L0NG is still learning — it may produce quirky responses. Your chats help train it!
Continuous Learning AI · Now with Personas & Artifacts
L0NG

An AI that gets smarter with every message. Personas, artifacts, web search, and real learning — all in one interface.

Start Chatting Free API Docs
3
AI MODELS
5+
PERSONAS
∞
LEARNING
20
FREE MSGS
Choose your engine

Three models, infinite possibilities

Switch between speed, balance, and maximum depth at any time — even mid-conversation.

Instant
L0NG Instant
Lightning-fast responses using local retrieval. Perfect for quick Q&A and casual chat.
Speed
96
Depth
40
Context
30
Try Instant
Expert · Recommended
L0NG Expert
Groq-powered reasoning with step-by-step thinking, web search, and image understanding.
Speed
72
Depth
80
Context
75
Try Expert
Apex · Deep Think
L0NG Apex
Maximum intelligence with extended reasoning. Built for research, code reviews, and complex analysis.
Speed
45
Depth
98
Context
95
Try Apex
Powerful capabilities

Everything you need

L0NG combines the best features from leading AI platforms into one seamless experience.

Personas
Switch between Coder, Teacher, Creative, Analyst, and Friend — or create your own custom persona.
Artifacts
Save generated code, text, and images to your personal library. View, reuse, or download anytime.
Web Search
Toggle Search to pull live information before responding. Get current news, prices, and data.
DeepThink
Let L0NG reason step-by-step before answering. See its thought process in expandable blocks.
Image Understanding
Upload images via drag-drop or paste. L0NG describes, analyzes, and answers questions about visuals.
Code Artifacts
Syntax highlighting, copy buttons, live preview for HTML/SVG, and in-browser Lua execution.
Voice Input
Speak your message with browser-native speech recognition. Hands-free conversation.
Shared Rooms
Create live WebSocket rooms. Invite anyone to chat with L0NG simultaneously.
Choose your companion

AI with personality

Switch between specialized personas or create your own custom AI assistant.

💻
Coder
Expert programmer. Clean code, best practices, and detailed explanations.
📚
Teacher
Patient educator. Explains concepts clearly with analogies and checks understanding.
🎨
Creative
Writer and artist. Imaginative language for creative projects and brainstorming.
💬
Friend
Supportive companion. Warm, encouraging, and conversational.
🎭 Try all Personas →

Join the experiment

Sign in to unlock 50 messages per session, save artifacts, create custom personas, and help L0NG learn faster.

50 messages / session
Save unlimited artifacts
Create custom personas
Priority model access