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It's a split decision.
Pick ChatGPT for a general-purpose assistant that answers questions, handles uploads, generates images and offers Deep research; its paid Go plan starts at $8/month, but many usage caps are unpublished. Pick Grammarly if your main job is polishing writing across apps: Free includes proofreading and tone suggestions, while Pro costs €12/month and adds 2,000 AI prompts per member monthly, rewrites and detection. The prices use different currencies, so they are not directly comparable.
01Side by side
| ChatGPT | Grammarly | |
|---|---|---|
| Starting paid price | $8/month for Go (USD) | €12/month for Pro |
| Free plan | Yes; everyday text chats, limited tools | Yes; proofreading, tone, 100 prompts/month |
| Best for | Chat, research, images and file-based questions | Proofreading and writing fixes across apps |
| Core strength | Conversational answers and a broad tool set | Grammar, tone, clarity and sentence rewrites |
| Learning curve | Not specified in the source | Not specified in the source |
| Integrations and context | Uploads and saved-chat context when logged in | Works in text boxes, including Zendesk |
| Team and seat costs | Business: $25/user monthly; minimum two seats | Pro: €12/month; Enterprise pricing is custom |
| Support | Support details not published | Support details not published |
ChatGPT Choose ChatGPT if
- Choose ChatGPT if you need one assistant for varied tasks.
- Choose ChatGPT if image generation and Deep research matter.
- Choose ChatGPT if file uploads and saved-chat context help.
Grammarly Choose Grammarly if
- Choose Grammarly if proofreading is your main need.
- Choose Grammarly if you want tone and clarity suggestions in apps.
- Choose Grammarly if full-sentence rewrites justify Pro's price.
02Pricing compared
ChatGPT has a free plan, then Go at $8/month, Plus at $20/month and Pro starting at $100/month, according to the pricing information checked on November 6, 2026. Go, Plus and Pro are monthly-only. ChatGPT’s free and paid plans have usage limits, but many exact caps are not published. Business starts at $25 per user monthly, or $20 per user monthly with annual billing, with a two-seat minimum; Enterprise and Edu are custom-quoted.
Grammarly also has a free plan. Pro is listed at €12/month and includes 2,000 AI prompts per member monthly; no annual price is published. A free Pro trial is available, with an email reminder two days before it ends. Enterprise is custom-priced. These prices use different currencies, so the entry-level paid plans are not directly comparable.
03Features and depth
ChatGPT is the broader assistant. Its chat interface answers questions, and logged-in users can upload files and images for tailored responses. The homepage also lists image generation and Deep research. Saved chats can inform later answers when users are logged in. The free plan includes limited uploads, image creation and research, but exact caps are not published; paid plans expand access, with the specific limits still unclear.
Grammarly is built around improving writing where you work. It checks grammar, clarity and tone, and works inside apps such as Zendesk and other text boxes. Its homepage lists paragraph rewrites and a Humanizer agent; Pro adds full-sentence rewrites, tone adjustment, plagiarism and AI-text detection, plus one style guide and one brand tone. Pro includes 2,000 AI prompts per member monthly. ChatGPT can help draft and revise, but the published details do not list Grammarly-style proofreading or in-app writing support as core ChatGPT features. Choose by task: broad questions and uploads, or focused writing feedback.
04Ease of use and learning curve
The simpler fit depends on what you need to do. ChatGPT centers on a conversation: type a question, then continue with follow-ups or upload a file or image when logged in. Its range of tools gives it more possible uses, but the pricing information does not make all usage limits clear.
Grammarly focuses on checking and refining text, including in apps such as Zendesk and other text boxes. That keeps it close to the writing task, though its advanced features sit in Pro. The published reviews score ChatGPT’s ease of use at 8 and Grammarly’s at 7; those scores are review assessments, not a guarantee of how either product will fit your workflow.
Questions people ask
Is Grammarly considered AI?
Yes. Grammarly is described as an AI-powered writing assistant. Its features include grammar, clarity and tone suggestions, and its homepage lists AI-focused tools such as a Humanizer agent and an AI Detector agent.
What is the Microsoft equivalent of Grammarly?
The published product information does not name a Microsoft equivalent, so we can’t make a direct comparison from these details. Grammarly is described as proofreading and writing assistance that works in apps and text boxes; check Microsoft’s current product information for a feature-by-feature match.
Is Grammarly $12 a month or a year?
The pricing information lists Grammarly Pro at €12 per month, not $12. It does not publish an annual price. The free plan costs nothing, and a free Pro trial is available; the listing says an email reminder arrives two days before the trial ends.
Is Grammarly a good grammar checker?
The published review describes Grammarly as a good free proofreader and gives it an overall score of 6.5, with 7 for features and ease of use. Its free plan checks writing and shows tone; Pro adds full-sentence rewrites and plagiarism and AI-text detection.