Runway is doing some very cool stuff using CoPE/Zentropi: "We have designed and tested a new fast moderation system that will run synchronously once a user’s input clears moderation.... The synchronous moderation through Zentropi narrows the exposure window to less than half a second."

Runway News | Moderation in Real Time

Runway built a synchronous moderation system for real-time video generation to scan streaming frames for harmful content in under half a second — layered on Runway's existing safety defenses.

runway.com

The safety team at RunwayML has been doing some of the most innovative work in the industry. It's exciting to see how they use Zentropi to ensure the safety of their videos in real-time **as they are being generated**. Details on their blog: runway.com/news/safety/...

Runway News | Moderation in Real Time

Runway built a synchronous moderation system for real-time video generation to scan streaming frames for harmful content in under half a second — layered on Runway's existing safety defenses.

runway.com

this is basically what i text @dwillner.bsky.social every morning

Casey Newton@caseynewton.bsky.social · 4w ago

it's about fucking time that someone inverted the binocular labeling approach

At TrustCon this year I talked about a technique we’ve developed for automatically optimizing content-moderation policies, using an inversion of the binocular labeling approach Zentropi had already pioneered. Today we're shipping the tool that technique became. blog.zentropi.ai/optimizing-o...

Optimizing our Policy Optimizers

Today, we are releasing our next-generation policy refinement tools: policy-only correction, label-only correction, and auto-optimization.

blog.zentropi.ai

Today we are releasing the next generation of our policy optimization tools for content classifiers. It is our hope this can be another step towards helping shore up human control over AI-powered systems. blog.zentropi.ai/optimizing-o...

Optimizing our Policy Optimizers

Today, we are releasing our next-generation policy refinement tools: policy-only correction, label-only correction, and auto-optimization.

blog.zentropi.ai

The divide in America used to be rural vs urban. Then red states vs blue states. But now I think the real emerging gap is between W-2 Americans and 1099-DIV Americans.

ICYMI

Dave Willner@dwillner.bsky.social · last mo.

I gave a talk at TrustCon this year that seemed well received, so we have written the argument up as a post on the Zentropi blog and are sharing the slides with it: blog.zentropi.ai/machines-edi... 🧵 1/5

As usual, @masnick.com is spot on here: www.techdirt.com/2026/08/26/m... Nothing says "regulatory capture" more than making a payment to the government contingent upon them enforcing certain rules of your choice on your competitors.

Meta Just Paid Nearly $17 Billion To Make Sure It Gets To Write The Kid Safety Rules For Every Other Social Media Platform

By now you've almost certainly heard the news that Meta has settled with 52 state and local Attorneys General who had sued the company in some form or another over child safety on Meta's platforms. The headlines are all covering the basics: the years-long case these states filed against Meta ends, and Meta pays somewhere...

techdirt.com

The $12.7B in damages Meta will be paying to the states for harming children is less than... 1. How much it paid ScaleAI for Alexandr Wang ($14.3B) 2. Its one-day market cap increase upon launch of Muse Spark ($94.9B) 3. How much it burned on the Metaverse/VR in 2025 ($19.1B)

Banning all teens from social media hasn't ever seemed like a great idea to me. A much healthier approach is for platforms to build smoother on-ramps for teens that are developmentally appropriate for each child's age. 🧵 [1/n]...

I continue to be impressed with Zentropi. My first thought is that they were a replcement for Perspective API that Jigsaw was ending. And yes, but so much more. So far they can answer virtually any question about a text of almost any size my work cares about that CAN be answered with a Yes or a No.

Samidh@samidh.bsky.social · 4mo ago

Today, in a single day, @dwillner.bsky.social and I had meetings with people in England, Turkey, NYC, SF, Argentina, and Australia. Very inspiring to see four continents of folks all using Zentropi and united in the earnest work of building a better internet.

The real question is whether these classifiers can find all the dogs that Dave has at home.

Dave Willner@dwillner.bsky.social · 4mo ago

Zentropi can now label video, not just text and images. You simply write a policy in plain language and the model applies it to clips up to 60 seconds. Our optimizers also work with video, taking your initial policy and dialing it in on your data. Check it out! blog.zentropi.ai/zentropi-now...

I distinctly remember being at Meta in the wake of the Christchurch massacre, when horrific videos were circulating across Facebook without end. The technologies we had for being able to accurately classify videos just didn't exist. [1/n]

Today we're releasing Coop 1.0, the world's first free, open source content review & enforcement system any org can self-host and build on. For the first time, any org, whatever its size or budget, can review, act on, and report CSAM end to end, for free. roost.tools/blog/coop-1-...

Coop 1.0: World’s First Free, Open Source Child Safety Infrastructure for Every Platform

Robust Open Online Safety Tools or ROOST is a new non-profit entity designed to address the urgent need for accessible, high-quality safety tools in the rapidly evolving digital landscape.

roost.tools

Today, in a single day, @dwillner.bsky.social and I had meetings with people in England, Turkey, NYC, SF, Argentina, and Australia. Very inspiring to see four continents of folks all using Zentropi and united in the earnest work of building a better internet.

Can your LLM actually follow your content policies, or will it just revert to its own static training? Today we're introducing a new benchmark that we call policy steerability that tries to measure this concept: blog.zentropi.ai/introducing-...

Beyond Static Accuracy: Introducing the Policy Steerability Benchmark

A new way to measure how likely a model is to accurately follow your rules

blog.zentropi.ai

Very cool! @julietshen.bsky.social's independent tests show that our new model CoPE-B cooks :-) Direct link to her results: github.com/julietshen/c...

Juliet Shen@julietshen.online · 5mo ago

I am NOT an AI engineer or AI researcher, but I tried to do a little evaluation of CoPE-B vs CoPE-A vs gpt-oss-safeguard github.com/roostorg/mod... lmk what you think, and we'd love for more evaluations to be part of the ROOST Model Community! cc @samidh.bsky.social

The ROOST Model Community is growing! Today we welcome Zentropi's CoPE-B-A4B, a bring-your-own-policy model that's got the power of 25B but runs on only 4B active parameters. It's a fast, low-cost model that can be used on its own or as a first pass before larger models! roost.tools/blog/welcomi...

Welcoming Zentropi's CoPE-B-A4B to the ROOST Model Community

Robust Open Online Safety Tools or ROOST is a new non-profit entity designed to address the urgent need for accessible, high-quality safety tools in the rapidly evolving digital landscape.

roost.tools

New in the ROOST Model Community: zentropi.ai 's CoPE-B-A4B is here. roost.tools/blog/welcomi...

Welcoming Zentropi's CoPE-B-A4B to the ROOST Model Community

Robust Open Online Safety Tools or ROOST is a new non-profit entity designed to address the urgent need for accessible, high-quality safety tools in the rapidly evolving digital landscape.

roost.tools

a few use cases I can think of for CoPE-B (and BYOP models): if you're a platform that's ok with NSFW role play but not age play, you can create a custom CoPE model that looks just for that. Many free text classifiers come with baked-in ideas of morality that might not fit your community

Dave Willner@dwillner.bsky.social · 5mo ago

We're releasing CoPE-B in collaboration with @roost.tools and will support it through the ROOST Model Community. It's a great forum for advancing AI-powered trust & safety tooling and we're excited to be a part of it. We'll be active there if you're building with CoPE-B and have questions! 🧵 9/9

Exactly right. Speech shouldn't be ruled by the platform hegemons. Your rules should rule.

Mike Masnick@masnick.com · 5mo ago

For anyone in the trust and safety space this is big. A powerful, but small, *open source* classifier not weighed down by what some giant AI company decides you must want in your classifier ...

We are THRILLED to announce that @roost.tools is jointly releasing CoPE-B with the Zentropi team. We believe that everyone should have access to openly licensed models designed for safety use cases that can be tuned to their community's norms. Join us at RMC office hours next week to learn more!

Dave Willner@dwillner.bsky.social · 5mo ago

We're releasing CoPE-B in collaboration with @roost.tools and will support it through the ROOST Model Community. It's a great forum for advancing AI-powered trust & safety tooling and we're excited to be a part of it. We'll be active there if you're building with CoPE-B and have questions! 🧵 9/9

Super pumped to release CoPE-B, our latest policy-adaptive content classification model. It delivers frontier-level accuracy in a self-hostable package that's orders of magnitude cheaper to run-- opening up new possibilities in trustworthy platform design. Details: blog.zentropi.ai/meet-cope-b-...

Meet CoPE-B: Frontier-Quality Content Classification You Can Self-Host

TL;DR: * Today we're releasing CoPE-B, our next-gen small language model for policy-adaptive content classification * CoPE-B-A4B (text-only) is open weights under Apache 2.0 and free to use * CoPE...

blog.zentropi.ai

@samidh.bsky.social and I are releasing CoPE-B today, the next version of our policy-adaptive content classifier. It delivers at-or-better-than-frontier classification while being self-hostable, faster, and cheaper to run. Full writeup with benchmarks at blog.zentropi.ai/meet-cope-b-.... 🧵 1/9

Meet CoPE-B: Frontier-Quality Content Classification You Can Self-Host

TL;DR: * Today we're releasing CoPE-B, our next-gen small language model for policy-adaptive content classification * CoPE-B-A4B (text-only) is open weights under Apache 2.0 and free to use * CoPE...

blog.zentropi.ai

Very excited to have this public. The @oversightboard.bsky.social's use of Zentropi to study child marriage content on Meta platforms was very cool to support: blog.zentropi.ai/how-the-over...

How the Oversight Board uses Zentropi to study policy impact at scale

The Oversight Board used Zentropi to analyze a large dataset of content that potentially violated Meta’s policies on human exploitation. The tool helped the Board reduce the project timeline from week...

blog.zentropi.ai

Check out how the @oversightboard.bsky.social used Zentropi to better understand how child marriage-related content manifests on Meta's platforms. Fantastic example of how advanced content labeling technologies can strengthen both our online and offline world. blog.zentropi.ai/how-the-over...

How the Oversight Board uses Zentropi to study policy impact at scale

The Oversight Board used Zentropi to analyze a large dataset of content that potentially violated Meta’s policies on human exploitation. The tool helped the Board reduce the project timeline from week...

blog.zentropi.ai

It has been incredible partnering with character.ai since the very start of zentropi.ai. We're excited to share some details of that partnership with this case study. Anyone creating AI-powered systems might find it interesting! blog.zentropi.ai/how-zentropi...

How Zentropi partners with Character.ai

Character.ai takes safety seriously. With millions of users creating and chatting with AI characters every day, the team invests heavily in systems that help protect their community — and they're alwa...

blog.zentropi.ai

In 2017, it took us months to define “political ad” at Facebook. Recently, I built two political content classifiers in an afternoon using Zentropi AI created by @dwillner.bsky.social and @samidh.bsky.social Why AI content moderation is good, actually — in this week’s newsletter 👇

Why AI Makes Content Moderation Better, Not Worse

Building a political content labeler with AI — what actually works

open.substack.com

One of the things we've been thinking about a lot at Zentropi is: what happens when AI agents need to make judgment calls about content — not humans reviewing a queue, but agents acting autonomously?