Features
Fill-in-the-blank questions
Open-ended answer evaluation with AI feedback
Spaced repetition scheduling
Audio review (text-to-speech)
Built-in study timer with optional app blocking
WhatsApp study companion (Text Lexie)
Image occlusion for diagrams
Language learning support
PDF and text input support
Offline processing (photos stay on device)
Official LLM leaderboard and ranking
Battle Mode for side-by-side model comparison
Agent Mode for real-world agent evaluation
Multimodal Max for multimodal model testing
Code Arena with web development challenge categories
BullshitBench for nonsense detection evaluation
File upload for third-party AI processing
Public conversation sharing for community research
Leaderboard dataset publicly available
Monthly arena updates across product and research
Search functionality for models and conversations
Community voting on model responses
