Chats become knowledge, thinking branches
Every chat builds your knowledge
Every conversation you have becomes lasting knowledge. Branch your thinking to explore ideas freely. Compare GPT, Claude, Gemini and more — with AI memory that grows smarter over time.
Explain the basic principles of quantum computing
Quantum computing is a new computing paradigm that leverages quantum mechanical phenomena such as superposition and entanglement to process information. Unlike classical computers that use bits (0 or 1), quantum computers use qubits as the fundamental unit.
Quantum computing harnesses the properties of quantum bits (qubits) — superposition and entanglement — to achieve exponential speedups on certain problems. Unlike classical bits that can only be 0 or 1, qubits can exist in a superposition of states.
Quantum computing is a revolutionary approach to computation that leverages the principles of quantum mechanics to solve complex problems that are intractable for classical computers.
qubit superposition and entanglement
How is the decoherence problem addressed?
There are three main approaches:
1. Quantum error correction — protecting quantum info through redundant encoding
2. Topological quantum computing — leveraging topological properties for inherent noise resistance
Multi-Model Chat · Branch Thinking · Drill-Down Follow-Up
Ask once, get answers from multiple AIs simultaneously; fork your thinking anytime; select text to dive deeper
Ask GPT, Claude, Gemini and more at the same time — compare answers side by side
Ask GPT, Claude, Gemini and more at the same time — compare answers side by side
Git-style branching — fork, merge and rewind your thinking without getting lost
Git-style branching — fork, merge and rewind your thinking without getting lost
Select text in AI replies to start follow-up threads — drill down without breaking the main conversation
Select text in AI replies to start follow-up threads — drill down without breaking the main conversation
Explain the basic principles of quantum computing
Quantum computing is a new computing paradigm that leverages quantum mechanical phenomena such as superposition and entanglement to process information. Unlike classical computers that use bits (0 or 1), quantum computers use qubits as the fundamental unit.
Quantum computing harnesses the properties of quantum bits (qubits) — superposition and entanglement — to achieve exponential speedups on certain problems. Unlike classical bits that can only be 0 or 1, qubits can exist in a superposition of states.
Quantum computing is a revolutionary approach to computation that leverages the principles of quantum mechanics to solve complex problems that are intractable for classical computers.
qubit superposition and entanglement
How is the decoherence problem addressed?
There are three main approaches:
1. Quantum error correction — protecting quantum info through redundant encoding
2. Topological quantum computing — leveraging topological properties for inherent noise resistance
AI Apps: From Idea to Working Prototype
Describe your idea in plain language, AI generates a complete app with patch-style incremental updates
Generate HTML apps from natural language with real-time WYSIWYG preview
Generate HTML apps from natural language with real-time WYSIWYG preview
Patch-style incremental updates — change only what you want, keep everything else intact
Patch-style incremental updates — change only what you want, keep everything else intact
Full version control — rollback anytime, discuss and iterate in parallel
Full version control — rollback anytime, discuss and iterate in parallel
Build a JSON formatter with beautify, minify and validation
Sure, let me plan this app. It needs three core features: 1. JSON beautify output 2. Minify & validate 3. Error location hints
20+ Built-in AI Tools
AI does more than chat — web search, code execution, document parsing, weather & stocks, all in one conversation
Web search, academic search, web scraping — get the latest info from the internet in real time
Web search, academic search, web scraping — get the latest info from the internet in real time
Python / JavaScript sandbox execution — data processing, calculation, and automation in one place
Python / JavaScript sandbox execution — data processing, calculation, and automation in one place
Document parsing, weather, stocks, maps — 20+ tools on demand, running in parallel
Document parsing, weather, stocks, maps — 20+ tools on demand, running in parallel
Auto Knowledge Extraction from Conversations
AI extracts key knowledge from every conversation to build your personal knowledge base
AI automatically extracts key information from conversations and builds vector indexes
AI automatically extracts key information from conversations and builds vector indexes
Smart context injection — your knowledge base gets smarter the more you use it
Smart context injection — your knowledge base gets smarter the more you use it
Precise semantic search — retrieve historical knowledge across conversations
Precise semantic search — retrieve historical knowledge across conversations
React Hooks Performance Best Practices
useMemo and useCallback avoid unnecessary computations during component re-renders, only recreating values or functions when dependencies change...
useEffect Cleanup & Memory Management
The cleanup function returned by useEffect runs when the component unmounts or dependencies change, used for unsubscribing, clearing timers and releasing resources...
Launcher: One Input Box for Everything
Alt+Space global hotkey, 16 processors parsing in parallel
Calculator, screenshot, screen recording, file search, app launcher — one entry point
Calculator, screenshot, screen recording, file search, app launcher — one entry point
Pinyin, homophone and typo tolerance — find what you need however you type it
Pinyin, homophone and typo tolerance — find what you need however you type it
Clipboard history, system monitor, browser bookmarks — 16 capabilities at your fingertips
Clipboard history, system monitor, browser bookmarks — 16 capabilities at your fingertips
Screenshot · Edit · Record · Cut
From screen capture to final output — a one-stop creative workflow
More Highlights
Every detail is crafted for productivity
End-to-End Encrypted Storage
All your conversations are encrypted before being stored in our database. Your private data is never sold or shared with any third party.
AI Image Semantic Search
Every AI-generated image is indexed with vector embeddings, enabling semantic search so you can instantly find any image from your conversation history.
Multimodal I/O
Chat with images, audio, and video. AI understands and responds across media types.
Transparent Credit Billing
Credits consumed per reply shown in real-time, usage at a glance.
Background Streaming Resumption
AI generation continues in the background and automatically resumes when you return, even after page refresh or network interruption.
Cloud Sync Across Devices
Seamless synchronization of your settings, apps, and preferences across all your devices, keeping everything in sync wherever you go.
Three steps to your AI knowledge journey
Create an Account
Sign up with email, Google or GitHub. Get 1,000 credits instantly — no credit card required.
Choose Your Models
Pick from hundreds of AI models. Free models available anytime, no extra setup needed.
Start Building Knowledge
Start a chat, build an AI app, manage your prompts — every interaction builds your personal knowledge asset.
Access the world's top AI models
Aggregated via OpenRouter — one account, hundreds of models
Simple, Transparent Pricing
Pay as you go. Credits included on signup.
Beyond the browser — real clients
A lightweight cross-platform desktop app and a CLI for automation, so the core experience follows you anywhere.
Start now — turn chats into knowledge
Get 1,000 credits on sign up. Start your AI knowledge journey — every chat builds your knowledge, every thought can branch freely.
Follow on WeChat
Discover the real use cases, hidden features and creative workflows that manuals never tell you
