Sites and apps similar to Sigma Chat include ChatGPT, which has a free version. Other options are Lumo by Proton, DeepSeek, Mistral Vibe and Claude. You can choose from more than 10 AI Chatbots like Sigma Chat for Android, iPhone, iPad, Mac and Windows.
AI language model perfect for generating interactive human-like text in various styles. Built on architecture allowing real-time natural language generation, ideal for applications demanding fluent, relevant output over diverse topics broadened by extensive training data.
United States
Privacy-first AI assistant utilizing zero-access encryption and open-source code, ensuring no data logging, profiling, or training on chats, providing user-controlled, encrypted conversations, with compliance under GDPR and no sharing with third parties.
Switzerland
DeepSeek is a state-of-the-art AI assistant designed to provide intelligent, conversational support across diverse tasks. It leverages advanced natural language processing and machine learning to answer questions, generate creative content, solve complex problems, and offer...
China
Conversational tool providing access to advanced AI models with real-time adjustable moderation, high performance, flexible multi-platform deployment, support for customization, privacy-focused controls, and educational features for interactive learning experiences.
France
EU
AI assistant offering secure chat and API access, specializing in summarization, search, writing, Q&A, and coding, with large token windows, customizable behavior, top data retention policies, and advanced safeguards for secure and reliable enterprise or individual use.
United States
AI-powered engine offers precise answers through a conversational interface utilizing large language models. Features include predictive text, personalized profiles, and Pro Search for advanced AI capabilities. Ideal for summarizing content, exploring topics, and enhancing productivity.
United States
AI assistant offers writing, planning, learning support, generating images from text, and transforming text to speech. Utilizes large language models and syncs across devices without requiring coding skills. Supports dark mode and ad-free experience.
United States
Duck.ai is a feature that allows you to have private conversations with 3rd-party AI chat models, anonymized by DuckDuckGo.
United States
AI chat interface for asking questions and receiving web-grounded responses with source links. It can help draft, rewrite and summarize text, carry on spoken conversations, and generate or restyle images from prompts or uploaded pictures for research.
United States
Grok is an AI-powered assistant, developed by xAI, designed to be maximally truthful, useful, and curious. Get answers to any question, generate striking images, and upload pictures to gain a deeper understanding of your world. With Grok, the universe is in your hands!
United States
Poe is a web-based AI platform that hosts multiple assistant bots—including Claude and various GPT and image/audio models—to provide conversational Q&A, image and audio generation, and automated AI workflows.
United States
Pao AI (刨文助手) is an AI-powered productivity suite for professionals. It bundles 22 scenario-based tools — business writing, contract review, resume optimization, meeting minutes, translation, proofreading, document formatting, PPT generation, invoice OCR, Excel formula...
