Words Per Go vs Uses Per Day
Free paraphrasers meter you in one of two ways, and the distinction decides which one survives a real assignment.
- A cap on length, unlimited uses. QuillBot and Scribbr let you paraphrase as often as you like, but only 125 words at a time. Fine for a tricky sentence, punishing for a full section.
- A cap on uses, unlimited length. Wordtune gives 10 rewrites a day with no stated word ceiling per rewrite, so a long paragraph counts the same as a short one.
Match the meter to the job. If you are rewording individual sentences as you write, unlimited uses wins. If you have a finished draft and want to improve whole paragraphs, a daily allowance with no length cap wins — even at ten uses.
One practical habit before you start: know your word counts. 125 words is roughly one short paragraph, and Word Counter tells you instantly how many chunks your text will need.
The Free Tiers, Tool by Tool
QuillBot 125 words, unlimited goes
The market leader, and its free limits are specific. QuillBot's help centre states that free users can paraphrase up to 125 words at a time, as many times as they like, with no daily limit. Free also restricts you to 2 of its 9 modes — Standard and Fluency: Standard swaps synonyms and reorders words, Fluency smooths readability. Premium unlocks unlimited word count, all 9 modes and custom modes.
Premium pricing from QuillBot's own FAQ: $19.95 monthly, or $99.95 billed annually — about $8.33 a month. For a student writing weekly, the annual price is the honest comparison point against the free tier's friction.
Scribbr 125 words, no signup
Scribbr's paraphrasing tool matches QuillBot's ceiling — 125 words per input on the free plan — with one meaningful advantage: no signup or registration, and you can use it as many times as you want. Paste and go.
If your use case is "I need to reword this paragraph right now and I do not want another account," this is the fastest route in the article. The limitation is the same 125 words, so it changes the friction of starting, not the friction of a long document.
Wordtune Best for long paragraphs
Wordtune's free Basic plan gives 10 rewrites and AI suggestions per day, 3 AI summarisations per month, and unlimited spelling and grammar checks. Its pricing page lists no word or character limit per individual rewrite at any tier.
Ten a day is not many, but each one can be a full paragraph rather than 125 words, and the counter resets every morning. Across a week that is 70 rewrites — comfortably more throughput on long text than 125-word slices. Paid tiers are Advanced at $6.99/month (30 rewrites a day) and Unlimited at $9.99/month, both roughly 30% cheaper billed annually.
Grammarly Not really a paraphraser on Free
Worth including because students reach for it expecting rewriting. Grammarly's free plan covers spelling and grammar, shows your writing tone, and includes 100 AI prompts per month. But the plans page lists tone adjustment, sentence rewrites, plagiarism detection and AI-text identification as unavailable on Free — and sentence rewrites are exactly the paraphrasing feature.
Use Grammarly free for what it is excellent at: catching errors. Do not expect it to reword your paragraphs. Pro is listed at €12/month on the plans page; a US dollar figure was not shown there.
DeepL Write Paid add-on, not free
Often recommended for rewriting, and the detail that gets missed: DeepL Write is not included in the DeepL Free plan — DeepL's plan page lists it as a paid add-on. The free plan covers translation, with 50,000 characters per month and one file translation. So DeepL free is a translation allowance, not a rewriting one.
ChatGPT and Claude free tiers
The honest comparison nobody makes. Both accept a full essay in one message, so there is no 125-word ceiling and no chunking, and both can explain why a sentence is unclear rather than just swapping words. Usage limits apply and vendors do not publish stable public numbers, so treat capacity as "several long messages a day." For understanding and restructuring, this is the most capable free option — see our comparison of free AI writing tools for how the three assistants differ on prose.
Why Chunking an Essay Backfires
The obvious workaround for a 125-word cap is to feed the essay through in pieces. It works mechanically and fails editorially, for a reason worth understanding before you spend an evening on it.
A paraphraser only sees the text in the box. Split a 1,500-word essay into twelve blocks and the tool rewrites each one with no knowledge of the other eleven, which produces three predictable problems: terminology drifts as the same concept gets a different synonym in each block; transitions break, because the sentence that referred back to "this tension" now follows a paragraph that no longer sets up any tension; and the register wobbles, with one section tightened into clipped sentences and the next loosened into longer ones.
Stitching that back together takes longer than rewriting the weak paragraphs yourself. The sensible use of a 125-word cap is surgical: the sentence you have rewritten four times and still dislike, not the whole draft. After any paste-heavy workflow, run the result through Remove Extra Spaces and AI Text Cleaner — copying between web tools reliably leaves double spaces and invisible characters that a marker's eye catches as sloppiness.
What Paraphrasing Tools Do Not Solve
Three limits have nothing to do with pricing, and they matter more than any of the numbers above.
Rewording is not citing. A paraphrase of someone else's idea still needs a citation. Changing the words changes nothing about whose argument it is, and the most common way students get into trouble with these tools is assuming a successful reword removes the need for attribution. It does not.
Paraphrasing does not make AI text undetectable, and treating it as a trick is the wrong goal. Our review of whether AI content detectors actually work covers the evidence, including the uncomfortable finding that detectors produce false positives on perfectly honest writing — notably from non-native English speakers. If your institution has a policy on AI assistance, the safe move is reading it and following it, not shopping for tools that claim to beat it.
A synonym swap is not comprehension. Standard mode replaces words and reorders clauses; it cannot tell you that your paragraph contradicts the one before. For checking whether your writing actually reads clearly, Readability Checker gives you a grade level and sentence-length profile, which is closer to the thing markers respond to. Our guide to AI tools for students includes a section on using them within the rules.
Comparison Table
| Tool | Free Limit | Best For | Paid From |
|---|---|---|---|
| QuillBot | 125 words per go, unlimited goes; 2 of 9 modes | Single awkward sentences | $19.95/mo · $99.95/yr (~$8.33/mo) |
| Scribbr | 125 words per input, unlimited uses, no signup | Quick reword with no account | Free tool |
| Wordtune | 10 rewrites/day, no word cap; 3 summaries/mo | Whole paragraphs | $6.99/mo Advanced |
| Grammarly | 100 AI prompts/mo; sentence rewrites excluded | Grammar, not paraphrasing | €12/mo Pro (no USD listed) |
| DeepL Write | Not in Free — paid add-on | Free plan is translation only (50k chars/mo) | Add-on pricing |
| ChatGPT / Claude | Daily usage limits, no per-go word cap | Whole drafts, and explaining why | Free tiers available |
Which One Should You Use?
- One sentence you cannot get right: QuillBot or Scribbr. Unlimited attempts, and 125 words is more than one sentence needs.
- You want no account at all: Scribbr. Same ceiling, zero signup.
- A full paragraph or section: Wordtune. Ten a day, but each one takes the whole paragraph, so no chunking.
- A complete draft you want to improve: ChatGPT or Claude on their free tiers — no word ceiling, and they can tell you what is weak rather than only swapping words.
- You mainly want errors caught: Grammarly free. Just know that sentence rewrites are not part of it.
- You are paraphrasing a source: cite it anyway, and check your course's AI policy before using any of these on submitted work.