Anthropic
Account needed
Claude
A usage limit per session that resets every 5 hours; the exact number isn't published. Pro gives at least 5× more usage. No image generation.
checked Oct 16
Free AI for writing
For essays, emails and everyday writing, these tools proofread, suggest structure and explain mistakes, all on free plans.
Using it for school? Check your school's rules on AI first.
Tip to stretch the free limit
Write first, then ask for corrections with an explanation of each mistake; Grammarly and QuillBot polish wording, a chatbot checks the argument.
Ready-to-copy prompt
Review this essay for structure, clarity and grammar. Point out the 5 most important fixes and explain each one, without rewriting it for me.
The picks, in the order we'd try them
OpenAI
No sign-up
ChatGPT
Everyday text chats with no fixed message cap (with abuse protection). File uploads, image creation, voice and deep research are limited, with no numbers published.
checked Oct 16 · ⚠
Grammarly
Account needed
Grammarly
100 AI prompts per month, spelling and grammar checks, and the ability to see your writing tone. The page no longer lists a daily limit on advanced suggestions.
checked Oct 17
QuillBot
Sign-up optional
QuillBot
Paraphrasing up to 125 words and summaries up to 1,200 words in 2 modes. The AI chat allows up to 20 requests per day for new users.
checked Oct 16 · ⚠
Google
Sign-up optional
Gemini
Standard usage limits refresh every 5 hours up to a weekly cap, with no usage numbers published. Context window of 32k tokens. Deep Research may be unavailable at peak demand.
checked Oct 17
Other tasks
Updated