Best Free AI Tools: Honest Picks by Task
The best free AI tools organised by task: writing, research, images, transcription, coding and presentations, with what free plans include and privacy tips.
How to protect your privacy with AI chatbots: turn off training on your chats, manage history and memory, use temporary chats and know what never to paste in.

Everything you type into an AI chatbot is data: your questions, the documents you upload, the photos you share and, increasingly, what the assistant remembers about you. Depending on your settings, conversations may be stored for a long time, read by human reviewers for quality and safety, or used to train future models. A few minutes in the settings menu, and some simple habits, give you far more control.
Policies differ between services and change often, but most consumer AI assistants may:
Business and enterprise plans usually have stricter defaults, often excluding your data from training by contract. If you use AI at work, use the account your employer provides and follow its policy.
AI is now built into email, office suites, phones, browsers and messaging apps, and each feature may send your content to a cloud service to process it. Check the AI settings in each app separately, not just in your main chatbot, and switch off features you don’t use. Meeting recorders and transcription tools deserve extra care, because they capture other people too; see our guide to AI meeting notes.
Look for a setting that controls whether your conversations can be used to train or improve models. Names vary: in ChatGPT it sits under data controls, and other assistants have similar toggles in their privacy settings. For most people, switching it off costs nothing.
Decide how long your history is kept, and delete old conversations you no longer need. Some services let you set history to delete automatically after a period.
Many assistants offer a temporary chat mode that isn’t saved to your history or used for training, although it may be kept briefly for safety checks. Use it for anything personal.
Memory lets an assistant remember facts about you, such as your job, family or preferences. It’s convenient but builds a profile. Review what’s stored, delete anything you don’t want remembered, or switch memory off.
If you’ve connected email, cloud storage, calendars or browsers, check what access you’ve granted and remove anything you don’t use. The same goes for browser extensions and third-party apps built on AI models, which have their own privacy policies. Custom assistants and shared projects can also expose files to others; see custom AI assistants explained.
| Don’t share | Why |
|---|---|
| Passwords, security codes, bank details | Direct risk of account takeover or fraud |
| Passport, ID or social security numbers | Identity theft |
| Health records and test results | Highly sensitive personal data |
| Other people’s personal data | You may not have the right to share it |
| Confidential work documents or client data | Contracts, laws and employer policies may forbid it |
| Unreleased financial results or trade secrets | Commercial and legal risk |
If you need help with a sensitive document, remove names and identifying details first, or use an approved work tool. Our guide to summarising PDFs with AI safely shows how.
Sharing a conversation usually creates a link that anyone can open. Shared chats have occasionally been indexed by search engines. Check what you’re sharing, and delete old shared links from your settings.
Many AI services require users to be at least 13, and some require parental consent for under-18s. Talk to children about what not to share, and check school guidance on approved tools; see our guide to AI for students.
Open models running on your own computer keep your data on your device, with no account at all. They’re less capable than the biggest cloud models but are improving fast; see how to run AI models locally.
Yes, for most everyday tasks, as long as you manage your settings and avoid sharing sensitive personal or confidential information.
Yes. Turn off model improvement in its data controls, or use a temporary chat. Similar settings exist in other major assistants.
It removes it from your history. Services may keep deleted data for a limited period for safety or legal reasons, as described in their privacy policies.
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The best free AI tools organised by task: writing, research, images, transcription, coding and presentations, with what free plans include and privacy tips.
ChatGPT, Claude and Gemini compared by task: writing, analysis, coding, research, images, integrations and privacy, plus a simple way to test which suits you.
What custom AI assistants, custom GPTs and projects are, how to set one up with instructions and files, practical use cases, and the privacy settings to check.