Paraphrasing tools have come a long way in recent years. Thanks to advancements in artificial intelligence, today’s tools can rewrite content while keeping the meaning intact and improving readability. Whether you’re a student, content writer, marketer, or just someone who wants to avoid plagiarism, AI paraphrasing tools can save time and effort.
In 2025, these tools are smarter, faster, and more accurate than ever before. This guide will help you discover the 13 best AI paraphrasing tools to use in 2025.
What Are AI Paraphrasing Tools?
AI paraphrasing tools use natural language processing (NLP) and machine learning to reword text automatically. Instead of simply replacing words with synonyms, modern tools understand sentence structure, tone, and context.
These tools are designed to make your writing clearer, more engaging, and original without losing the core message. They are especially helpful for academic writing, blog creation, email communication, and SEO content.
Key Features To Look For in a Good AI Paraphrasing Tool
When choosing a paraphrasing tool, keep these features in mind:
- Accuracy & Readability: Does the output make sense and sound natural?
- Tone & Style Control: Can you choose between formal, casual, academic, or creative?
- Speed: How fast does it rephrase the content?
- Integrations: Is it compatible with tools like Google Docs or Grammarly?
- Plagiarism Checker: Does it ensure your content is unique?
- Multilingual Support: Can it paraphrase in multiple languages?
- Pricing: Is there a free version, and is the premium worth it?
13 Best AI Paraphrasing Tools in 2025
1. QuillBot
QuillBot is one of the most widely used AI paraphrasing tools globally. It uses advanced natural language processing to rewrite content intelligently while keeping the original meaning intact. The tool offers multiple modes such as Standard, Fluency, Formal, Creative, Shorten, and Expand—giving users control over the tone and length of the output.
Key Features:
- 7 writing modes
- Grammar checker
- Summarizer tool
- Chrome & Word extensions
Pros:
- Great accuracy
- Easy to use interface
- Suitable for students, bloggers, and professionals
Cons:
- Limited word count in the free version
- Creative modes are locked behind the premium plan
Pricing: Free version available; Premium starts at $9.95/month
2. Grammarly (Paraphrasing Mode)
Grammarly’s AI-powered paraphrasing feature is part of its premium suite. Known for grammar and spell checking, Grammarly now helps users rewrite sentences to improve clarity and tone. It’s perfect for professionals and academic writers who want polished and engaging content.
Key Features:
- Real-time rewrite suggestions
- Tone detector and clarity checker
- Cross-platform support (browser, MS Word, mobile)
Pros:
- High-quality rewriting
- Integrated with proofreading and grammar tools
Cons:
- Paraphrasing available only in the premium version
Pricing: Premium starts at $12/month
3. Wordtune
Wordtune is an intelligent writing assistant that offers sentence-by-sentence rewriting suggestions. With just a click, users can change tone (formal/casual) and length (shorten/expand), making it a favorite among content writers and professionals.
Key Features:
- Real-time paraphrasing
- Tone adjustments
- Chrome extension
Pros:
- Intuitive interface
- Supports multiple tones and rewrite options
Cons:
- Limited free usage per day
- Only works in English
Pricing: Free version; Premium starts at $9.99/month
4. Paraphraser.io
Paraphraser.io is a simple yet powerful online paraphrasing tool that caters to students and writers. It supports multiple languages and includes a built-in plagiarism checker and grammar tool.
Key Features:
- Basic, Fluency, and Creative modes
- Multilingual support
- Built-in grammar and plagiarism checkers
Pros:
- Simple and easy to use
- Free version with decent output
Cons:
- Limited rewrite accuracy for complex sentences
Pricing: Free version; Premium starts at $7/month
5. Jasper AI (Content Improver Tool)
Jasper AI is a content-generation platform popular among marketers and copywriters. Its “Content Improver” tool allows users to rewrite sentences or paragraphs to make them more engaging, creative, or persuasive.
Key Features:
- SEO mode for content optimization
- Over 50+ content templates
- Advanced tone and voice controls
Pros:
- Best suited for marketing and branded content
- High-quality output
Cons:
- Not budget-friendly for casual users
Pricing: Plans start at $49/month
6. Writesonic (Paraphraser Tool)
Writesonic is another versatile AI writing tool that includes a powerful paraphrasing feature. It’s great for rewriting blog posts, ad copy, and other marketing material in a variety of tones.
Key Features:
- AI rewriter and paraphraser
- 25+ languages supported
- Chrome extension
Pros:
- Excellent for long-form content
- Flexible tone selection
Cons:
- Free credits are limited
- Might require manual editing for perfect tone
Pricing: Free trial available; Paid plans start at $19/month
7. Spinbot
Spinbot is a fast and free online paraphrasing tool. It’s perfect for casual users who want to quickly spin a paragraph or article without signing up.
Key Features:
- One-click paraphrasing
- No sign-up required
Pros:
- Completely free
- No usage limits
Cons:
- Lacks grammar correction
- Output may sound robotic or unnatural
Pricing: Free
8. CleverSpinner
CleverSpinner is designed for bulk content rewriting with a strong emphasis on readability and uniqueness. It uses NLP to understand and rephrase entire sentences accurately.
Key Features:
- One-click bulk rewriting
- Synonym control
- Content uniqueness checker
Pros:
- Great for SEO professionals
- Fast and unique output
Cons:
- Basic interface
- Learning curve for new users
Pricing: $9.90/month
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9. Paraphrase Tool by PrePostSEO
This is a student-friendly and free paraphrasing tool offered by PrePostSEO. It’s known for its basic functionality and ease of access.
Key Features:
- Basic and advanced paraphrasing modes
- Grammar and plagiarism checker
- Multilingual support
Pros:
- Free and accessible
- Simple UI, great for quick edits
Cons:
- May require manual proofreading
- Not suitable for professional use
Pricing: Free (Premium available)
10. Rytr
Rytr is an AI writing assistant that helps users create content from scratch and includes a sentence and paragraph rewriter. It’s best suited for content marketers and small businesses.
Key Features:
- 30+ languages and 20+ tones
- Chrome extension
- Built-in plagiarism checker
Pros:
- Very affordable
- Easy to use and beginner-friendly
Cons:
- Short output length limits creativity
- May need refinement
Pricing: Free plan; Premium from $9/month
11. Chimp Rewriter
Chimp Rewriter is designed specifically for SEO professionals. It allows users to rewrite content in bulk and supports integrations with third-party tools.
Key Features:
- Spin and rewrite articles with AI
- API access for automation
- Multilingual support
Pros:
- Ideal for agency use
- Supports batch processing
Cons:
- Outdated user interface
- Complex for new users
Pricing: $15/month (with trial available)
12. AISEO Paraphrasing Tool
AISEO is built for SEO-focused writers and content creators. It offers unique paraphrasing capabilities tailored to boost search engine rankings.
Key Features:
- SERP-aware rewriter
- Tone and intent control
- Built-in plagiarism checker
Pros:
- Excellent for SEO content
- Customizable tone and structure
Cons:
- Premium-only access for advanced features
Pricing: Starts at $15/month
13. Rephrase.info
Rephrase.info is an online paraphrasing tool that supports a wide range of rewriting modes and languages. It’s suitable for both academic and creative writers.
Key Features:
- Formal, creative, and fluency modes
- Built-in plagiarism detector
- Grammar corrector
Pros:
- Great for multilingual users
- Offers free and paid options
Cons:
- Can lag with longer texts
Pricing: Free version available; Paid plans optional
Comparison Table: Best AI Paraphrasing Tools at a Glance
| Tool | Free Plan | Plagiarism Check | Style Control | Best For | Starting Price |
| QuillBot | Yes | Yes | Yes | Students, Bloggers | $9.95/month |
| Grammarly | Yes | Yes | Yes | Professionals | $12/month |
| Wordtune | Yes | No | Yes | Writers | $9.99/month |
| Paraphraser.io | Yes | Yes | Limited | Students | $7/month |
| Jasper AI | No | Yes | Yes | Marketers | $49/month |
| Writesonic | Yes | Yes | Yes | Bloggers | $19/month |
| Spinbot | Yes | No | No | Casual Users | Free |
| CleverSpinner | No | Yes | No | SEO Writers | $9.90/month |
| PrePostSEO | Yes | Yes | Limited | Students | Free |
| Rytr | Yes | Yes | Yes | Content Creators | $9/month |
| Chimp Rewriter | No | Yes | No | SEO Professionals | $15/month |
| AISEO | No | Yes | Yes | SEO Writers | $15/month |
| Rephrase.info | Yes | Yes | Yes | Academics, Writers | Free/Paid |
How To Choose the Right Paraphrasing Tool for Your Needs
Before picking a tool, ask yourself:
- Are you writing for academic, SEO, or casual purposes?
- Do you need a plagiarism checker included?
- Is tone/style flexibility important for your content?
- Do you have a budget, or are you looking for free options?
- Do you want a tool that integrates with Google Docs or Chrome?
Answering these questions can help narrow down the best tool for your unique needs.
Common Use Cases for AI Paraphrasing Tools
- Academic Writing: Rewording essays to avoid plagiarism
- Blogging: Refreshing old content with a new voice
- Social Media: Repurposing content across platforms
- Emails: Making emails sound more polished and professional
- SEO Optimization: Improving clarity and keyword placement
Limitations and Ethical Considerations
While these tools are helpful, they have limitations:
- Over-reliance on AI can hurt originality
- They may not always maintain the exact meaning
- Risk of plagiarism if the tool fails to rewrite properly
- Always proofread and ensure ethical use, especially in academic work
Conclusion
AI paraphrasing tools have become essential writing assistants in 2025. Whether you’re a student trying to reword an essay or a content creator updating blog posts, these tools offer speed, flexibility, and accuracy.
Each of the 13 tools listed has unique features suited for different users. Take time to explore and test a few before choosing the one that fits your workflow.