Cost Optimization

Fable 5 moved to per-token billing at $10/$50 per million tokens on July 12. Here's the real cost math, priced alternatives, and how to route by task class.

GPT-5.6 Sol and Grok 4.5 both landed cheaper than Fable 5 in 48 hours. What the benchmark flip means for your coding-agent stack—and why cost-per-completed-task, not token price, decides the switch.

Moonshot AI released Kimi K2.5, a trillion-parameter open-source model at $0.60/M tokens that matches frontier models. Here is how smart model routing can cut your AI costs by 82% while improving performance.