the paid tiers. The part that matters to a small business is the free one. Until now, the honest answer to “should I put the whole team on ChatGPT?” involved a rate limit: free accounts ran out partway through a busy morning and dropped to a weaker model, usually without the person noticing why the answers got worse. Unlimited text chats removes that, though not every limit, and OpenAI is specific about which ones stay.
What actually changed?
Two changes shipped together. Free and Go accounts get GPT-5.6 Luna as their default model instead of the older GPT-5.5 Instant, plus unlimited text chats and a Think button that gives the model more time on a harder question. Plus and Pro accounts get an updated GPT-5.6 Sol, retuned for everyday conversation rather than long technical work, and a slider that controls how much thought ChatGPT puts into each answer.
A note on the names, which are not self-explanatory. Luna is the smaller, faster model; Sol is the larger, more capable one. The Think button and the slider are two versions of the same idea: a control that tells ChatGPT to spend longer on an answer instead of replying immediately.
Source: OpenAI, Improving GPT-5.6 Sol in ChatGPT and expanding access to GPT-5.6 Luna for free users
What do free users actually get?
Unlimited text chats, a newer default model, and the Think button. What free users do not get is unlimited everything. OpenAI’s own wording is blunt about it: “Limits will still apply for file uploads, images and other tools.” So an unpaid account can hold a conversation all day, but it will still hit a ceiling on uploading a stack of PDFs or generating images. OpenAI also notes the unlimited chats are subject to abuse guardrails.
How do the tiers compare now?
| What you get | Free and Go | Plus and Pro |
|---|---|---|
| Default modelafter this update | GPT-5.6 Luna | GPT-5.6 Sol |
| Text chats | Unlimitedfrom the week of 10 August | Unlimited |
| Control over thinking time | Think buttonper message | Sliderweb, mobile and desktop |
| File uploads, images, other tools | Limits still apply | Higher allowances |
Built from OpenAI’s own announcement of 6 August 2026. Plus and Pro keep the stronger model, so paying still buys you something; what changed is that the free tier is no longer crippled by a chat cap.
How much more accurate is it, really?
OpenAI published one number, and it is worth reading carefully. In an internal evaluation of financial, medical and legal prompts requiring factual detail, responses containing at least one factual error were about 62% less common with GPT-5.6 Luna, and 68% less common with GPT-5.6 Sol, than with GPT-5.5 Instant.
Two caveats sit on top of that. It is an internal evaluation, not an independent one, so treat it as the vendor’s own measurement. And fewer errors is not no errors: a model that is 62% less wrong on legal questions is still wrong often enough that you would not send its answer to a client unchecked.
Fewer answers containing at least one factual error
Reduction against GPT-5.5 Instant, on financial, medical and legal prompts requiring factual detail. Higher is better. Source: OpenAI internal evaluation, 6 August 2026.
Does this cost extra?
No. The free tier changes are free, which is the point of the announcement; OpenAI framed it as widening access, noting that every week 1 billion people turn to ChatGPT. Plus and Pro prices are unchanged, and those accounts get the retuned Sol and the slider at no extra charge.
When does it reach my account?
Plus and Pro users got the updated GPT-5.6 Sol and the slider on 6 August. Free and Go accounts move to GPT-5.6 Luna as the default in that same week, with unlimited text chats and the Think button starting the following week. Rollouts reach accounts in waves, so if a colleague has it and you do not, that is normal rather than broken.
Does this change ChatGPT at work?
Not directly. OpenAI was explicit that this version of GPT-5.6 Sol is tuned for everyday chat and is only available in the Chat experience in ChatGPT. The version of Sol that powers ChatGPT Work and Codex is not changing in this release. If your team is on ChatGPT Work, which we covered when it launched, nothing there moves today.
What this means for your business
Take a six-person letting agency where two people pay for ChatGPT Plus and the other four gave up on the free version because it kept running out by lunchtime. From next week those four have a capable model with no cap on conversation, which is enough for drafting tenancy correspondence, turning viewing notes into a summary, rewriting a listing for a different audience, or working out how to phrase an awkward email. That is the bulk of the day-to-day value, and the agency does not pay a penny more for it.
The cost and effort verdict: nothing to buy, nothing to install, about ten minutes to tell your team the caps have changed and to point out the Think button. The honest caveat is that free accounts still hit limits on uploads, images and other tools, so anyone whose work is document-heavy will still want a paid seat. And a model that makes fewer factual mistakes is not one you stop checking, particularly on anything with a number, a date or a legal consequence in it.
What to ignore
Ignore the framing that this makes paid ChatGPT pointless. Plus and Pro still run the stronger model and carry higher allowances on the things free accounts are capped on, so a subscription still earns its money for anyone who lives in ChatGPT all day.
Ignore the model names too. There is a wave of commentary comparing Luna against Sol against whatever a rival shipped this week, and none of it changes what you do on Monday. The useful question is not which model is ahead; it is whether the people in your business have stopped hitting a wall when they try to use one. This week, they have.
What should a small business do next?
Two low-effort steps. First, tell anyone who abandoned free ChatGPT to try it again next week, and show them the Think button, because most people never find it on their own and it is the difference between a shallow answer and a considered one. Second, pick the two or three tasks your team does by hand most often and write one good reusable prompt for each. Unlimited chats are only worth something if people know what to ask; a saved prompt beats a better model almost every time. Our note on OpenAI’s research into how people use ChatGPT at work is a reasonable place to look for candidates, and if you are weighing up paid seats, the way we work with members on exactly this may help.
Where Breezi fits
A better free model is a good week. A prompt, workflow or automation that quietly handles a job nobody has time for is the point. Membership gives you bespoke hours with a senior Ai team every month: you bring the problem, we build the thing that handles it. Lahat Creative, a UK marketing agency, reclaimed up to 30% of their working hours every month doing exactly that. Consultancy does the same at the scale of a team or a whole organisation, the way we did for the financial platform Uphold. We help UK businesses actually use Ai.
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