Features
48 chapters with real-world AI operations tactics
25 interactive widgets for live exploration
3+ embedded case studies (e.g., AFC pitch, client audit)
Agentic coding patterns and agent examples
LLM tier list with independent referee (Artificial Analysis)
Working code: PromptEvaluator and hybrid retriever
Editions 10.4-10.8: new chapters on eval, design, SEO
SEO ROI analysis using actual GSC and Ahrefs data
Design reading with before/after artifacts
Traffic graph truth-checking methodology
Weekly changelog and versioned updates
CLAUDE.md rules and cowork setup
Build vs Buy guidance for CFO
Starter skills and 30-day plan
Good taste showcase with Leon Lin's taste-skill
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
