Quote:Founded in 2015 as a nonprofit research lab, later restructured as a "capped-profit" company. Still the most-visited chatbot worldwide, though its global market share has been gradually declining amid rising competition.

Quote:Founded in 2021 by former OpenAI researchers, with a strong focus on AI safety and alignment. Claude has become a leading choice for writing, coding, and analytical work, with rapid user growth throughout 2026.

Quote:Formed from the merger of Google Brain and DeepMind. Deeply integrated across Google's ecosystem (Search, Gmail, Docs), and consistently holds the second-largest share of global usage.

Quote:Founded in 2023, Grok is distributed mainly through the X platform (formerly Twitter), with access to real-time data. Its growth is closely tied to X Premium subscriptions.

Quote:Founded in 2022, specializing in research-style answers with cited sources, making it popular for academic and journalistic use.

Quote:Deeply embedded in Microsoft 365 (Word, Excel, Outlook, Teams), aimed mainly at business users and organizations already using Microsoft's ecosystem.

Quote:Built on Meta's Llama model family and integrated across WhatsApp, Instagram, Facebook, and Messenger, giving it one of the largest built-in distribution channels of any assistant.

Quote:Positioned as a more personal, emotionally supportive assistant rather than a productivity tool, though the company's focus shifted after key leadership moved to Microsoft in 2024.

Quote:Founded in 2021 by former Google researchers. Focused on customizable character personas for entertainment and roleplay rather than general productivity.

Quote:An aggregator platform giving access to multiple third-party models (GPT, Claude, Gemini, Llama, and others) under one subscription, rather than a single proprietary model.

Quote:Combines chatbot functionality with a search-engine interface, marketed mainly toward productivity and research workflows.

Quote:Known for open-weight models offering performance close to leading closed models at a fraction of the cost, making it the fastest-growing option among cost-conscious developers.

Quote:Developed by Alibaba's cloud division; one of the most widely adopted open-source model families globally, especially in research settings.

Quote:One of China's earliest large-scale chatbots, tightly integrated with Baidu's search engine and other consumer products.

Quote:Known for very large context-window handling, popular for processing long documents in Chinese and English.

Quote:Spun out of Tsinghua University research, Zhipu AI is one of China's leading independent foundation-model developers.

Quote:Founded by Kai-Fu Lee, positioned as a bilingual (Chinese/English) model family competing on both cost and capability.

Quote:Founded in 2023 by former Meta and Google DeepMind researchers. Europe's most prominent frontier-model developer, with a focus on open models and EU regulatory compliance.

Quote:Focused on enterprise and government clients, with an emphasis on data sovereignty and explainability rather than consumer chat.

Quote:Russia's most widely used voice/chat assistant, integrated into Yandex's search engine, maps, and smart-device ecosystem.

Quote:Built on Naver's HyperCLOVA X model, tailored specifically for Korean language and cultural context, integrated with Naver's search and commerce services.

Quote:Focused on Japanese-language conversational AI and character-based virtual assistants.

Quote:Primarily an enterprise-focused API provider rather than a consumer chatbot, popular for retrieval-augmented generation (RAG) and business search applications.

Quote:An open-source chat interface allowing users to try various open-weight models from different developers in one place.