Comment by iCarrot

You can turn off thinking in Gemini pro models by using completion mode.

Essentially, append a message with role=model and minimal text part, such as a simple "A", at the end of the "contents" array. The model will try to complete the message without using any thought tokens.

You can also set the model message to start with "think" or something along that line and watch it thinks out loud (or melts down with over-thinking and stop due to reaching maximum output token)

``` [ { "parts": [{"text": "hello"}], "role": "user" }, { "parts": [{"text": "*think"}], "role": "model" } ] ```