Decoding Gemma 4's Thinking Mode: Unlocking the Power of `<|think|>`

This is a submission for the Gemma 4 Challenge: Write About Gemma 4 Gemma 4 ships with built-in reasoning — a configurable chain-of-thought that runs before the model gives you an answer. It's not a separate model, not a system prompt trick, and not a post-processing layer. It's a control token trai