ChatGPT
by OpenAI
General-purpose assistant for writing, analysis, files, images and voice.
Free; Go $8/mo (US); Plus $20/mo; Pro from $100/mo
AI for writing
Drafting, editing and rewriting with AI without sounding like a robot.
Guides
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Tools for writing
All tools
Claude
by Anthropic
Assistant known for long documents, careful writing and coding help.
Free; Pro $20/mo ($17/mo yearly); Max from $100/mo
Privacy & risks
- Trains on your data
- You choose
- Minimum age
- 18+
- Free, Pro and Max users choose whether their chats can be used for training. Team, Enterprise and API data is not used for training.
DeepSeek
by DeepSeek
Free chat assistant from Chinese lab DeepSeek, strong at reasoning and coding.
Free app and web chat; paid API for developers
Privacy & risks
- Trains on your data
- Yes
- Minimum age
- Intended for adults; under 18 needs guardian consent
- Its privacy policy says user data is used to train its models.
- Data is processed by a Chinese company. Check your employer's or school's rules before using it with work or personal data.
Grammarly
by Superhuman (Grammarly)
Grammar, tone and clarity suggestions wherever you type.
Free; Pro $12/mo
Privacy & risks
- Trains on your data
- Yes, opt-out
- Minimum age
- 13+ (16+ in the EU)
- "Product Improvement and Training" is on by default for individual accounts. Turn it off in your account settings.
- A proposed class action filed in March 2026 (S.D.N.Y.), led by journalist Julia Angwin, challenges the "Expert Review" feature. The claims are allegations and have not been decided.
Le Chat
by Mistral AI
Mistral's European assistant for chat, writing and research, with a cheap student plan.
Free; Pro $14.99/mo; Student $5.99/mo; Team $24.99/user/mo
Privacy & risks
- Trains on your data
- Yes, opt-out
- Free, Pro and Student chats are used for training by default. You can turn this off in settings; Team plans are excluded.
ProWritingAid
by ProWritingAid
Grammar and style editor with in-depth reports for fiction and long-form writing.
Free; Premium $10/mo yearly ($30 monthly); lifetime from $399
Wordtune
by AI21 Labs
Rewrites your sentences to sound clearer, shorter or more formal.
Free; Advanced $6.99/mo ($4.89/mo yearly); Unlimited $9.99/mo