QuillBot
Comprehensive AI writing and paraphrasing platform integrating sentence rewriting, grammar checking, AI content detection, and tone enhancement
Product node overview & trust baseline
Operator provenance, privacy baseline and site-wide pricing belong directly to the product node and are inherited across linked task edgesQuillBot (founded in 2017 by UIUC alumni, now a Learneo, Inc. business in Redwood City, California) is one of the world's most widely adopted AI writing and paraphrasing platforms. Anchored by its signature Paraphraser engine, it has expanded into a full-featured writing suite featuring Grammar Checker, AI Content Detector, AI Humanizer, Plagiarism Checker, and Summarizer. The site operates a freemium model: the Free tier allows anonymous text rewriting up to 100 words across 2 core modes; QuillBot Premium displays an annual equivalent rate of $8.33/month (58% discount), unlocking unlimited word counts, 9 advanced phrasing modes, faster processing, and 25,000 words/month of plagiarism detection.
United States · Founded in 2017; acquired by Learneo in 2021
Provenance baseline: 18/20 · Operated by Learneo, Inc., serving over 35 million writers worldwide with complete terms and compliance disclosures.
Annual tier displays $8.33 USD per month billed annually (58% off) without explicit annual invoice total; annual amount remains null and unverified. Free tier is permanently free with 100-word limit.
Pricing transparency baseline: 33/35 · Cancellation:
Subject to Learneo privacy terms; texts processed for requested outputs and optional user history without selling personal data
Google Analytics · Datadog · Cloudflare
Product-level pricing & rules baseline
Verified plans, billing periods and cancellation terms owned by this product node; task-specific credit costs and free export limits are detailed per capability edge belowQuillBot Free and Premium annual pricing structure · 2026-10-31
Text rewriting, basic grammar proofreading, summarizer, citation generator
Unlimited words, advanced suggestions, tone analysis, faster processing；Displays only equivalent $8.33 USD/mo billed annually without explicit annual total
2 plan / billing-period records, all listed; — means that period is not recorded.
Annual tier displays $8.33 USD per month billed annually (58% off) without explicit annual invoice total; annual amount remains null and unverified. Free tier is permanently free with 100-word limit.
Verification has gaps; unknown prices and quotas are not inferred.
Cancellation, sources & verification record
Cancellation and refund terms unverified
QuillBot Premium Official Pricing Page ↗ · 2026-10-31 Capture 1 ↗
Archived official pricing sources: QuillBot Premium Official Pricing Page (2026-10-31) [text snapshot ↗]
Capability map & linked task edges
Whenever a capability passes fixed-fixture testing, an edge is automatically linked between this product node and the task topic for horizontal comparison.
This product node has a verified operator, privacy, and pricing baseline, but currently has no scored task edges with a free native export. See the discovered capabilities or paywall-blocked test records below.
Discovered product capabilities (pending fixture test / edge incubation)
Recorded capability · Not yet scoredThese capabilities have been identified on the product but have not yet undergone fixed-fixture testing. When an emerging capability co-occurs across multiple products, it incubates a new task edge.
Tested task edges (with scores and native artifacts) are strictly separated from discovered untested capabilities (unscored).
Developer & citation kit · Claim updates, request benchmarks & embed verified badges
Product developers and writers can embed these SVG badges in official websites, GitHub READMEs or documentation, or use the channels below to sync product-wide plans and capabilities.
[](https://realtest.org/tools/quillbot.com/) <a href="https://realtest.org/tools/quillbot.com/"><img src="https://realtest.org/badges/quillbot.com.svg" alt="QuillBot — RealTest" height="24" /></a>