Kimi K3.1 Pro uses 19x fewer tokens than DeepSeek V4.1 Flash for Three.js code generation

Kimi K3.1 Pro generated a functional 3D V8 engine simulation in Three.js using 3.5M tokens, whereas DeepSeek V4.1 Flash used 67.2M tokens for the same task. Despite Kimi's higher per-token cost, DeepSeek's heavy use of input caching resulted in a lower total estimated cost of $0.86 compared to Kimi's $2.16.