Grammarly vs Inkey

Grammarly

Still the default for catching mistakes inside other people's software, but the free tier has quietly become an AI-prompt meter and the honest price is $30 unless you commit to a full year.

Pros

• +Runs inside the apps people already write in rather than as a separate editor
• +Free tier still covers spelling, grammar and tone detection with no time limit
• +Pro folds in plagiarism and AI-text detection that rivals charge for separately

Cons

• −The $12 headline is the annual rate; paying monthly costs $30
• −Free AI allowance is 100 prompts a month and depletes quickly
• −No public API, so it cannot be embedded in another product
• −Enterprise pricing is not published anywhere on the site

Inkey

The value is consolidation: paraphrasing, a plagiarism check and an AI detector under one $4.99 subscription costs less than any one of them bought separately. A free-for-life tier lets you test it honestly. The catch is the word meter — 10,000 words a month is a couple of long essays, and everything you run through any of the 30 tools draws on the same pool.

Pros

• +More than 30 student tools under a single subscription
• +Plagiarism checking and AI detection included rather than sold as add-ons
• +Maths word-problem solving alongside the writing tools
• +Free tier is permanent at 1,000 words a month with no card

Cons

• −Word quotas are shared across every tool, so a paraphrase costs the same budget as an essay
• −No operating company, country or team is disclosed anywhere on the site
• −No API and no editor or browser integration
• −Five tiers separated mostly by word count rather than capability

Is Grammarly cheaper than Inkey?

Grammarly starts at $12/mo. Inkey has a free tier; what its paid plans cost is not confirmed by us yet.

Does Grammarly or Inkey have a free tier?

Both: Grammarly has a free tier, and Inkey has a free tier.