火山写作 (Writingo) is ByteDance’s free AI writing assistant for English writing improvement, offering grammar correction, rewriting and polish.
Writingo helps Chinese users write better English: paste a draft and the tool corrects grammar, improves word choice and rewrites sentences with more natural phrasing. Its one-click optimization can polish an entire piece while preserving the author’s intent, and tone adjustments adapt text for academic, professional or casual contexts. The tool draws on ByteDance’s language models with specific tuning for Chinese-English interlanguage patterns. It is free to use and widely adopted by students and professionals.
Paste your English draft into the editor and review the flagged grammar and expression issues with suggested fixes. Use one-click optimization for whole-document polishing or compare sentence-level rewrites and keep the more idiomatic phrasing before exporting.
火山写作 currently offers its core writing features completely free of charge, with no paid tiers required for standard usage.
Chinese students, researchers and professionals who write in English and want improvement beyond basic grammar checking.
Yes. Writingo is currently completely free, and its core correction, polishing and rewriting features can be used directly at no cost.
Writingo is provided as an online tool without a public API; ByteDance’s Doubao products provide corresponding large-model capabilities for developers.
Compared with tools like Grammarly, Writingo targets Chinese-English interlanguage problems more precisely and is completely free, which suits users leveling up their English writing.
Writingo focuses on English writing and supports Chinese composition only lightly; for heavily formatted long documents, combine it with a professional editor. Its completely free pricing is the biggest advantage.
Writingo focuses on English writing improvement with limited Chinese support; for Chinese composition, pair it with other domestic large-model writing tools.
Yes. Grammar and expression issues come with one-click fixes, and sentence-level rewrites can be compared side by side before you keep the best phrasing.