Humanize AI text without changing the facts
A humanizer rewrites sentences, and sentences carry facts. A rewrite that reads better but moves a deadline or drops a name is worse than the draft. reright checks the facts before it returns a rewrite, and if a check fails you get your own text back.
What reright checks
Before a rewrite returns, reright compares it with the original. Numbers, names, links and code have to match, each paragraph has to stay in its language, and the length has to be close. Dates and times keep the word that connects them, so "by Friday" never becomes "before Friday" and currency signs stay. A rewrite that introduces a grammar error or adds or drops a "not" is rejected. Quotations of three words or more, greetings, sign-offs, links and code never go to the model, so they return unaltered. When the model changes a number, date or name and nothing around it, reright puts the original back. In English it does the same for a single word swapped for one that shifts the meaning. A rewrite that still fails a check is dropped, and the original returns with the reason. An agent that calls reright also compares the rewrite with what it wrote and keeps its own text if the meaning changes.
The public test
We ran reright on the AI-written texts of the AI Humanizer Benchmark, a public test of other humanizers, and scored every tool's output with the same open checks. The code, the data and every output are published on the benchmark page.
| reright | Other humanizers | |
|---|---|---|
| Changed a number, name or quote | 1% of texts | 30% to 46% (9 tools) |
| Meaning kept, judge score out of 5 | 4.41 | Lower for 8 of 9 tools (2.46 to 4.20) |
| Checks facts before it returns text | Yes: numbers, names and meaning, and quotes stay as written | 1 of 12 tools says it checks numbers and meaning |
Texts and competitor outputs come from the AI Humanizer Benchmark, September to November 2026, run with default settings. The benchmark is run by the team behind UndetectedGPT and did not review this test. reright's outputs come from production on the evening of 6 November 2026. Facts are checked with the checker from the paper "Humanized but Still True?", and meaning is scored by the open model gpt-oss-20b. Plans and features are taken from each tool's public pages on 6 November 2026.
Where reright falls short
It can still drop a word that carries a fact when nothing marks it as one, such as "first" in "first-time triathletes". It hands 4% of texts back unchanged, when it cannot rewrite them without changing a number or a name. Every text in the test is in English, and the rewrites are reright's defaults, before it learned anyone's writing.
Languages
reright rewrites English, Portuguese from Portugal and Brazil, Spanish, French, German, Italian and Dutch. If a rewrite comes back in another language, the check fails and you get your text back. Text in other languages is left as it is.
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