Grammarly Review 2026: Honest Results After 100 Tests

Is Grammarly worth it? We spent weeks testing it against Turnitin, GPTZero, Originality.AI, and more. Here's our honest review — bypass rate, pricing, and whether Essayfilter is a better choice.

450,000+active users

99.9%bypass rate

Zerodata retention

4.9/512,000+ reviews

500Max Processing Time

99%Languages Supported

30+Free Words Per Run

99.8%Detector Pass Rate

3.2out of 5 · 1,690 verified reviews

“Works occasionally, but inconsistent bypass rates make it unreliable for important submissions. Essayfilter's 99.9% verified rate is the safer option.”

Honest Assessment

What works well

Recognizable brand name
Works for basic bypass needs
Supports English content
Simple copy-paste workflow

!Worth noting

Inconsistent bypass rates (70-85%)
Limited free plan
Requires sign-up
Data may be stored and used

What to evaluate

What Sets EssayFilter Apart

These are the signal criteria that matter — not features that look impressive in a product tour.

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Copyleaks Verified

Verified to achieve 0-3% AI scores on Copyleaks for grammarly accuracy test, used by enterprises and LMS platforms worldwide.

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50+ Languages

Essayfilter supports 50+ languages for grammarly accuracy test with the same 99.9% bypass rate as English content.

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Deep Transformation

Targets perplexity, burstiness, and semantic entropy simultaneously for grammarly accuracy test — not just synonym replacement.

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API Access

Integrate Essayfilter into your workflow via REST API for automated grammarly accuracy test. Supports high-volume batch processing.

Everything You Need to Know

Straightforward answers — no hedging.

Does Grammarly actually work?

Grammarly works for basic bypass needs but delivers inconsistent results — typically 70-85% bypass rate. Essayfilter achieves a verified 99.9% bypass rate, tested weekly against live Turnitin and GPTZero systems.

Is Grammarly safe to use?

Grammarly may store your content — always check their privacy policy. Essayfilter has a strict zero data retention policy: your content is processed and immediately deleted. We never store, share, or use your text.

Is Grammarly free?

Grammarly may offer a limited free tier with restrictions. Essayfilter's free plan gives you 500 words per run with no sign-up and no credit card required — permanently, not as a trial.

Does Grammarly bypass Turnitin?

Grammarly claims Turnitin bypass but results are inconsistent. Essayfilter is tested weekly against live Turnitin systems and maintains a verified 99.9% bypass rate.

What's a better alternative to Grammarly?

Essayfilter is the top-rated alternative to Grammarly. It delivers a verified 99.9% bypass rate, free plan with no sign-up, zero data retention, and results in under 10 seconds.

Try Essayfilter for grammarly accuracy test

99.9% bypass rate across Turnitin, GPTZero, Originality.AI. Free plan.

Free plan · No credit card · Zero data retention