Head to head

QuillBot vs Grammarly

The verdict

Grammarly is the better all-around writing assistant for most people, but QuillBot wins on price and is the only real choice if you need serious paraphrasing — just don't expect it to replace a full grammar checker.

PriceQuillBot

Ease of useGrammarly

Output qualityGrammarly

Feature by feature

FeatureQuillBotGrammarly

PricingQuillBot Premium: $9.95/mo (or $4.17/mo annual at $49.95/yr)Grammarly Premium: $30/mo (or $12/mo annual at $144/yr)

Free TierFree tier includes paraphraser (limited modes), 125-word summarizer, limited grammar checker — usable but cappedFree tier covers basic grammar and spelling only — noticeably stripped down, pushes upgrades aggressively

Context Window / LimitsFree paraphraser capped at 125 words per input; Premium removes cap entirelyNo word-count processing limit on documents; handles full essays and long docs without restriction

Best Use CaseStudents and writers needing to rephrase, paraphrase, or reword content fast without paying muchProfessionals needing comprehensive grammar, tone, clarity, and plagiarism checking in one polished tool

Biggest WeaknessGrammar checking is mediocre compared to Grammarly — it misses subtle errors and style issues regularlyCosts 3x more than QuillBot Premium annually; paraphrasing feature is basic and not its strength

SpeedParaphrasing output is near-instant; grammar suggestions load quickly — no meaningful lag reportedBrowser extension occasionally slows on large documents; real-time suggestions can lag in Google Docs

Real cost breakdown

Moderate use scenario: writing 20 documents/month, light paraphrasing, grammar checking throughout. QuillBot Premium annual plan = $4.17/mo ($49.95/yr total). Grammarly Premium annual plan = $12/mo ($144/yr total). Difference: $94/yr or $7.83/mo. QuillBot has no per-token pricing — it's a flat subscription. Grammarly also flat-rate but nearly 3x the annual cost. If you need both paraphrasing AND deep grammar checking, you might subscribe to both — that's $16.17/mo combined, still cheaper than Grammarly's monthly rate of $30. Bottom line: QuillBot costs 65% less per year for premium access.

When to switch

Drop QuillBot for Grammarly when: you are writing professionally and grammar mistakes are costing you credibility — Grammarly catches nuanced style issues, passive voice abuse, and tone mismatches that QuillBot simply misses. Switch if your employer or clients judge document polish heavily. Drop Grammarly for QuillBot when: you are a student on a tight budget who needs to rephrase source material legally, summarize research, or reword your own drafts quickly — QuillBot does this better and charges a third of the price. If Grammarly's upsell popups are making you insane and you only need basic grammar help, QuillBot's free tier is honestly sufficient for casual use.

This comparison is independent. Neither company paid us or reviewed this content before publication. Pricing verified as of publication date — check official sites for current rates.