In the wave of domestic AI writing tools, the vast majority were hastily launched only after ChatGPT went viral. Metaso Writing Cat is different—it had already taken root in the field of Chinese text processing before the large model boom, addressing grammar correction, polishing and rewriting, and similarity detection to serve the most concrete pain points of students and writers. This accumulation from the "pre-large model era" gives it a solid understanding of tool scenarios that trend-following products simply cannot match.
Incidentally, Metaso Technology, its parent company, later created another breakout product: Metaso AI Search. The company’s foundation in Chinese NLP is consistent throughout.
What Is Metaso Writing Cat?
Metaso Writing Cat (xiezuocat.com) is a Chinese AI writing assistant under Metaso Technology, covering the entire writing workflow: AI-generated drafts, polishing and rewriting, grammar correction, similarity detection and plagiarism reduction, and template-based writing. Its product focus has a distinct characteristic: it doesn’t just "write for you," but excels at "helping you revise"—the depth of its processing for existing text is what sets it apart from pure generation tools.
It offers a web editor, browser extension, and Word plugin, allowing it to integrate into users’ existing writing environments.
Core Features
Chinese Grammar Correction
An underrated but highly capable feature. The correction engine, specifically trained for the Chinese context, catches far more than just typos: improper collocations (e.g., mixing up "play an important role" vs. "serve an important role"), missing components, word order issues, punctuation errors, and confusion between possessive particle/adverbial particle/complement marker. These Chinese-specific errors that Word’s English-based checker completely misses are its home turf.
For texts like official documents, contracts, and public-facing content where "one wrong character is embarrassing," running them through Writing Cat before publication acts as an extra tireless proofreading editor. This is also why many professional writers remain long-term users.
Polishing and Rewriting
Paste in existing text and process it as needed:
- Polishing: Preserve meaning while improving quality, smoothing out awkward sentences
- Synonym Rewriting: Rephrase to diversify expression
- Expansion/Condensation: Bidirectional adjustment of length
- Style Conversion: Convert between casual and formal tones
"The inability to spot flaws in one’s own writing is a millennial dilemma." The greatest value of AI rewriting is providing that "second pair of eyes"—even if you don’t accept all suggestions, the issues highlighted alone justify the time spent.
AI Writing and Template Library
Generate drafts from topics, covering argumentative essays, work summaries, announcements, marketing copy, emails, and more. The template library turns high-frequency scenarios (resumes, weekly reports, reading notes, meeting minutes) into fill-in-the-blank forms, making it much friendlier for beginners to start from templates than facing a blank page.
Similarity Detection and Plagiarism Reduction
Writing Cat’s traditional flagship feature and the entry point for students: detect text similarity and assist in rewriting to reduce duplication rates.
It is crucial to clarify the boundaries here: the legitimate use of such features is to help diversify expression and standardize citations—self-checking before submission and paraphrasing quoted content in your own words. Using it to disguise plagiarism as "original work" is academic misconduct; the tool cannot stop this, and you bear the consequences. Meanwhile, universities’ AIGC detection systems are evolving in tandem, rapidly shrinking the room for opportunistic behavior.
Web Search Enhancement
Call real-time search during writing to integrate the latest information into content—addressing the "knowledge expiration" weakness of pure generative tools and proving practical for time-sensitive content.
Comparison with Similar Tools
vs. Biling AI: Close competition in the same track with highly overlapping features; Biling has a larger template library, while Writing Cat is stronger in the technical depth of correction and rewriting. Both offer free versions to try; choose based on your primary use case (select Biling for templates from scratch, Writing Cat for correcting existing text).
vs. ByteDance Volcano Writing: Volcano focuses on full-text polishing, backed by the Doubao model; Writing Cat wins with its longer product history and comprehensive feature set (correction + plagiarism reduction + templates in one). With high homogenization, real-world usability determines the winner.
vs. ChatGPT/Kimi and other conversational AI: Large models have higher upper limits for writing capability and more flexibility for customization, but require manual prompt engineering each time. Writing Cat turns high-frequency operations into buttons, and specialized capabilities like grammar correction are not the strong suit of general conversational models. Deep customization calls for large models; daily workflows and Chinese correction call for specialized tools—a reasonable division of labor.
vs. Grammarly: The benchmark for English writing assistance, but largely ineffective in Chinese. Writing Cat is often called the "Chinese Grammarly," and this analogy holds broadly in the dimension of grammar correction.
vs. Word’s Built-in Checker: The coverage of Chinese errors is not on the same level; they are not comparable.
Who Should Use Metaso Writing Cat?
Students: Polishing first drafts, standardizing expression, and self-checking similarity before submission—Writing Cat’s core user base. The free quota is sufficient for light use. (Reminder again: it assists expression, it is not a cheating tool.)
Official Document and Professional Writers: Chinese grammar correction is an absolute necessity. Government secretaries, editors, and legal document professionals should treat it as the final quality check before publication.
Self-Media Authors: The combination of fast draft generation + AI polishing + typo catching stabilizes the baseline quality of content output.
Writers Lacking Confidence in Their Expression: Having ideas but struggling to write them smoothly? Rewriting and polishing features serve as a portable writing coach—watching how AI revises your sentences is itself a learning process.
Limitations
It suffers from all the common ailments of AI-generated content: fluent but lacking depth; professional domains and unique viewpoints still rely on humans; treat generated content as a starting point, not an endpoint.
The ethical boundaries of plagiarism reduction were discussed earlier and will not be repeated—this is the user’s responsibility, not the tool’s.
The free quota is clearly insufficient for heavy users; subscription costs for frequent use must be factored in. Occasional false positives in correction mean that mechanically accepting all suggestions might actually degrade the text; retain your own judgment.
Pricing
The free version offers basic correction and limited AI quotas; paid memberships are available via monthly/annual subscriptions, unlocking more generation characters, advanced features, and full plugin capabilities. Refer to the official website for specifics.
Here is a low-cost evaluation method: paste the original text of a recent real document you’ve written into it, and see how many correction and polishing suggestions make your heart "skip a beat." That number represents its value to you. For those who deal with Chinese daily, that number is rarely zero.