ChatThread vs Arcus

ChatThread is a workflow-first AI chat. Choose a workflow to guide the conversation, then ask naturally for more consistent results—writing, summaries, translation, and more. Explore the Workflow Store to install community-made flows in a tap. Build and manage workflows on desktop, then run them instantly on mobile. Upload files (PDFs, docs, images, spreadsheets) to extract key points and get structured outputs. Start in seconds: tap “Start New Conversation” and pick a flow. Support: chatmagic@163.com

Arcus is the AI chatbot and assistant that puts GPT, Claude, Gemini, Grok and many more frontier AI models in a single conversation. Switch models mid-chat without losing your thread, or let Auto mode pick the best one for each question. No more juggling subscriptions. ALL THE TOP AI MODELS - GPT-6 Astra, Sol and Luna from OpenAI - Claude Fable 5.1, Opus 5.5, Sonnet 5 and Haiku from Anthropic - Gemini from Google - Grok from xAI - Auto mode routes every question to the best model for the job AI THAT DOES REAL WORK - Live web research with citations you can check - Ask questions about your documents: PDF, Word, Excel, PowerPoint, CSV and code files - Summarize contracts, reports and spreadsheets with the key numbers pulled out - Interactive charts for stocks, budgets and comparisons - Write documents and export them to PDF in one tap - Architecture and flow diagrams - Execute code in a sandbox - Send a photo and ask anything - Memory for your preferences and projects across conversations DESIGNED FOR PERFECTION Fast, clean and quiet. No clutter, no dark patterns, no ads. PRIVATE BY DEFAULT Your conversations are never used to train models. Encrypted in transit. Delete any chat, file, memory or your whole account whenever you want. Sign in with Apple and start in seconds. ARCUS UNLIMITED (auto-renewable subscription) - Monthly and Annual plans unlock unlimited usage and all frontier models. - Payment is charged to your Apple Account at confirmation. Subscriptions renew automatically unless canceled at least 24 hours before the end of the period. Manage or cancel anytime in your Apple Account settings. Terms of Use (EULA): https://heyarcus.com/terms Privacy Policy: https://heyarcus.com/privacy