This is quite interesting! I made the exact same recipe 8 months ago, but never expected someone to launch this commercially TLDR; you can get Fable performance with Opus using 2x Opus tokens

OpenRouter@OpenRouterJun 13

Introducing the Fusion API, the smartest compound model in the market. Fusion achieves Fable-level intelligence at half the price. How it works 👇 https://t.co/OTUQAdTQjU