[opensourcedex]

Ptero is a free, open source ai interaction & interfaces project written in PHP and released under Apache-2.0. It has 1,256 GitHub stars, 14 forks and 0 open issues, and was last pushed 2 days ago. On this registry it ranks #69 of 76 tracked projects in AI Interaction & Interfaces, with 5 head-to-head comparisons available. It gained 19 stars over the last 3 tracked days.

What is Ptero?

What it is

Ptero is a free, open-source AI chat platform that provides access to multiple large language models through a single, clean interface. It is designed for developers, students, and creators who value privacy and simplicity, and it requires no signup to use. The project lives in the PHP and JavaScript ecosystem: the frontend is built with JavaScript, HTML, and CSS, while the backend uses PHP and a REST API, primarily for its WordPress integration. It sits in the AI and Machine Learning category, specifically under AI Interaction and Interfaces.

The concrete problem it solves is fragmented access to capable models. Instead of visiting several provider interfaces or maintaining several accounts, a user selects a model from a dropdown and starts chatting immediately. The project also addresses privacy concerns directly: all conversations are stored locally in the browser, and no chat history is saved on the project's servers. For WordPress site owners, it solves the problem of adding an AI chat surface to an existing site without building one — a shortcode, [mlp_ai_chat], embeds the full chat interface on any page or post.

Key capabilities

  • Access to multiple AI models, including DeepSeek V4, Llama 3.3, Qwen, MiniMax, and Mistral, with more listed as available.
  • One-click model switching, so responses can be compared between models without leaving the conversation.
  • A project-based workspace that organizes conversations by task or client.
  • A media library for uploading and managing files inside chats, giving the model additional context.
  • Privacy-first storage: all conversations stay in the browser, with no chat history saved on servers.
  • No account, signup, payment, or subscription — access to all models is provided at no cost.
  • WordPress integration through a plugin and the [mlp_ai_chat] shortcode.

Who uses it and how

  • Developers, students, and creators use the hosted instance to chat with models without creating an account or paying.
  • WordPress site owners download the plugin from the GitHub repository, upload and activate it, then place the shortcode on a page or post to embed the chat interface.
  • End users visit the live site, choose a display name that is saved locally on their device, pick a model from the dropdown, and begin chatting.
  • Contributors open issues, submit pull requests against the project's code style, or pick up issues labeled good-first-issue.
  • Community members connect with other developers and users on the project's Discord server.

Getting started

End users can visit the hosted instance at https://ptero.pro, choose a locally saved display name, select a model, and chat with no account or payment. WordPress users download the plugin from the GitHub repository, upload and activate it, and embed the interface with the [mlp_ai_chat] shortcode.

When to use it — and when not to

Ptero suits anyone who wants multi-model chat without accounts, payments, or server-side history,

project readme (upstream, from github) — read inline

🚀 Ptero – Free, Multi-Model AI Chat Platform

License: GPL v2 WordPress Plugin

Ptero is a free, open-source AI chat platform that gives you instant access to multiple powerful language models through a single, clean interface. No signup is required, and it is designed for developers, students, and creators who value privacy and simplicity.

Try it live: https://ptero.pro

💖 Sponsors

We are incredibly grateful to our sponsors for their support in keeping Ptero free and accessible for everyone.

Agiler
JTTI

✨ Key Features

  • Access Multiple AI Models: Choose from a wide range of models, including DeepSeek V4, Llama 3.3, Qwen, MiniMax, Mistral, and more.
  • One-Click Model Switching: Instantly switch between different AI models to compare responses and find the best output for your needs.
  • Projects & Organization: Keep your conversations organized with a project-based workspace, perfect for managing different tasks or clients.
  • Media Library: Upload and manage files within your chats, providing rich context for your AI conversations.
  • Privacy-First Design: All conversations are stored locally in your browser. No chat history is saved on our servers.
  • Completely Free: Ptero is a non-profit project, and access to all models is provided at no cost. We do not offer paid plans or subscriptions.
  • Open Source: Ptero is fully open-source under the GPL v2 license. You can inspect the code, contribute, or self-host.

🚀 Quick Start

For End Users

  1. Visit https://ptero.pro.
  2. Choose a display name (saved locally on your device).
  3. Select an AI model from the dropdown.
  4. Start chatting immediately—no account or payment required.

For WordPress Sites

Ptero can be easily added to any WordPress site as a plugin.

  1. Download the plugin from the GitHub repository.
  2. Upload it to your WordPress site and activate it.
  3. Use the [mlp_ai_chat] shortcode on any page or post to embed the full chat interface.

🛠️ Technology Stack

  • Frontend: JavaScript, HTML, CSS
  • Backend: PHP (for WordPress integration), REST API
  • AI Integrations: DeepSeek, Llama, Qwen, MiniMax, Mistral, and more

🤝 Contributing

We welcome contributions from the community! Here's how you can help:

  1. Report Issues: If you find a bug or have a feature request, please open an issue on GitHub.
  2. Submit Pull Requests: We welcome code contributions. Please follow the project's code style.
  3. Join the Community: Connect with other developers and users on our Discord server.
  4. Star the Project: A ⭐ from you helps us reach more people and grow the community.

First-Time Contributors

We label some issues as good-first-issue for newcomers. They are a great way to get started with the project.

📄 License

Ptero is licensed under the GPL v2 or later. This ensures the project remains free and open-source for everyone. For more details, see the LICENSE file.

🙏 Acknowledgements

Ptero would not be possible without the amazing open-source AI community and the providers who make these powerful models accessible. We are grateful to all our contributors and users for their support.

📞 Contact & Support

Frequently asked questions

Is Ptero free to use?

Ptero is open source under the Apache-2.0 licence. There is no licence fee and no seat count — you can self-host it or, where the project offers one, pay a vendor for a managed version instead.

What does Ptero do?

AI Chat with powerful models for free

What is Ptero written in?

Ptero is primarily written in PHP. Its source is publicly available at https://github.com/aminkheddache-dotcom/Ptero, and it has 1,256 GitHub stars.