Proton Lumo.

Qwen

Chat models

Alibaba's official browser assistant gives you direct access to the Qwen model family for questions, reasoning, drafting, and learning. Its broader Qwen Studio experience also supports creative and collaborative work. This is a useful first stop for trying Qwen without setting up an API or running models locally.

DeepSeek

Chat models

DeepSeek's official chat service makes its own model family accessible through a familiar question-and-answer interface. It is suited to explanations, brainstorming, mathematical reasoning, and working with text. The official consumer experience includes web search, a deeper-thinking option, and file text extraction, with history available across devices.

ChatGPT

Chat models

OpenAI's general-purpose assistant combines conversation with web search, document and image understanding, and learning support. You can use it to explain unfamiliar concepts, revise text, plan projects, or ask questions about uploaded material. The free plan provides a practical introduction, with limits on heavier tools and advanced model usage.

Claude

Chat models

Anthropic's assistant is useful for discussing ideas, reviewing documents, analyzing images, and revising long passages of text. Its free plan also includes web search and content creation features. You can follow up conversationally to refine an answer, while keeping in mind that free usage is limited and model availability changes.