Compare AI humanizers

Pick two to four tools and read them side by side, or open any pair's full head-to-head page. Every number comes from the same November 2026 benchmark run: the same prompts, the same detectors, the same scoring, all of it published.

Pick 2 to 4 tools 3 of 4 selected

Pick exactly two for a full head-to-head page with charts, history and a written verdict.

Metric	WriteHuman #1 · 70.11	StealthGPT #2 · 69.47	Clever AI Humanizer #3 · 68.48
Overall
Leaderboard rank	#1	#2	#3 ▲ 1
Overall score	70.11	69.47	68.48
Score componentsBypass 42%, meaning 32%, readability 16%, consistency 10%; penalties come off the total.
Bypass rate95% CI shown under each value	81.176.7–85.4	66.056.4–74.8	66.762.1–69.5
Meaning preservation	59.2	67.3	65.8
Readability	55.4	77.7	60.9
Consistency across categories	92.4	88.0	96.5
Penalties	−1.0	−1.0	None
Detector bypass ratesShare of runs each detector classified as human-written.
GPTZero	99.9	71.4	95.5
Originality.ai	36.5	28.8	24.0
Copyleaks	96.7	90.0	96.7
Winston AI	97.2	81.1	96.8
ZeroGPT	87.3	63.6	84.6
Pangram	68.9	60.9	2.7
Writing categoriesCategory score: bypass credit only for real rewrites, blended with the category's own meaning and readability.
Academic Essay6 prompts	56.2	69.7	64.1
Application Essay6 prompts	74.3	63.4	68.8
Blog Post6 prompts	66.7	75.4	63.5
Marketing Copy6 prompts	73.0	60.6	64.3
Discussion Board3 prompts	70.9	67.5	66.9
News Article3 prompts	61.1	65.6	65.5
Pricing & accessStandard monthly entry price, without annual discounts or promotions. Usage allowances differ; compare plan details.
Monthly price	$20.00/mo	$29.99/mo	Free
Entry plan includes	Basic: 80 requests/month, up to 600 input words each.	Pro: 50,000 words/month, up to 1,000 input words per use.	Free humanizer; up to 3,000 input words per request.
Free tier	Yes	Not confirmed	Yes
Free allowance	3 requests / 30 days; 250 words each	—	3,000 words / request; no fixed monthly cap
Free try / trial	—	—	—

Every matchup

Each cell is the row tool's overall score minus the column tool's, November 2026 cycle. Green means the row leads, red the column. Click a cell to open that head-to-head; the last column is each tool's win–loss record against the rest of the field.

120 pairs · 16 tools

Row minus column	#1	#2	#3	#4	#5	#6	#7	#8	#9	#10	#11	#12	#13	#14	#15	#16	W–L
#1 WriteHuman 70.11		+0.6	+1.6	+4.9	+5.8	+5.9	+7.9	+8.9	+9.1	+9.5	+10.5	+11.2	+11.7	+12.6	+15.2	+17.6	15–0
#2 StealthGPT 69.47	−0.6		+1.0	+4.3	+5.1	+5.2	+7.3	+8.2	+8.4	+8.9	+9.9	+10.5	+11.1	+12.0	+14.5	+17.0	14–1
#3 Clever AI Humanizer 68.48	−1.6	−1.0		+3.3	+4.1	+4.2	+6.3	+7.2	+7.4	+7.9	+8.9	+9.5	+10.1	+11.0	+13.5	+16.0	13–2
#4 Humanize AI Pro 65.18	−4.9	−4.3	−3.3		+0.8	+0.9	+3.0	+3.9	+4.1	+4.6	+5.6	+6.2	+6.8	+7.7	+10.2	+12.7	12–3
#5 Phrasly 64.35	−5.8	−5.1	−4.1	−0.8		+0.1	+2.1	+3.1	+3.3	+3.7	+4.8	+5.4	+6.0	+6.9	+9.4	+11.8	11–4
#6 Undetectable.ai 64.24	−5.9	−5.2	−4.2	−0.9	−0.1		+2.0	+3.0	+3.2	+3.6	+4.7	+5.3	+5.9	+6.8	+9.3	+11.7	10–5
#7 Stealth Writer 62.20	−7.9	−7.3	−6.3	−3.0	−2.1	−2.0		+1.0	+1.2	+1.6	+2.6	+3.3	+3.8	+4.7	+7.3	+9.7	9–6
#8 Ryne AI 61.24	−8.9	−8.2	−7.2	−3.9	−3.1	−3.0	−1.0		+0.2	+0.6	+1.7	+2.3	+2.9	+3.8	+6.3	+8.7	8–7
#9 SupWriter 61.05	−9.1	−8.4	−7.4	−4.1	−3.3	−3.2	−1.2	−0.2		+0.4	+1.5	+2.1	+2.7	+3.6	+6.1	+8.5	7–8
#10 AI Humanize io 60.62	−9.5	−8.9	−7.9	−4.6	−3.7	−3.6	−1.6	−0.6	−0.4		+1.0	+1.7	+2.2	+3.1	+5.7	+8.1	6–9
#11 Super Humanizer 59.57	−10.5	−9.9	−8.9	−5.6	−4.8	−4.7	−2.6	−1.7	−1.5	−1.0		+0.6	+1.2	+2.1	+4.6	+7.1	5–10
#12 Grammarly 58.95	−11.2	−10.5	−9.5	−6.2	−5.4	−5.3	−3.3	−2.3	−2.1	−1.7	−0.6		+0.6	+1.5	+4.0	+6.5	4–11
#13 Humbot 58.38	−11.7	−11.1	−10.1	−6.8	−6.0	−5.9	−3.8	−2.9	−2.7	−2.2	−1.2	−0.6		+0.9	+3.4	+5.9	3–12
#14 HIX Bypass 57.47	−12.6	−12.0	−11.0	−7.7	−6.9	−6.8	−4.7	−3.8	−3.6	−3.1	−2.1	−1.5	−0.9		+2.5	+5.0	2–13
#15 Walter Writes 54.95	−15.2	−14.5	−13.5	−10.2	−9.4	−9.3	−7.3	−6.3	−6.1	−5.7	−4.6	−4.0	−3.4	−2.5		+2.5	1–14
#16 Rephrasy 52.50	−17.6	−17.0	−16.0	−12.7	−11.8	−11.7	−9.7	−8.7	−8.5	−8.1	−7.1	−6.5	−5.9	−5.0	−2.5		0–15

Closest calls

Smallest overall gaps this cycle. Read the confidence intervals before picking a side.

The podium

The top three against each other.

Widest gaps

The most lopsided pairs in the field.

Rankings are recomputed every cycle from published inputs, outputs and detector verdicts. How scoring works →