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Quick verdict

ChatGPT edges it overall, winning 3 of 4 rating categories. ChatGPT is cheaper to start ($8 vs $30).

Choose ChatGPT if…

You’re most people: the best all-round AI assistant. The most popular AI assistant, with the broadest feature set: chat, deep research, image generation, voice, agent mode and custom GPTs. Plans now run from $8 Go to $200 Pro.

Visit ChatGPT
Choose Grammarly if…

You’re anyone who wants cleaner writing everywhere they type. The writing assistant that works everywhere you type (email, docs, browser and phone) with grammar fixes, tone suggestions and generative AI.

Visit Grammarly

Side by side

ChatGPTGrammarly
Our rating4.7/54.5/5
Value4.5/54.4/5
Features4.9/54.2/5
Ease of use4.7/54.9/5
Output quality4.6/54.3/5
CategoryAI assistantAI writing
Free planYes: limited messages, image generation and deep researchYes: spelling, grammar and 100 AI prompts a month
Cheapest paid plan (monthly)$8/mo$30/mo
Same plan billed yearly - $12/mo
Top planPro (max): $200/moPro: $30/mo
SeatsIndividual plans; Business per userIndividual; teams per member
Trial / refundNo trial; cancel any timeFree plan instead of trial
PlatformsWeb, iOS, Android, Mac, WindowsBrowser extension, Windows, Mac, iOS, Android, Office
Best forMost people: the best all-round AI assistantAnyone who wants cleaner writing everywhere they type

ChatGPT: pros & cons

  • Widest range of features in one app
  • Strong free plan and an $8 Go tier
  • Image generation, voice and agent mode built in
  • Business plan doesn’t train on your data
  • The best models and limits sit behind $100-$200 Pro plans
  • Feature overload for some users
  • Go tier may show ads

Read the full ChatGPT review

Grammarly: pros & cons

  • Works in almost every app and website
  • Great free plan for grammar and spelling
  • Pro is $12/mo billed yearly
  • Monthly billing is much pricier ($30)
  • Generative features trail dedicated AI assistants

Read the full Grammarly review

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