QuillBot vs WriteHuman

QuillBot

QuillBot remains the fastest way to reword a paragraph you have already written, and the free tier is enough for occasional use; Premium at roughly $8 to $20 a month depending on term buys the extra modes, longer inputs and the plagiarism checker that students actually want. Against a general chatbot it wins on speed and a purpose-built interface, not on writing quality, and against Grammarly it is cheaper but narrower.

Pros

• +Free tier includes grammar checking, two paraphrase modes, translation and AI detection
• +Extensions and apps for Chrome, Windows, macOS, Safari, iOS and Android keep it inside the writing surface
• +Paraphrase modes and a synonym slider give more control than a one-shot rewrite prompt
• +Backed by Learneo, a large education group, rather than an anonymous operator

Cons

• −Month-to-month Premium is about 2.4 times the annual rate, so the headline low price assumes a year up front
• −The site blocks automated access, so none of the figures here come from its own pricing page
• −The App Store listing itself disagrees on how many Premium paraphrase modes exist (8 versus 10+)
• −The heavy student use and the AI detector attract academic-integrity scrutiny that can rebound on users

WriteHuman

As humanizers go this one is unusually transparent about its own scoring, showing per-sentence detection probability instead of a single vague pass mark, and its surface area — extension, mobile apps, API, MCP — is wider than most rivals. The catch is what the tool is for: passing AI-detection checks breaches most academic integrity policies, and no vendor can guarantee any detector's verdict.

Pros

• +Sentence-level detection scores rather than a single opaque verdict
• +Chrome extension, iOS and Android apps, plus a documented API and MCP access
• +Free tier lets you judge output quality before paying
• +Annual billing cuts the effective monthly rate by roughly a third

Cons

• −Request counts and word caps are tight on the lower tiers
• −Detector outcomes are probabilistic and shift as detectors are retrained
• −Use is disallowed by most academic integrity policies

Is QuillBot cheaper than WriteHuman?

On published entry prices, WriteHuman starts lower — $12/mo against $19.99/mo for QuillBot. Entry price is the lowest paid plan as we last verified it; what each plan includes differs.

Does QuillBot or WriteHuman have a free tier?

Both: QuillBot has a free tier, and WriteHuman has a free tier.

Which has a public API, QuillBot or WriteHuman?

WriteHuman ships a public API, as of our last verification. A public API for QuillBot is not confirmed by us — check its developer docs before you plan an integration.