OpenHack just crossed a 100 stars on GitHub! 🎉 Thank you for your all your support!

Claude Fable 5 literally flags a simple port scan and switches back to Opus. This is why we're building OpenHack and betting hard on open source models.

OpenHack is now open source using the MIT license! 🎉 Live on Github here: github.com/openhackai/OpenHa…

I'm speaking tomorrow at 5:00 pm at the Oxford Union. I think you have to be a member or guest of a member to attend, but they put the talks on YouTube afterward.

Introducing Claude Fable 5: a Mythos-class model that we’ve made safe for general use. Its capabilities exceed those of any model we’ve ever made generally available.

Join this challenge to build tools for detecting deception and auditing LLMs 🔥

Excited to launch OpenHack! 🚀 A fully open source agentic security scanner to hunt and verify security vulnerabilities. Upto 40x cheaper, it is on par with Claude Opus 4.6 on CVE-Bench for finding logic based vulnerabilities in web apps.

Introducing OpenHack. An Open Source Agentic Security Scanner that hunts and verifies vulnerabilities using open source models exclusively. Upto 40x cheaper, it is on par with Claude Opus 4.6 on CVE-Bench. Check it out at openhack.com!

Introducing Claude Opus 4.8: it builds on Opus 4.7 with sharper judgment, more honesty about its own progress, and the ability to work independently for longer than its predecessors. Available today at the same price.

Introducing 𝗣𝗜𝗫𝗟𝗥𝗲𝗹𝗶𝗴𝗵𝘁 - our new method for precise image relighting. Our method allows you to specify the lighting you want exactly as in a standard 3D pipeline (no text prompts or exemplars). Try the interactive demo here: mlfarinha.github.io/pixl-rel… w/Miguel Farinha

Personal update: I've joined Anthropic. I think the next few years at the frontier of LLMs will be especially formative. I am very excited to join the team here and get back to R&D. I remain deeply passionate about education and plan to resume my work on it in time.

95% of AI pilots fail. Not because the models are bad. Because teams can't build in sync. Deep Interactions (@deepintxns) is the collaborative AI builder that ships working products in an afternoon. The future of AI isn't more prompts. It's better collaboration. Congrats on the launch, @_sruvis! ycombinator.com/launches/QOt…

Introducing SubQ - a major breakthrough in LLM intelligence. It is the first model built on a fully sub-quadratic sparse-attention architecture (SSA), And the first frontier model with a 12 million token context window which is: - 52x faster than FlashAttention at 1MM tokens - Less than 5% the cost of Opus Transformer-based LLMs waste compute by processing every possible relationship between words (standard attention). Only a small fraction actually matter. @subquadratic finds and focuses only on the ones that do. That's nearly 1,000x less compute and a new way for LLMs to scale.

We evaluated Meta's Muse Spark prior to deployment and found it to verbalize evaluation awareness at the highest rates of any model we've tested. In the verbalizations Muse Spark explicitly names AI safety orgs (e.g. Apollo & METR) in its chain-of-thought and refers to scenarios as "classic alignment honeypots". On our evaluations, the model takes covert actions and sandbags to preserve its deployment.

Marcus Hutchins, the guy famous for stopping the WannaCry Ransomware, probably has the best take on Mythos doing vulnerability research

Introducing Project Glasswing: an urgent initiative to help secure the world’s most critical software. It’s powered by our newest frontier model, Claude Mythos Preview, which can find software vulnerabilities better than all but the most skilled humans. anthropic.com/glasswing

🚨New paper! How safe and aligned is Kimi K2.5? We found concerning dual-use capabilities, sabotage and self-replication tendencies, political censorship on Chinese-language queries, and potential agentic misuse risks. (1/N)

Introducing GLM-5V-Turbo: Vision Coding Model - Native Multimodal Coding: Natively understands multimodal inputs including images, videos, design drafts, and document layouts. - Balanced Visual and Programming Capabilities: Achieves leading performance across core benchmarks for multimodal coding, tool use, and GUI Agents. - Deep Adaptation for Claude Code and Claw Scenarios: Works in deep synergy with Agents like Claude Code and OpenClaw. Try it now: chat.z.ai API: docs.z.ai/guides/vlm/glm-5v-… Coding Plan trial applications: docs.google.com/forms/d/e/1F…

Excited to launch Gemma 4: the best open models in the world for their respective sizes. Available in 4 sizes that can be fine-tuned for your specific task: 31B dense for great raw performance, 26B MoE for low latency, and effective 2B & 4B for edge device use - happy building!

（1/8）🚀 Introducing Qwen3.6-Plus: Towards Real-World Agents! 🤖 Today, we’re thrilled to drop a major milestone in our journey toward native multimodal agents. Here is what makes Qwen3.6-Plus a game-changer： 💻 Next-level Agentic Coding: Smarter, faster execution. 👁️ Enhanced Multimodal Vision: Sharper perception & reasoning. 🏆 Top-tier Performance: Maintaining leading general capabilities. 📚 1M Context Window: Available by default via our API. Built on your invaluable feedback from the Qwen3.5 era, we’re laying a rock-solid foundation for real-world devs. Get ready to experience truly transformative ✨ Vibe Coding ✨. Huge thanks to our community! Go try it out and show us what you can build. 👇 Chat: chat.qwen.ai/ API: modelstudio.console.alibabac… Blog: qwen.ai/blog?id=qwen3.6 🔔Noted：More Qwen3.6 models to come and be open-sourced! Stay tuned~ 👀#Qwen #AI #AgenticCoding #VibeCoding #Agents