Best AI tools for writing

freemium · Free tier available

General-purpose assistant; the default starting point for most text tasks.

1. Sign up at chatgpt.com with email or Google
2. Describe your task in a new chat; attach files if needed
3. Save repeat prompts as a Project or custom GPT

From £18/mo (£15/mo billed annually) · Free tier available ✓ checked 2026-10-16

Strong at long documents and careful writing.

1. Create an account at claude.ai
2. Upload your document or paste text into a chat
3. Turn on Artifacts to get editable docs or code alongside the chat

From £10/mo (Pro) · Free tier available ✓ checked 2026-10-16

Reliable grammar and tone fixes everywhere you type.

1. Sign up at grammarly.com
2. Install the browser extension or desktop app
3. Accept suggestions as you type in email, docs and chat

From $59/seat/mo (Pro) · No free tier ✓ checked 2026-10-16

Marketing-team copy tool with brand voice controls.

1. Start a trial at jasper.ai
2. Set up your Brand Voice and knowledge
3. Use an app/template to generate the copy you need

From £4.49/mo (AI Plus) · Free tier available ✓ checked 2026-10-16

Best fit if you live in Google Workspace.

1. Sign in at gemini.google.com with your Google account
2. Ask your question or use @Gmail / @Drive to pull in your files
3. Open the response in Docs or Sheets via Share & export