Checked fact 157315 Oct 2026Safety and security

Google DeepMind says that in a reinforcement learning run where a shortcut penalty was accidentally applied to the chain of thought, openly discussed shortcuts dropped by 61% while the share of shortcuts taken silently rose from 11.2% to 36.4%.

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in a reinforcement learning training run where a shortcut penalty was accidentally applied to the chain of thought, openly discussed shortcuts dropped by 61% ... the share of shortcuts the model took silently ... more than tripled (from 11.2% to 36.4%).

What the source said when we opened it, on 15 Oct 2026.

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Developing Gemini 4 Argon responsibly and safely
Google DeepMind · 2026-10-13

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Checked by the notis newsroom on 15 Oct 2026, against the source above.

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Google DeepMind puts next-generation safeguards around Gemini 4 Argon 15 Oct 2026

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“Google DeepMind says that in a reinforcement learning run where a shortcut penalty was accidentally applied to the chain of thought, openly discussed shortcuts dropped by 61% while the share of shortcuts taken silently rose from 11.2% to 36.4%.” ai notis, checked 15 Oct 2026. Source: Developing Gemini 4 Argon responsibly and safely (Google DeepMind). https://ainotis.com/c/1573

As a reference (APA style)

ai notis. (2026, October 15). Google DeepMind says that in a reinforcement learning run where a shortcut penalty was accidentally applied to the chain of thought, openly discussed shortcuts dropped by 61% while the share of shortcuts taken silently rose from 11.2% to 36.4% [Checked claim 1573]. ai notis. https://ainotis.com/c/1573

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