Kwaipilot-AutoThink 40B: How This Token-Efficient LLM Slashes Cloud Costs by 40%

When Big Models Stop Overthinking: A Deep Dive into Kwaipilot-AutoThink 40B An EEAT-grade technical blog for developers and product teams Target readers Engineers choosing their next foundation model Product managers who pay the cloud bill All facts, numbers, and code snippets in this article come from the official arXiv paper 2507.08297v3 and the accompanying Hugging Face repository. Nothing is added from outside sources. Table of Contents Why “Overthinking” Is the New Bottleneck The Two-Stage Recipe: From Knowledge Injection to Smart Gating Token-Efficiency Report Card: 40 B Parameters vs. the Field Hands-On: Three Real-World Dialogues That Show the Switch in Action …