an honest comparison
Walter Writes AI alternative: SI Humanizer side by side
Looking for a Walter Writes AI alternative? Here is what Walter Writes AI offers, what SI Humanizer offers, and which one fits which kind of writer. Facts come from each vendor's public pages; nothing here is a paid placement.
Prices checked on September 26, 2026 · how we compare
The short answer
Choose Walter Writes AI if you need a large monthly volume, a team plan, an API or a Chrome extension today, and you are comfortable paying for a subscription.
Choose SI Humanizer if you want a free humanizer you can use every day without a trial clock, plain answers about detectors, and a clear promise that your text is not kept.
Walter Writes AI vs SI Humanizer at a glance
| Walter Writes AI | SI Humanizer | |
|---|---|---|
| Free usage | Free trial of 300 words, no credit card | 3 runs a day without an account; 3,000 words a day with a free account |
| Paid plans from | $12/month, or $8/month billed yearly ($96) | Pro coming soon ($9/month planned); free tiers available now |
| Volume | 30,000 to 500,000 words a month depending on plan | Daily allowance instead of a monthly one |
| Max words per request | 750 to 2,000 words depending on plan | 1,000 words (free), 3,000 (Pro); 1,000 for the 3-version rewriter |
| Modes and styles | Three rewrite strengths: Simple, Standard, Enhanced | Natural, Casual, Professional, Academic styles with every fix highlighted; click-a-word synonyms in the paraphraser; 3 versions per rewrite |
| Languages | 80+ languages (vendor claim) | Answers in the language you paste; best in major European languages |
| Built-in AI detector | Yes, built-in AI detector | No. We focus on the writing itself |
| Other tools | Chrome extension, mobile app, paraphraser, grammar checker, resume rewriter, API from $49/month, MCP connector | SI Paraphraser, SI Rewriter, SI Summarizer |
| Refunds | First payment only, within 3 days and 1,500 words used; renewals not refundable | Nothing to refund today; failed runs are never counted |
| Your text | Trust center lists SOC 2 Type I and encrypted transmission. The privacy policy does not say whether submitted text is used for training. | Text is not stored in our database and not used for training |
| How it presents itself | Presents itself as an "AI authenticity platform" that makes text "sound like you wrote it" and "scan clean", with "anti-detection technology". | Makes SI (AI) text read naturally. No promise about AI detectors. |
What Walter Writes AI does well
- A wide product: humanizer, detector, paraphraser, grammar checker, a Chrome extension and a mobile app under one account.
- Voice matching, which adapts the output to a writing sample you provide.
- Serious volume on paid plans, including a Teams plan for 10 people and an API for developers.
- A security page with a SOC 2 Type I report, which matters to companies.
Operator: Walter AI Inc., Montréal (Québec), according to its terms of service. Its about page says the humanizer launched in mid 2024.
Walter Writes AI pricing in detail
Prices in US dollars as listed on Walter Writes AI's pricing page on September 26, 2026. Vendors run promotions and regional prices, so treat these as a snapshot.
| Plan | Monthly | Yearly, per month | Words per month | Max words per request |
|---|---|---|---|---|
| Starter | $12 | $8 ($96/yr) | 30,000 | 750 |
| Pro | $23 | $13 ($156/yr) | 70,000 | 1,500 |
| Elite | $47 | $26 ($312/yr) | 200,000 | 2,000 |
| Teams (10 members) | $139 | $99 ($1,188/yr) | 500,000 | 2,000 |
Where SI Humanizer is different
A free tier you can actually use every day
3 runs a day with no account, then 3,000 words every day with a free account, across four tools. It refills daily instead of running out after a trial.
Built for readers, not for detector scores
Walter Writes AI presents itself as an "AI authenticity platform" that makes text "sound like you wrote it" and "scan clean", with "anti-detection technology". We take a different line. Our humanizer is designed to edit like a person: vary the rhythm, cut stock phrases, keep your facts and citations. We make no promise about Turnitin, GPTZero or any other detector, because nobody can honestly guarantee one.
Your text is not kept
We send your text to our language model provider to produce the result and do not store it in our database. We log only the tool, the word count and timing. See our privacy policy.
Four focused tools
Besides the SI Humanizer, you get the SI Paraphraser, the SI Rewriter and the SI Summarizer. Walter Writes AI offers a wider catalogue (chrome extension, mobile app, paraphraser, grammar checker, resume rewriter, API from $49/month, MCP connector), so if you need those extras, it may suit you better.
How we compared
We read Walter Writes AI's homepage, pricing page, terms and privacy policy on September 26, 2026 and recorded only what they state publicly, with prices as displayed on that date. Where the vendor's own pages contradict each other, we say so. We did not run AI detector tests, because scores change from week to week and are not a fair measure of writing quality. We make SI Humanizer, so read this page as an informed but interested view, and check the vendor's page before you buy. Our full rules are in the editorial policy.
Walter Writes alternative FAQ
Is SI Humanizer a free Walter Writes alternative?
Yes. You can humanize 3 texts a day without an account and 3,000 words a day with a free account, up to 1,000 words per run. Walter Writes's free offer, as listed on its site: free trial of 300 words, no credit card.
Does SI Humanizer bypass AI detectors like Walter Writes says it does?
We do not make that claim. Walter Writes presents itself as an "AI authenticity platform" that makes text "sound like you wrote it" and "scan clean", with "anti-detection technology". Detector results change over time and differ between tools, and some flag human writing. We focus on making text read naturally for people, and we suggest you check your school's or client's rules on AI use.
Which one has better prices?
For light, everyday use SI Humanizer costs nothing. For large monthly volumes, Walter Writes's paid plans (from $12/month, or $8/month billed yearly ($96)) offer more capacity than our free tiers today. Our Pro plan is not open yet; you can join the waiting list.
When were these facts checked?
We checked Walter Writes's public pages on September 26, 2026. Prices shown are in US dollars as listed by the vendor and may vary by country, promotion or test. Always confirm on its pricing page before you buy.
See the difference on your own text
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