Polymeti is one place to chat with, compare, and combine multiple AI models. You can start with the models the Free plan includes, or bring your own API keys. Your conversations stay in your browser, and you stay in control of your data. This page answers the questions people ask most when they start out.
Getting started
- Log in with your Google account.
- Start a chat from the home screen, pick a model, and send your first message. The Free plan’s models work right away.
- Switch to the BYOK plan and add an API key for any provider whose other models you want (see below).
Plans
There are two plans you choose yourself, and you can move between them at any time. Compare the plans, or read about each one:
- Free: a few models, within limits, with no API key needed.
- BYOK: your own API keys, sent straight to the provider.
What does the Free plan include?
The Free plan is the one to start on without a key. It includes a few models you can use for free, up to a set number of messages, so you need no API key and no payment to start. Messages to these models pass through our server on the way to the provider. It passes them on and stores nothing.
Do I need my own API key?
Not to start: the Free plan’s models are free. To use every model of a provider, with no limit from us, switch to the BYOK plan in Settings → API Keys and add your API key there. BYOK means “bring your own key”: your messages go straight from your browser to the provider, and you’re billed directly by the provider for what you use. The plan decides which keys are used: on BYOK only your own, on the Free plan only ours, and your saved keys wait unused.
Which AI providers can I use?
You can connect models from OpenAI, Anthropic, Google, xAI, DeepSeek, Moonshot AI, and OpenRouter. Each provider processes your requests under its own terms — add an API key for any of them and its models become available in the model picker.
The models page lists every model we support, with what each one can do and what it costs.
Where are my conversations stored?
All your chats, messages, attachments, and app settings are stored locally in your own browser (IndexedDB). They are not uploaded to or kept on our servers. That keeps your conversations private to your device — but it also means clearing your browser storage will remove them, so back up anything you want to keep.
Can I back up or sync my chats?
Yes. From Settings → Sync you can connect your own Google Drive and sync your conversations on demand. Your transcripts are stored in your Drive, not on our servers, so you can carry them between devices while keeping ownership of the data.
How are projects and tags used?
- Projects group related chats together so a topic stays in one place.
- Tags label chats so you can filter and find them quickly.
How do I track my usage?
The Usage page shows how many tokens your requests have used. We record counts only, never the content of your messages. Actual charges come from the AI provider whose API key you used, under that provider’s pricing. Messages to the Free plan’s models are not charged to you.
Is my data private?
Your conversations live in your browser. On the BYOK plan, messages go straight from your browser to the AI provider you chose, and your API keys never reach our servers. On the Free plan, and on any other plan that uses our key, messages pass through our server on the way, because it sends them to the provider for you.
Our server passes them on as they are and stores none of them. For such a message it records only that one was sent, to apply the plan’s limits. You can verify all of this yourself: see How your data flows. For the full details on what we store and why, see our Privacy Policy.
How do I delete my data or account?
- Delete a conversation — remove it in the app, or clear your browser storage to remove them all.
- Delete your usage history — Settings → Account → Privacy.
- Delete your account — Settings → Account → Danger Zone. This removes your server-side identity and usage data.
A note on your data
The Service may change or be interrupted, and because your conversations are stored in your browser they can be lost — please export anything important. See our Terms of Service for the full picture.
Still need help?
If your question isn’t covered here, email us at [email protected] and we’ll be glad to help.