Anyword vs LanguageTool

Anyword is an AI copywriting platform for marketing teams, built around predicting which copy will perform before it is published. The company began in 2013 as Keywee, a New York and Tel Aviv startup that optimised social ad campaigns for publishers, and relaunched in March 2021 as Anyword after years of collecting ad performance data. Its core job is generating ads, emails, landing pages and social posts and scoring each variation for likely engagement or conversion.

Every piece of copy gets a Predictive Performance Score from 0 to 100 based on audience, channel and goal, and the editor updates predictions as you edit. Brand Voice stores tone, audiences and guidelines; Blog Wizard drafts long-form posts with a plagiarism check. Business and Enterprise tiers add custom models trained on your past copy, content intelligence against Anyword's A/B test dataset, automated website messaging tests and a Performance API that feeds predictions into your own AI agents. Self-serve plans start at $49 a month with a 7-day trial.

Anyword fits performance marketers and agencies that test lots of ad and email variants and care about conversion more than prose. It is pricier than general AI writers, prediction quotas are tight on lower plans, and the best features sit in custom-priced tiers. Jasper is stronger for brand-wide content operations, Copy.ai for GTM workflows, and ChatGPT alone is cheaper for occasional copy.

Anyword now positions itself as LLM-agnostic: its API and Chrome extension add performance scoring on top of ChatGPT, Gemini and Notion.

LanguageTool is a grammar, spelling and style checker that works in more than 30 languages. Daniel Naber started it in 2003 as an open-source project during his computational linguistics studies in Germany, and it became a business when he teamed up with Christopher Blum through LanguageTooler GmbH in Potsdam. In April 2023 it was acquired by Learneo, the US education company that also owns QuillBot.

It runs as browser extensions, desktop apps for macOS and Windows, add-ins for Microsoft Word, Outlook and Google Docs, and an online editor. Since spring 2026 the browser extension requires Premium, so the free Basic plan mainly covers core checks in the web editor, up to 2,000 characters per text. Premium raises the limit to 150,000 characters per check, unlocks thousands of extra style and grammar rules for English, German, French, Spanish, Dutch, Polish and Portuguese, and adds unlimited paraphrasing and a personal style guide. Team plans add user management and a shared dictionary and style guide.

LanguageTool fits people who write in several European languages and want one checker for all of them. Its English suggestions are less extensive than Grammarly's, and it lacks Grammarly's tone and generative features. QuillBot is stronger for paraphrasing and Wordtune for rewriting whole sentences, but neither matches LanguageTool's language range.

A practical tip: the open-source engine can be self-hosted for privacy-sensitive use, though without Premium's extra rules. Premium costs $24.90 monthly or $69.90 yearly, with a 14-day trial and a 14-day money-back guarantee.