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How to chat with several AI models for free, no signup with Ptero

Open the hosted Ptero chat and talk to models such as DeepSeek V4 or Llama 3.3 without an account.

Who it is forA student or developer who needs a quick AI chat with a few models and does not want to create an account or pay for a subscription.

The problemTrying several AI models usually means separate accounts, paid plans, and different interfaces.

The outcomeThe user holds a working chat with a chosen model within minutes, using one interface.

What you need first

  • A web browser with internet access to reach https://ptero.pro
  • Admin access to a WordPress site, for the plugin route only
  • Git or a browser to read the source, for the self-hosting and contributing routes

Steps

  1. Visit https://ptero.pro.
  2. Choose a display name, which is saved locally on your device.
  3. Select an AI model from the dropdown.
  4. Type your prompt and start chatting. No account or payment is required.

Prompt for your agent

Using the Ptero repo (Ptero-ai/Ptero) as the reference, open https://ptero.pro, choose the model named <model name> from the dropdown, and send the prompt <your prompt>. Expected output: a model reply shown in the chat window. Verify that the selected model name appears in the interface before you accept the reply.

Caveat. The README says conversations are stored in the browser and not on Ptero servers, so clearing browser data or switching devices will remove the history.

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