Qwen.

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.

Google Gemini

Chat models

Google's Gemini assistant helps with explanations, brainstorming, research, and questions about text or images. The free account includes access to Gemini models and selected creative and research features. It is particularly convenient for people who already use a Google account, with premium plans offering higher limits rather than being mandatory.