Enhancement: Show Reasoning (Thinking) for Gemini models

[KiGamji]

What features would you like to see added?

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Which components are impacted by your request?

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[watzon]

This would be nice to have for R1 as well. Just a toggle for "Show thinking" would be fantastic.

[insilications]

"By default, the Gemini API doesn't return thoughts in the response. To include thoughts in the response, you must set the include_thoughts field to true, as shown in the examples."

https://ai.google.dev/gemini-api/docs/thinking

[GTP95]

About Deepseek R1: I'm using it via OpenRouter. The interface has a button to show the thinking, but it disappears as soon as the model writes the final answer. It would be nice to have the possibility to leave the thinking visible.
Edit: It actually happened only for the first message in the chat, continuing the conversation it is now leaving the thinking process displayed on the page. Is this a known bug or should I open a separate issue?

[danny-avila]

I was looking to implement this, but it's not working at all on Google's end.

If you try this google colab, it will not output thoughts: https://colab.research.google.com/github/GoogleCloudPlatform/generative-ai/blob/main/gemini/getting-started/intro_gemini_2_0_flash_thinking_mode.ipynb#scrollTo=sG3_LKsWSD3A

[watzon]

Afaik Google doesn't expose the thinking via the API as of yet. It's only available in AI Studio.

[danny-avila]

they did at one point and then stopped, they even added a parameter to specify whether reasoning tokens should be included in the generation.