Grammarly vs ChatGPT
Plans, free access, limits and intended use side by side, taken from each vendor’s own pages. No score and no winner: the facts show where the two differ.
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Real-time grammar, tone and AI writing help inside the apps where you already type.
An assistant for drafting, files and web research.
- Free access
- Grammarly: Free access
- ChatGPT: Free access
- Paid from
- Grammarly: USD 12 per member per month
- ChatGPT: No fixed price listed
- Plans listed
- Grammarly: 3
- ChatGPT: 8
- Public API
- Grammarly: Not confirmed
- ChatGPT: Yes
Where Grammarly and ChatGPT differ
- Pricing checkPrices confirmed for Grammarly; pricing review due for ChatGPT.
- PlansGrammarly lists 3 plans and ChatGPT lists 8.
Head to head
Each value from the tool’s profile and the vendor’s own pages
| Grammarly | Fact | ChatGPT |
|---|---|---|
| Access and price | ||
| Free access availableFree · USD 0 | Free accessSame | Free access availableFree |
| USD 12 per member per monthPro · billed yearly · USD 30 billed monthly | Lowest listed paid plan | No fixed price listed |
| Free plan; Pro from USD 12; Enterprise custom | Pricing model | Free; Go EUR 8 (local price); Plus USD 20 |
| 3 | Plans listedDiffers | 8 |
| Not confirmed | Public API | Yes |
| Not confirmed | Card to start | Not confirmed |
| Not confirmed | Open source | No |
| What it is for | ||
| Correcting and polishing everyday writing | Built for | General drafting, files and everyday research |
| Writing & content | CategorySame | Writing & content |
| Platforms |
|
| Works with |
|
| How current | ||
| Profile sources checked | ||
| Prices confirmed · Sep 26, 2026 | Pricing checkDiffers | Pricing review due · Sep 24, 2026 |
Official source check for both tools. No hands-on testing and no score: “Differs” marks a documented difference, not a better tool.
Plans and prices
Grammarly
Prices confirmed · Sep 26, 2026- FreeUSD 0EUR 0 shown
- ProUSD 12 per member per monthbilled yearly · USD 30 billed monthly
- EnterpriseContact provider
ChatGPT
Pricing review due · Sep 24, 2026- FreeFree
- GoEUR 8 per month
- PlusUSD 20 per month
- Pro $100USD 100 per month
- Pro $200 (Pro 20x)USD 200 per month
Show 3 more plans
- Business (Standard seat)USD 20 per seat per monthbilled annually · USD 25 billed monthly
- Business (Premium seat)USD 100 per seat per monthbilled annually · USD 125 billed monthly
- EnterpriseCustom pricing
Strengths and limits
Grammarly
Strengths
- Works where you already write: The same suggestions run in browser extensions, desktop apps, Office and Google Docs add-ins and mobile keyboards.
- Usable free tier: Free has no time limit and includes spelling, grammar, tone detection and a monthly prompt allowance.
- Flexible Pro billing: Pro can be paid monthly, quarterly or yearly per member, and a team account can grow to 149 seats.
Limits to plan around
- Refunds only where law requires: You can cancel at any time, but paid time is refunded only when local law requires it.
- Review agents are paid: Plagiarism Checker, AI Detector and Citation Finder need Pro, and Free gets a single AI Grader scan a day.
- Own rewrites can trip the detector: Text rewritten by Grammarly's agents is likely to be flagged by its AI Detector.
ChatGPT
Strengths
- Many kinds of work in one assistant: Drafting, file analysis, image generation, voice and web research share one account.
- Unlimited basic chats on Free: The Free plan has no cap on text chats with the basic model.
- Projects organize related work: Chats, files and instructions for an ongoing job stay together.
Limits to plan around
- No annual discount for individuals: Go, Plus and Pro are billed monthly only; annual pricing is limited to Business seats.
- Pro $200 closed to newcomers: New sign-ups and upgrades to the 20x tier are paused; existing subscriptions keep renewing.
- Go pricing is regional: Go may include ads. Its January 2026 US launch quote was $8 monthly; confirm today's local checkout amount before subscribing.
See both products
Start from your task, not from a winner.
Run both tools on the same real task, then compare the result, how much editing it needs and how fast it uses your plan’s allowance.
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Comparing tools from different categories is fine, and often useful — a writing assistant and a research tool solve different halves of the same job. The table will show you exactly where they diverge.
Questions about comparing tools
How does the comparison work?
Add two tools to the comparison tray from any tool card, then open this page. The table pulls each tool's verified plan details, platforms, strengths and limits from its profile, so both columns carry the same kind of evidence, with a separate source-check date for each tool.
Do you declare a winner?
No. The table sets two tools against each other on documented facts, not on a score. Which one wins depends on your task, your budget and your usage volume — three things we cannot see from here.
Why are some cells empty or marked unverified?
Because we could not confirm that detail on the vendor's own pages. Rather than filling the gap with a figure from elsewhere, we mark it and say why on the tool's profile.
Can I compare more than two tools?
Not at once. Two columns keep the differences readable and force a real decision. Remove either selected tool to replace it, or clear both to start a new pair.
Every figure in the table above comes from the linked profile, where the source and the verification date are listed. Browse all tools or read the editorial policy.