Ptero: free AI chat with several models and no sign-up
A free, non-profit AI chat site with several models, no account and chats stored only in your browser. Promises never to add paid plans.
About Ptero
Ptero is a free AI chat site that gives you access to several AI models in one place without creating an account. You pick a display name, which is saved on your device, and start chatting.
Its approach to privacy is local-first. Your regular conversations are stored in your own browser rather than on Ptero's servers, so they are still there next time on the same device, and clearing your browser data removes them. The cloud is only used for projects and the custom files you attach to them. The site describes itself as open source.
The most unusual part is its terms. Ptero calls itself a non-profit service and states that it is completely free and will always be free: no premium plans, subscriptions, paywalls or paid tiers, now or later. It does reserve the right to change which models are available. There is a section for developers and a Discord community for news and updates, and the interface is offered in about 20 languages.
The trade-off of local-only storage is that your history does not follow you between devices, and losing browser data means losing chats. Model choice can also change without notice.
Features
- Several AI models in one chat, free
- No account, just a display name
- Chats stored in your browser, not on the server
Use cases
- Comparing answers from different models without paying
- Private one-off questions without creating an account
Screenshots
Frequently asked questions
Is it really free?
Yes. The terms say it is a free, non-profit service and will never add paid plans.
Where are my chats saved?
In your own browser. Clearing browser data deletes them. Only projects and their files use cloud storage.
Checked by Shoaib on
What we verified
- Price?
- Free, no paid plans ever (terms)
- Account needed?
- No
- Chat storage?
- In your browser only
- Cloud use?
- Projects and custom files
- Models?
- Several, may change
- Languages?
- About 20
Picked a name, asked the same question to two different models and checked the chats were still there after a refresh.
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