💬AI Chat

Claude

Freemium

Anthropic's AI assistant, renowned for safety, reliability, and exceptional long-text comprehension. Claude supports a context window of up to 200K tokens, capable of processing entire books or large document collections in a single pass, excelling particularly at long-form summarization, deep analysis, and creative writing. Core features include ultra-long text understanding and analysis (200K context), code generation and review, multi-document comparison, creative writing and editing, data extraction and structured output, Artifacts for visual content preview, and Projects for team collaboration. Claude Opus is the most powerful model, while Sonnet strikes an excellent balance between speed and capability. Suitable for academic research, legal document analysis, technical documentation, long-form content creation, code review and refactoring, multilingual translation, and other scenarios requiring deep understanding and high-quality output. Particularly valuable for researchers and content creators dealing with large volumes of text. Ideal for scholars, researchers, lawyers, software engineers, technical writers, editors, and other professionals who demand high content quality and accuracy. Also an excellent choice for enterprises prioritizing AI safety and response quality. Anthropic's Constitutional AI training methodology ensures model behavior aligned with human values, with industry-leading safety performance. The 200K context window provides a decisive advantage when processing very long documents, making it the go-to solution for enterprise-grade text processing.

Gemini

Freemium

Google's multimodal AI model family, deeply integrated with the Google ecosystem (Gmail, Docs, YouTube, Search, etc.), supporting text, images, audio, video, and code inputs. The Gemini series spans Ultra, Pro, Flash, and Nano editions, covering scenarios from cloud to on-device deployment. Core features include multimodal understanding (text, image, audio, video), ultra-long context (Gemini 2.0 supports 2 million tokens), Google app integration (Gmail summarization, Docs writing assistance), Gemini Live voice conversations, Deep Research for in-depth investigation, code generation and debugging, and YouTube video content analysis. Suitable for daily Q&A, email handling, document writing, code development, video content analysis, deep research, and more. The deep integration with Google's ecosystem makes it particularly efficient in office productivity scenarios, usable directly within Gmail, Docs, and other applications. Ideal for heavy Google ecosystem users, Android phone users, developers (via Google AI Studio and Vertex AI), researchers, and students. The free tier is feature-rich, while Gemini Advanced unlocks stronger capabilities. Backed by Google's formidable technical strength and search capabilities, multimodal understanding and ultra-long context are its key differentiators. Deep integration with the Google suite dramatically lowers the barrier to entry, making it one of the most ecosystem-advantaged AI assistants.

通义千问

Free

Alibaba Cloud's large language model series, supporting conversation, document analysis, code generation, and more. Tongyi Qianwen excels in Chinese language understanding, with deep optimization for Chinese culture, business practices, and linguistic conventions, making it a top choice for enterprise users in China. Core features include multi-turn dialogue, long document analysis and Q&A (supporting 10 million tokens of context), code generation and explanation, image understanding, PPT generation, Tongyi Tingwu (audio/video transcription and analysis), Tongyi Wanxiang (AI image generation), and more. Multiple versions of the Tongyi Qianwen series have been open-sourced for developers to deploy freely. Suitable for enterprise knowledge management, customer service Q&A, document processing, meeting minutes organization, code development assistance, content creation, and more. Widely deployed in Chinese enterprise service scenarios and deeply integrated into Alibaba ecosystem products like DingTalk. Ideal for enterprise users in China, developers, students, and general users. An excellent choice for those needing Chinese-optimized AI and domestic cloud service support. Enterprise users can customize and deploy privately via the Alibaba Cloud Bailian platform. Alibaba Cloud's powerful cloud computing infrastructure ensures service stability. First-class Chinese understanding and domestic scenario adaptation, combined with an open-source strategy that fosters developer community growth, make it a reliable choice for enterprise-grade AI applications.

Kimi

Free

Moonshot AI's long-text AI assistant, which rapidly gained popularity for its powerful ultra-long context processing capabilities. Kimi supports a context window of up to 2 million Chinese characters, capable of processing and deeply understanding massive documents in a single pass, standing out uniquely in document reading, research, and analysis. Core features include ultra-long text understanding and analysis (2 million characters), simultaneous multi-file upload and comparative analysis, web search and information synthesis, code generation and debugging, webpage content extraction and analysis, image text recognition (OCR), and professional report generation. Kimi also offers a browser extension for convenient on-demand access. Suitable for academic paper reading, legal contract review, technical document analysis, market research report writing, novel reading and summarization, and other scenarios requiring deep understanding of large text volumes. Particularly valuable for knowledge workers who need to rapidly digest substantial information. Ideal for graduate students, scholars, lawyers, financial analysts, consultants, journalists, and editors — professionals in information-intensive roles. For anyone who frequently needs to read and analyze long documents, Kimi is a productivity game-changer. The 2-million-character ultra-long context window is its core competitive advantage, surpassing competitors in both depth and breadth of document understanding. Natural and fluent Chinese comprehension paired with generous free quotas make it the go-to tool for long-text AI scenarios in China.

豆包

Free

ByteDance's AI chat assistant, available across web, mobile app, mini-program, and desktop client. Doubao is powered by ByteDance's self-developed Doubao large model (ByteDance LLM), delivering a smooth and natural Chinese conversation experience, with a leading user base in China's domestic AI assistant market. Core features include multi-turn dialogue, image generation and understanding, AI-powered web search, document analysis (supporting PDF, Word, PPT, and more formats), webpage content extraction, AI drawing, AI character roleplay, and voice cloning. Doubao also supports creating personalized AI agents to meet diverse scenario needs. Suitable for everyday chatting, knowledge Q&A, content creation, learning support, entertainment and interaction, and a wide range of other scenarios. Doubao's multi-device sync ensures a consistent experience across all usage environments, with a particularly excellent mobile experience. Ideal for general users in China, students, content creators, and more. Doubao's free pricing and low barrier to entry make it one of the most accessible AI assistants in China. The top choice for users seeking an excellent Chinese conversation experience at no cost. ByteDance's strong product capabilities and traffic ecosystem provide Doubao with a broad user foundation. A completely free pricing model eliminates barriers to entry, and multi-device coverage with Chinese experience optimization gives it strong competitive momentum in the domestic market.

Poe

Freemium

Quora's AI model aggregation platform, allowing users to access multiple mainstream AI models — including Claude, GPT, Gemini, Llama, and more — from a single interface. Poe's core value lies in eliminating the need to switch between multiple AI services, offering a one-stop experience of different models' capabilities and styles. Core features include multi-model aggregated access, model comparison (viewing different models' responses to the same question), custom Bot creation (with customizable prompts and knowledge bases), a community-shared Bot marketplace, image generation, file analysis, and web search. Poe also supports developers in publishing their own AI Bots via API. Suitable for model capability comparison and testing, selecting the optimal model for different tasks, community AI application exploration, and rapid prototype validation. When you're unsure which model best fits your current task, Poe's multi-model comparison is exceptionally useful. Ideal for AI enthusiasts, developers, product managers, and anyone who wants to compare and experience different AI models. For users wanting access to multiple top-tier AI models on one platform without managing separate subscriptions, Poe offers convenient unified pricing. Multi-model aggregation is Poe's unique selling point — users can choose the best model for each task without registering and paying for each service separately. The community Bot ecosystem enriches the usage scenarios, making it the best entry point for AI model exploration and comparison.

DeepSeek's domestically-produced large model, which has garnered worldwide attention for its powerful reasoning capabilities and completely free pricing. DeepSeek excels in mathematical reasoning, code generation, and logical analysis, with its open-source models receiving extremely high praise from the global developer community. Core features include deep reasoning (DeepSeek-R1's chain-of-thought reasoning), web search, file upload analysis (supporting images, PDF, Word, Excel, and more formats), ultra-long context (128K tokens), code generation and debugging, and mathematical problem solving. DeepSeek also provides API access for developers. Suitable for mathematical reasoning, programming and development, academic research, logical analysis, complex problem solving, content creation, and more. Its powerful reasoning capabilities make it particularly outstanding in tasks requiring rigorous logic and deep thinking. Ideal for developers, researchers, students, mathematics enthusiasts, and professional users with high demands for AI reasoning capabilities. The completely free pricing makes it the top choice for users on a budget who still seek high-quality AI services. Powerful reasoning capabilities (especially the R1 model) and completely free pricing are DeepSeek's core strengths. Its open-source strategy and technical transparency have earned the trust of the global developer community, making it one of the most internationally recognized representatives of Chinese AI companies' technical prowess.

ChatGPT

Freemium

OpenAI's flagship AI chat assistant, built on the GPT series of large language models. Supporting text conversations, code generation, image understanding, data analysis, and more, ChatGPT has become one of the most widely used AI products globally since its launch in late 2022, continuously leading the frontier of large model development. Core features include natural language conversation, web search (ChatGPT Search), image generation (integrated DALL-E), code interpreter (data analysis and visualization), file upload analysis, GPTs custom bots, voice conversation, and more. Plus and Pro tiers unlock access to more advanced models and longer context windows. Suitable for everyday Q&A, learning support, copywriting, code debugging, data analysis, brainstorming, and virtually every aspect of work and life. Students can use it for homework help and learning, while professionals can leverage it for report writing and data organization. Ideal for anyone looking to boost work and study productivity — from students and teachers to developers, entrepreneurs, and enterprise employees. The free tier covers basic needs, while paid plans suit heavy users and professional scenarios. OpenAI's continuously iterated flagship, with industry-leading model capabilities, a rich ecosystem of plugins and GPTs, making it one of the most comprehensively capable AI assistants available today.