AI Daily Brief — 28 December 2025
Sunday closed pre-Year-End cycle on retrospective + safety notes. OpenAI posts opening for new Head of Preparedness — executive role leading Preparedness team studying frontier-AI risks. CEO Sam Altman cited models “starting to present some real challenges,” specifically mental-health impacts and models “so good at computer security they are beginning to find critical vulnerabilities.” Euronews year-end essay: “2025 was the year AI slop went mainstream” — AI-generated low-quality content saturated feeds in 2025; mentions of “AI slop” across the internet rose 9× vs 2024, with negative sentiment peaking at 54% in October. Framed as the dominant 2025 culture story. NPR Weekend Edition Sunday: “The year in AI and culture” recapping AI/culture in 2025 — AI actress Tilly Norwood + music-label deals (UMG + Udio plan joint subscription service for 2026) + Disney’s $1B investment into OpenAI cited as marker events.
Top stories
- OpenAI posts opening for new Head of Preparedness. Altman cites “real challenges”: mental-health impacts + models “so good at computer security they are beginning to find critical vulnerabilities.” via TechCrunch
- Euronews: 2025 was year “AI slop went mainstream”. “AI slop” mentions across internet rose 9× vs 2024; negative sentiment peaked 54% October. Framed as dominant 2025 culture story. via Euronews
- NPR Weekend Edition: “The year in AI and culture”. Tilly Norwood + UMG-Udio joint subscription for 2026 + Disney $1B OpenAI cited as marker events. via NPR
Who shipped
Nobody. OpenAI shipped a hiring page. Anthropic, Google, Meta, xAI, DeepSeek, Alibaba all dark.
Open-source pulse
No new drops. Chinese open-weight wave from Friday continues community uptake.
Money, infra & hardware
No new rounds. Year-end retrospective cycle dominates feeds.
Quiet corners
Altman’s “models finding critical vulnerabilities” framing is the substantive safety moment — first frontier-lab CEO explicit acknowledgment that current models can discover security vulnerabilities at consequential scale.
By the numbers
- 0 — frontier-lab launches Sunday
- 9× / 54% — “AI slop” mentions YoY growth / peak negative sentiment October
- Most-mentioned topic: year-in-review + AI safety hiring
- Quietest segment: everything
Compiled by AI Feed’s editor from verified web sources for 28 December 2025.