Three assistants, all charging about twenty dollars a month, all claiming to be the best one. If you are paying for one of them and wondering whether you picked wrong, this is the comparison without the hype.
Short answer up front: at the $20 tier they are close enough that the deciding factor is usually what else comes bundled and which ecosystem you already live in — not raw capability.
What each tier costs
| Tier | ChatGPT | Claude | Gemini |
|---|---|---|---|
| Free | Yes, limited | Yes, limited | Yes, limited |
| Entry paid | Go — $8/mo | — | AI Plus — $4.99/mo |
| Standard | Plus — $20/mo | Pro — $20/mo ($17 annual) | AI Pro — $19.99/mo |
| Power | Pro — $100/mo | Max — from $100/mo | AI Ultra — from $99.99/mo |
| Top | Pro Max — $200/mo | Max 20× | AI Ultra — $199.99/mo |
Notice that only Claude offers an annual discount at the standard tier — $17 a month paid yearly. Over a year that is $36 saved, which is not nothing but is not a reason to choose either.
Notice also that Gemini has a genuinely cheap entry tier at $4.99. If you use an assistant a few times a week rather than a few times an hour, that tier is worth looking at before defaulting to $20.
The free tiers, honestly
All three free tiers exist to run you into a wall.
ChatGPT free gives you a small number of top-model messages in a rolling window, then quietly drops you to a smaller model — and the drop is not always obvious, which is the frustrating part. Claude free uses session and weekly limits that tighten when demand is high, so the same usage can feel generous one day and stingy the next. Gemini free runs on compute-based limits that reset every few hours, and it bundles 15 GB of storage.
For occasional use, any of them is fine. The moment you find yourself planning your day around a usage window, you have outgrown free.
What actually differs at $20
Capability at this tier is closer than the marketing suggests. Where they genuinely separate:
Bundled extras. This is the biggest real difference. Gemini AI Pro includes 5 TB of cloud storage — that alone is worth roughly what a comparable storage plan costs, so the assistant is close to free if you were paying for storage anyway. Claude Pro bundles its coding and terminal agent tools at the same $20. ChatGPT Plus is the most self-contained of the three.
Context window. Gemini 3.1 Pro handles up to a million tokens — roughly 1,500 pages of text. If your work involves dropping in an entire codebase, a book, or a year of documents and asking questions across all of it, that is a category difference rather than a percentage one.
Usage limits. ChatGPT publishes a concrete number at Plus: 160 top-model messages every three hours. Claude uses a weekly cap plus a five-hour session cap. Gemini scales its free limits by roughly four times. Concrete numbers are easier to plan around, which is a small point in ChatGPT’s favour.
Data defaults. ChatGPT and Gemini train on consumer conversations by default. Claude makes it a choice at signup, with 30-day retention if you decline. If you paste client material or anything under NDA, check this setting in whichever you pick — all three let you change it, but the default differs.
Which one for which job
| If you mostly… | Look at | Why |
|---|---|---|
| Write and edit prose | Claude | Consistently the least generic-sounding output of the three |
| Work across huge documents | Gemini | The million-token window is not matched at this price |
| Live in Google Workspace | Gemini | Docs, Sheets, Gmail integration plus 5 TB storage |
| Want the widest tool ecosystem | ChatGPT | Largest third-party integration surface, most tutorials |
| Write code | Claude | Coding agent bundled at the same $20 |
| Generate images alongside text | ChatGPT or Gemini | Both include image generation; Claude does not |
| Use it a few times a week | Gemini AI Plus | $4.99 covers light use without the $20 commitment |
The advice most people actually need
Stop optimising this decision.
The gap between these three at $20 is smaller than the gap between someone who has learned to prompt well and someone who has not. If you are switching subscriptions every two months chasing a benchmark, that time would return more if you spent it getting better at the tool you already have.
Pick on bundled extras, since those are concrete and the capability differences are not. If you need cloud storage, Gemini pays for itself. If you write code, Claude includes tooling worth the subscription on its own. If neither applies, ChatGPT’s ecosystem breadth is a reasonable default.
Should you pay $100 or $200?
Only if you are hitting limits daily and that is costing you real working hours.
The higher tiers do not make the assistant smarter in a way most people notice — they mostly remove the ceiling and add faster access to heavier reasoning modes. If your usage pattern is “several long sessions a day, every day, and the cap interrupts me,” the maths works. If it is “occasionally I hit a limit and wait twenty minutes,” it does not.
Frequently asked questions
Can I run more than one?
Yes, and a common setup is one paid subscription plus the free tier of another as a second opinion. Two paid subscriptions is rarely justified unless you are using them for genuinely different jobs.
Which is best for a small business?
If you are on Google Workspace already, Gemini, because the integration and storage remove other line items. Otherwise it depends on whether your team writes more code or more prose.
Do the annual plans lock me in?
Claude’s $17/month annual rate requires paying for the year. Given how fast this market moves, monthly is defensible even at the higher price — the $36 you save is small next to the cost of being stuck on the wrong tool for eight months.
Are the usage limits going to change?
Almost certainly. All three have adjusted limits repeatedly. Treat any specific number, including the ones on this page, as a snapshot rather than a guarantee.
What about privacy?
Check the training setting in whichever you choose, because the defaults differ. For anything confidential, business and enterprise tiers across all three offer stronger data commitments than consumer plans.
The bottom line
At $20 these are three good tools with different bundles attached. Choose on the bundle — storage, coding tools, ecosystem — because that difference is real and measurable, and then spend your remaining energy on using it well rather than on whether you picked correctly.
Pricing and limits verified August 2026. This market changes monthly; confirm current terms on each vendor’s page. More comparisons in our artificial intelligence section, and see also Notion vs Obsidian.
Tools worth your time, tested
New comparisons and fixes as we publish them, with pricing kept current. One email a week at most.
Leave a Reply