@hackproduct9: Claude's model history is a branching strategy—not one straight ladder. Claude 1 and 2 established chat and long context. Claude 3 split into Haiku for speed, Sonnet for balance, and Opus for depth. Claude 3.7 added hybrid reasoning; Claude 4 pushed coding and agents. By 2026, Sonnet 5 and Opus 5 led everyday work while Fable and Mythos formed a frontier—with Mythos limited to vetted use. The animation keeps the tree fixed as one signal travels from 2023 to Sep 2026. The practical lesson is model selection: choose the lightest branch that can finish the job; move upward only when depth, duration, or autonomy demands it. Timeline checked against official Anthropic announcements. Availability and safeguards change. Screenshot the final frame. Which model family next? #HackProduct #Anthropic #ClaudeAI #ClaudeCode #AIAgents