Burkov Reorders ChapterPal's Model Fallback Chain, Crowns GPT-6 Luna Best Value

burkov · x · 2026-09-30

Andriy Burkov, author of The Hundred-Page Machine Learning Book, shared a practical tweak to ChapterPal's multi-model fallback chain: he moved GPT-6 Luna to the front, ahead of Gemini 3.8 Flash, GLM 5.3 Flash, and DeepSeek 4.1 Flash. His verdict: "such quality for such a price; it's the best model for the money." The post is also a glimpse into a common cost-control pattern for agent products — cascading cheap models in priority order and falling back as needed.

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