Best AI writing tools
Writing tools either improve text you have already written — grammar, style, clarity, translation — or generate new copy from a brief. For most people an editing tool plus a general AI assistant covers more than a dedicated copy generator.
DeepL is a translation service built on its own specialized translation LLM, covering 100+ languages for text and offering a separate real-time voice-to-voice mode. It has a free plan plus paid Individual, Team, Business, and Enterprise tiers billed per user.
Grammarly is an AI writing assistant for grammar, clarity, tone and rewriting that works across the web and desktop apps. Since 2025 it is part of the Superhuman suite, with prompt-based AI generation and the proactive Superhuman Go agent alongside the classic checker.
QuillBot is an AI writing platform built around paraphrasing, summarizing, and grammar checking, with added translation, citation, and plagiarism/AI-content detection tools for students and writers.
A readability editor that flags hard-to-read sentences, passive voice and adverbs. The current flagship, Hemingway Editor Plus, adds an AI layer with sentence rewrites, grammar fixes and tone adjustment on top of the long-standing free online highlighter.
Jasper is an AI marketing platform for content, campaigns and brand-consistent copy, now positioned as an agent workspace offering 100+ specialized marketing AI agents alongside a GEO (generative engine optimization) agent.
Writesonic is now an AI Search Visibility platform. Its Article Writer produces long, research-backed articles with competitor analysis alongside tools for tracking brand presence in AI search results.
Comparisons
Your task is different? Describe it in your own words and we'll pick 3 tools for exactly that.