Best free AI humanizer
Only tools with a free tier, ranked by overall score.
- 74.89
- 71.18
- 69.02
- 67.58
- 65.98
All 7 ranked See the ranking
Best AI Humanizer by Use Case
Each page below re-ranks the October 2026 results for 14 AI humanizers by one need: a free tier, Turnitin, or a type of writing.
14 humanizers · 30 prompts per tool · 6 detectors · Last tested · Methodology v1.3.0 · Updated monthly
Leaders by use case, October 2026
Best AI humanizer for Turnitin
Ranked by how each tool did against Originality.ai, used here as a Turnitin proxy.
- 100.0
- 99.9
- 97.1
- 96.6
- 96.3
All 14 ranked See the ranking
Best AI humanizer for students
Ranked by how each tool did on academic essays.
- 73.61
- 71.45
- 70.68
All 14 ranked See the ranking
Best AI humanizer for essays and academic writing
Ranked by how each tool did on academic essays and application essays.
- 73.49
- 72.70
- 72.16
Best AI humanizer for SEO and marketing
Ranked by how each tool did on blog posts and marketing copy.
- 72.11
- 70.07
- 67.35
All 14 ranked Best AI humanizer for SEO Best AI humanizer for marketing
Looking for one detector? See how every tool does against GPTZero, Originality.ai, Copyleaks, Winston AI, ZeroGPT and Pangram. For the balanced view across every writing type, see the overall leaderboard, where WriteHuman leads this month.
Leaders by month
Who ranked first on each page in each month. September 2026, August 2026 and July 2026 used methodology 1.2.0; later months used 1.3.0. The Free row uses today's free-tier list for every month.
| Ranking | October 2026 | September 2026 | August 2026 | July 2026 |
|---|---|---|---|---|
| Free | WriteHuman | WriteHuman | WriteHuman | WriteHuman |
| Turnitin proxy | WriteHuman | Stealth Writer | Phrasly | StealthGPT |
| Students | StealthGPT | Undetectable.ai | WriteHuman | WriteHuman |
| Essays and academic writing | StealthGPT | Undetectable.ai | WriteHuman | WriteHuman |
| SEO and marketing | WriteHuman | WriteHuman | Humanize AI Pro | Humanize AI Pro |
| Overall | WriteHuman | WriteHuman | WriteHuman | WriteHuman |
Swipe the table sideways to see every column.
How these rankings work
Each page sorts the same monthly results by one number: the overall score among tools with a free tier, Originality.ai results used as a Turnitin proxy, or a writing-type score that gives detector-bypass credit only for real rewrites and blends in meaning and readability. Each page names its number above its table, and the methodology explains how writing-type scores are built.
Questions about choosing an AI humanizer
Do the leaders change from month to month?
Yes. Between September 2026 and October 2026, the leader changed on 3 of the 6 rankings: Turnitin proxy (Stealth Writer to WriteHuman), students (Undetectable.ai to StealthGPT) and essays and academic writing (Undetectable.ai to StealthGPT). The table above lists each ranking's leader by month.
How were these tools tested?
Each of the 14 ranked tools was given the same 30 AI-written prompts, and the outputs were sent to GPTZero, Originality.ai, Copyleaks, Winston AI, ZeroGPT and Pangram. Every prompt, output and detector score is published on the evidence pages.
What is the best AI humanizer overall?
As of October 2026, WriteHuman has the highest overall score on HumanizerBench (74.89), ahead of StealthGPT and Undetectable.ai. The overall leaderboard balances every detector with meaning, readability and consistency.
More from the benchmark: leaderboard, detectors, every prompt and output and the methodology.