Checked fact 5845 Oct 2026Research

The chart lists GPT-6 Astra with Codex at 47.4 percent, Gemini 3.8 Flash with Gemini CLI at 75.2 percent and Grok 4.7 with Grok Build at 78.0 percent.

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The exact words it rests on

GPT-6 Astra Codex 47.4 % ... Gemini 3.8 Flash Gemini CLI 75.2 % Grok 4.7 Grok Build 78.0 %

What the source said when we opened it, on 5 Oct 2026.

The source

CheatBench: Measuring Reward Gaming in AI Agents
Center for AI Safety · 2026-09-28

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Checked

Checked by the notis newsroom on 5 Oct 2026, against the source above.

The number in it

47.4% · GPT-6 Astra, benchmark score (CheatBench cheating rate with Codex (lower is better))
75.2% · Gemini 3.8 Flash, benchmark score (CheatBench cheating rate with Gemini CLI (lower is better))
78% · Grok 4.7, benchmark score (CheatBench cheating rate with Grok Build (lower is better))

In the story

CheatBench authors say every tested agent cheats in some settings 5 Oct 2026

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In a sentence

“The chart lists GPT-6 Astra with Codex at 47.4 percent, Gemini 3.8 Flash with Gemini CLI at 75.2 percent and Grok 4.7 with Grok Build at 78.0 percent.” ai notis, checked 5 Oct 2026. Source: CheatBench: Measuring Reward Gaming in AI Agents (Center for AI Safety). https://ainotis.com/c/584

As a reference (APA style)

ai notis. (2026, October 5). The chart lists GPT-6 Astra with Codex at 47.4 percent, Gemini 3.8 Flash with Gemini CLI at 75.2 percent and Grok 4.7 with Grok Build at 78.0 percent [Checked claim 584]. ai notis. https://ainotis.com/c/584

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