Sonnet 5 was supposed to be cheaper. It cost me more than Fable 5

A user compared Claude Sonnet 5 and Fable 5 on two coding tasks. For a RAG Debugger, Sonnet was cheaper but slower, while Fable was faster and preferred. For a complex Clash Royale-style game, Sonnet took longer, cost more, generated more tokens, and required multiple fixes, despite being advertised as cheaper. The user noted that Sonnet 5's cost escalated quickly for longer coding tasks, suggesting that cheaper per token doesn't always mean cheaper per completed task.