AI Briefing — Saturday, June 20, 2026

Signal’s Meredith Whittaker wants you to remember that AI chatbots ‘are not your friends’

"These are not your friends. These are not conscious beings. These are not sentient interlocutors.”

In the Weights is your new AI-centric vanity search

So ... what's your In the Weights score?

PostgresBench: A Reproducible Benchmark for Postgres Services

Nobel laureate John Jumper is leaving DeepMind for rival Anthropic

Jumper isn't the only big name leaving Google DeepMind.

Show HN: We post-trained a model that pen tests instead of refusing

Anthropic and OpenAI's publicly available models are explicitly guard-railed so that they refuse offensive tasks. And their cyber-focussed models are gated for enterprises. This leaves SMEs and mid m…

Temporary Cloudflare accounts for AI agents

From PGP to Mythos: a brief history of export controls that didn’t stop anyone

For the last 30 years, stopping the flow of cybersecurity-related software has proven to be ineffective. It's unclear why it would work now with Anthropic’s cybersecurity model Mythos.

Is the US government’s Anthropic ban accidentally helping the brand?

Just as last week was ending, the US government forced Anthropic to pull its two newest models, Fable 5 and Mythos 5, citing national security concerns after Amazon researchers allegedly found a way to bypass Fable 5’s…

The US banned Anthropic’s Fable 5 release, but the numbers don’t seem to care

Just as last week was ending, the US government forced Anthropic to pull its two newest models, Fable 5 and Mythos 5, citing national security concerns after Amazon researchers allegedly found a way to bypass Fable 5’s…

Billionaire Ambani wants AI in every call, app, and home

Reliance is weaving AI into telecom services used by more than 500 million people.

MosaicLeaks: Can your research agent keep a secret?

Beyond LoRA: Can you beat the most popular fine-tuning technique?

Is it agentic enough? Benchmarking open models on your own tooling

MolmoMotion: Language-guided 3D motion forecasting

From the Hugging Face Hub to robot hardware with Strands Agents and LeRobot

JanusMesh: Fast and Zero-Shot 3D Visual Illusion Generation via Cross-Space Denoising

Creating 3D visual illusions, a single 3D mesh that reveals entirely different semantics from various viewing angles, is a fascinating but tough challenge. Existing optimization-based methods are slow and can produce ov…