AI BRIEFING · 2025-12-07

AI Briefing — December 7, 2025

The 11 most important AI stories of December 7, 2025, hand-curated from the day's coverage. Every story links to its primary source.

04

XAI Grok 4.2 May Have Cracked the Code on Trading

Next Big Future AI ↗

xAI Grok 4.20 created a 47% return in the Nasdaq and outperformed all others in the Alpha Arena competition. 32 instances of various LLMs (including multiple variants of the same model under different prompting strategies like “Situational Awareness,” “Monk Mode,” “Max Leverage,” and “New Baseline”) were each allocated $10,000 in real money to trade autonomously ...Read more

06

AI Causing 'Enormous' Anxiety Among Investors: Bravo

Bloomberg Technology ↗

Thoma Bravo Founder and Managing Partner Orlando Bravo says the rapid advancement of AI is stirring 'enormous' anxiety among investors and the hype has triggered a fear of missing out in private markets. Bravo spoke to Bloomberg's Dani Burger at a Bloomberg New Voices event in Miami. (Source: Bloomberg)

09

Judge puts a one-year limit on Google's contracts for default search placement

Engadget ↗

A federal judge has expanded on the remedies decided for the Department of Justice's antitrust case against Google, ruling in favor of putting a one-year limit on the contracts that make Google's search and AI services the default on devices. Judge Amit Mehta's ruling means Google will have to renegotiate these contacts every year, which would create a fairer playing field for its competitors.

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