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Comparison · Which Is More Natural

EssayFilter vs QuillBot AI Humanizer — Which Sounds More Natural

A focused look at output naturalness and readability, comparing EssayFilter and QuillBot AI Humanizer on output naturalness / readability and related dimensions.

By Humanizer Desk Editorial6 min read

EssayFilter and QuillBot AI Humanizer are both AI text humanizers, but this comparison zooms in on output naturalness and readability. On our weighted editorial model, EssayFilter scores 8.20/10 overall and QuillBot AI Humanizer scores 7.24/10 — with EssayFilter ahead once every dimension is weighted together. Zoomed in on output naturalness / readability alone, EssayFilter rates noticeably higher (8.3 vs 7.7 out of 10). Scores reflect public site evidence gathered as of 2026-07-26, not a lab-tested detector benchmark.

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Output naturalness / readability: EssayFilter vs QuillBot AI Humanizer

Here's what each vendor's own site says relevant to output naturalness and readability:

DimensionEssayFilterQuillBot AI Humanizer
Output naturalness / readability8.37.7
Overall weighted score8.207.24

EssayFilter

EssayFilter markets itself as a free-friendly AI humanizer for students and essay writers, with homepage claims about Turnitin, GPTZero, and Originality.ai. Treat detector percentages as marketing until independently verified.

QuillBot AI Humanizer

QuillBot’s AI Humanizer is part of a larger writing platform (paraphrase, grammar, etc.). Strong option when users already live in QuillBot.

EssayFilter vs QuillBot AI Humanizer — Which Is More Natural FAQ

For which is more natural specifically, EssayFilter has the edge on output naturalness / readability, though QuillBot AI Humanizer may still suit you better depending on price and workflow fit.

The clearest gap is on output naturalness / readability: EssayFilter leads by roughly 0.6 points on our 0–10 scale. Everything else — free plan, pricing, and support — is covered on each brand's full review.

EssayFilter scores higher on pricing value in our model (compare exact plan prices on each official site, since promotions change). Weigh that against output naturalness / readability, where EssayFilter currently rates higher.

Check each vendor's own site directly: https://www.essayfilter.com/ for EssayFilter, and https://quillbot.com/ai-humanizer for QuillBot AI Humanizer. Pricing, free limits, and features can change after our last research pass.

Want the full picture instead of just which is more natural? See the complete EssayFilter vs QuillBot AI Humanizer comparison, or the standalone reviews for EssayFilter and QuillBot AI Humanizer.

Compare this pair from other angles