Alternatives · Writing
WordAi alternatives
As of Nov 13, 2026, the highest-graded WordAi alternative is QuillBot (2.8 GPA). It's also the best free one.
WordAi compared with 5 alternatives: Paraphraser.io, QuillBot, Kafkai, Undetectable AI and Sassbook AI Writer.
WordAi is a paid product with a free trial, starting at $9 per month, billed annually ($17 billed monthly). 3 of the 5 alternatives are free or have a free plan. 2 more offer a free trial.
Listings checked up to Nov 13, 2026 · Where the facts come from
Black Friday: is there a WordAi sale?
At a glance
| Tool | Price | Free plan | Runs on |
|---|---|---|---|
| WordAiThis tool | Free trial · from $9/mo | Trial only | Web |
| Paraphraser.io | Free plan · from $9 | Yes | Web |
| QuillBot | Free plan · from $8.33/mo | Yes | Web, macOS, Windows, iOS, Android, Browser extension |
| Kafkai | Free trial | Trial only | Web |
| Undetectable AI | Free trial · from $5/mo | Trial only | Web, Browser extension |
| Sassbook AI Writer | Free plan · from $32.50/mo | Yes | Web |
Price against what you get
WordAi starts at $9 a month and scores 2.3 out of 4 on features, ease of use and platforms. 1 of the 4 alternatives on this chart scores higher and starts lower: QuillBot.
Undetectable AI starts lower without scoring higher.
Features, ease of use and platforms, averaged
What paid plans start at, a month (each step along is roughly double) →
- The best score at each price
- Has a free plan
- No free plan
How each one differs from WordAi
Paraphraser.io
Online paraphrasing tool with summarizer and AI detector
- Paraphraser.io starts at $9 per week.
- Paraphraser.io has a free plan, which WordAi lacks.
- Paraphraser.io also covers grammar & style.
- Paraphraser.io does not cover long-form writing, which WordAi does.
Suits: Students and writers who rephrase short passages without paying
QuillBot
AI paraphraser with grammar, summarizing and AI-detection tools
- QuillBot starts at $8.33 per month, billed annually (Premium).
- QuillBot has a free plan, which WordAi lacks.
- QuillBot also lists macOS, Windows, iOS and Android apps and a browser extension.
- QuillBot also covers chat assistant, citations and grammar & style.
- QuillBot does not cover long-form writing, which WordAi does.
Suits: Students and writers who need to reword or shorten existing text
Kafkai
Search data for your AI: keywords, backlinks and competitors
- Kafkai starts at ¥1,000 one-time top-up for 1,000 credits (¥1,100 with consumption tax).
- Kafkai also covers keyword research, rank tracking and backlink analysis.
- Kafkai does not cover long-form writing, which WordAi does.
Suits: People who already work in Claude, ChatGPT or Cursor and want SEO data inside it
Undetectable AI
AI humanizer and AI detector sold by monthly word allowance
- Undetectable AI starts at $5 per month for 10K words, billed annually ($9.99 billed monthly).
- Undetectable AI also lists a browser extension.
- Undetectable AI also covers documents.
- Undetectable AI does not cover long-form writing, which WordAi does.
Suits: People who want to run text through both a rewriter and a detector
Sassbook AI Writer
AI writer, story writer, summarizer and paraphraser suite
- Sassbook AI Writer starts at $32.50 per user / month, billed yearly ($39 billed monthly).
- Sassbook AI Writer has a free plan, which WordAi lacks.
Suits: Individuals who want a writer, summarizer and paraphraser under one subscription
Limits worth knowing in WordAi
- The AI-detection pass has its own smaller monthly cap: 25,000 words on Starter and 250,000 on Power.
- The page says nothing about a free plan; the trial lasts 3 days.
- The 30-day money-back guarantee applies only if fewer than 10 articles were rewritten.
- No apps or extensions are listed; it is used in the browser.
Common questions
What are the alternatives to WordAi?
The alternatives to WordAi in this directory are Paraphraser.io, QuillBot, Kafkai, Undetectable AI and Sassbook AI Writer. Each one has a side-by-side comparison with WordAi.
Is there a free alternative to WordAi?
Yes. Paraphraser.io, QuillBot and Sassbook AI Writer have a free plan alongside paid ones.
Which WordAi alternatives work on Windows?
The WordAi listing does not include a Windows app. QuillBot lists one.
Which WordAi alternatives work on macOS?
The WordAi listing does not include a macOS app. QuillBot lists one.
When were these prices checked?
Each listing shows its own date. On this page they run from Oct 5, 2026 to Nov 13, 2026. Vendors change prices without notice, so confirm on their site before you buy.