Grading Freemium Featured

QuillBot

AI-powered writing assistant providing paraphrasing, grammar checking, plagiarism detection, AI-generated content detection, and tone analysis. ESL/EFL teachers recommend for vocabulary expansion and sentence-level improvement. AI detector supports academic integrity by identifying AI-generated text.

About QuillBot

QuillBot is an AI-powered paraphrasing and writing enhancement platform that helps language learners rephrase sentences, improve fluency, and develop more sophisticated expression. For ESL teachers, QuillBot's core strength lies in its paraphrasing tool, which offers multiple rewrite modes (Standard, Fluency, Creative, Formal) that help students see alternative ways to express ideas while maintaining original meaning. This exposure to varied sentence structures and vocabulary choices accelerates language acquisition by showing learners natural English phrasing they might not discover independently. What makes QuillBot particularly valuable in ESL contexts is its ability to help students break free from repetitive language patterns. Intermediate learners often get stuck using the same basic sentence structures and vocabulary, and QuillBot's paraphrasing suggestions introduce them to more sophisticated alternatives. The grammar checker catches errors similar to Grammarly, but QuillBot's unique value is teaching students that good writing isn't just about correctness but also about variety and style. The platform also includes a translator for 45+ languages, making it accessible for multilingual classrooms. ESL teachers use QuillBot to teach paraphrasing as an academic skill, helping students understand how to rework source material without plagiarizing. In research writing courses, students practice taking complex academic texts and paraphrasing them in their own words, with QuillBot serving as both a model and a check on their work. However, teachers must establish clear guidelines on ethical use, as some students may rely too heavily on the tool rather than developing independent paraphrasing skills. The free version limits users to 125 words per paraphrase, while Premium (.33/month annually) removes this restriction.

Key Features

Seven paraphrasing modes (Standard
Fluency
Creative
Concise
Formal
Simple
Expand)
Grammar Checker identifying punctuation
syntax
and usage errors
AI Detector identifying AI-generated content with confidence scoring
Plagiarism Checker scanning billions of online sources
Tone Detection and adjustment tools supporting pragmatic competence

Use Cases for ESL Teachers

• Academic Paraphrasing Practice: Students learn to rework source material in their own words, using QuillBot's suggestions as models for effective paraphrasing techniques before attempting independent rewrites • Sentence Structure Variety Exercises: Teachers highlight student writing that overuses simple structures, then have students use QuillBot to explore alternative phrasings and analyze why certain structures work better • Vocabulary Expansion Through Synonyms: Intermediate learners compare their original sentences with QuillBot's paraphrased versions, identifying new vocabulary and expressions to add to personal word banks • Research Paper Source Integration: Graduate ESL students use QuillBot to practice integrating sources appropriately, learning to balance direct quotes with effective paraphrase while maintaining academic integrity • Writing Fluency Development: Advanced learners use the Fluency mode to see how their grammatically correct but awkward sentences can be restructured for more natural English flow

Pros

• Excellent tool for teaching paraphrasing skills: Provides concrete models of how to rework sentences effectively, making abstract paraphrasing concepts tangible for language learners • Multiple paraphrasing modes for different contexts: Standard, Fluency, Formal, and Creative modes help students match tone and style to different writing situations (academic vs. casual) • Integrated grammar checking and translation: Combines error correction with rephrasing, making it a multi-purpose writing assistant rather than a single-function tool • Affordable compared to competitors: Premium at .33/month annually is more accessible for students than Grammarly Premium at 2/month

Cons

• Can enable student laziness if not properly guided: Students may paste text into QuillBot without understanding the changes, using it as a shortcut rather than a learning tool • Free tier 125-word limit is restrictive: Paraphrasing longer passages requires Premium, creating equity issues in classrooms where not all students can afford subscriptions • Ethical concerns around academic integrity: Teachers must explicitly teach when QuillBot use is appropriate versus when it constitutes cheating, as tool blurs lines between student work and AI assistance

Best For

Student Levels: A2 (Elementary) to C1 (Advanced) learners. Most effective for B1-B2 students developing academic writing skills and learning to vary their expression. Less suitable for C2 learners who need minimal paraphrasing support. Teaching Contexts: Academic ESL programs, college preparation courses, research writing classes, and any context where students need to integrate sources into their writing. Particularly valuable in higher education settings teaching citation and paraphrasing conventions. Pain Points Solved: Helps students move beyond repetitive language patterns, teaches academic paraphrasing as a concrete skill, provides models of sophisticated English expression, and supports vocabulary expansion through contextual synonym exposure.

Tips for ESL Teachers

• Establish clear usage policies from day one: Define when QuillBot use is acceptable (checking grammar, exploring alternatives) versus prohibited (submitting AI-paraphrased text as original work). Include examples in your syllabus so students understand boundaries. • Teach critical evaluation of QuillBot suggestions: Don't let students blindly accept paraphrases. Have them analyze why QuillBot chose certain words or structures, compare options, and select the best fit for their intended meaning and audience. • Use QuillBot as a teaching tool, not just a checking tool: Project QuillBot in class and collectively paraphrase challenging sentences, discussing why certain rephrasing choices are stronger than others. This builds metacognitive awareness of effective paraphrasing strategies.

Pricing

Model: Freemium
Details: Free basic. Premium: Pricing varies. 35M+ users worldwide

Teaching Context

Online 1-on-1 Classroom Hybrid

Student Age

Teens Adults

CEFR Levels

B1 B2 C1 C2