Mythos is very powerful, and should feel terrifying. I am proud of our approach to responsibly preview it with cyber defenders, rather than generally releasing it into the wild. Model card here: https://
www-cdn.anthropic.com/53566bf5440a10
affd749724787c8913a2ae0841.pdf
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LLMS
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Mythos Model: Powerful AI Preview with Cyber Defenders
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Stanford Seminar: How People Use ChatGPT with Zoë Hitzig
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Here's a terrific seminar by @zhitzig at the Stanford @DigEconLab Stanford Digital Economy Lab (@DigEconLab) For those that missed Zoë Hitzig's visit to our Seminar Series, it's now available on YouTube! Watch "How People Use ChatGPT," moderated by Director @erikbryn, here: piped.video/czrKIiuHZ-U — https://nitter.net/DigEconLab/status/2041601680345854260#m
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Claude Mythos costs 5 times more than Claude Opus 4.6
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Claude Mythos is 5x as expensive as Claude Opus 4.6 Honestly, when I looked at the benchmarks, I expected much higher costs. AiBattle (@AiBattle_) Claude Mythos Preview is 5x as expensive as Claude Opus 4.6 — https://nitter.net/AiBattle_/status/2041592758729654284#m [Translated from EN to English]
→ View original post on X — @kimmonismus, 2026-04-07 19:43 UTC
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Anthropic’s Mythos Model: Power Without Public Access
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Good news: Anthropic just revealed Mythos- the most powerful AI model ever made Bad news: you'll never be able to use it I get it. It's so powerful that it could exploit cybersecurity But I hate it. I don't love that a company gets to hand select who gets to use the best intelligence. The companies who get access to Mythos will have a distinct economic advantage against those that don't That feels unfair I'm more of a fan of democratization of intelligence. This feels like an opportunity for OpenAI to release something as powerful but put it in the hands of consumers. Trust the consumer by default. Sort of like with the OpenClaw situation Another reason to root for open source Anthropic (@AnthropicAI) 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 — https://nitter.net/AnthropicAI/status/2041578392852517128#m
→ View original post on X — @ceobillionaire, 2026-04-07 19:40 UTC
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Technical analysis of Claude model behavior and personality traits
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SuperClaude (Mythos) still seems irreducibly Claude-y given the transcripts in the system card. Here two versions of Mythos are forced to talk to each other across multiple rounds. They are less philosophical than Opus 4.6 or spiritual than Opus 4.1, but still very Claude-like.
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Claude Mythos Preview: Anthropic’s Most Powerful Unreleased AI Model
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A first look at Claude Mythos Preview, the model initially described in a leaked Anthropic draft as "by far the most powerful AI model we've ever developed."
— The Rundown AI (@TheRundownAI) 7 avril 2026
So powerful, it's not getting released to the public.
The model will power Project Glasswing, an initiative with 12… pic.twitter.com/YPwqlMQrtXA first look at Claude Mythos Preview, the model initially described in a leaked Anthropic draft as "by far the most powerful AI model we've ever developed." So powerful, it's not getting released to the public. The model will power Project Glasswing, an initiative with 12
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Gemini 3 Flash and GPT-5.4 mini now available
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Now available in addition to Gemini 3 Flash and GPT-5.4 mini. Check out alphaxiv.org!
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GLM-5.1 Advanced Research Paper Analysis with AI Understanding
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Introducing GLM-5.1 for understanding research papers 🚀
— alphaXiv (@askalphaxiv) 7 avril 2026
Highlight any section of a paper to ask questions and “@” other papers for quick context, comparisons, and benchmark references pic.twitter.com/N0tlqKZuShIntroducing GLM-5.1 for understanding research papers 🚀 Highlight any section of a paper to ask questions and “@” other papers for quick context, comparisons, and benchmark references
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How to Build AI Agents by Krishna Agrawal
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How to Build #AIAgents by @Krishnasagrawal #GenAI #LLM #ArtificialIntelligence #MachineLearning #ML
→ View original post on X — @ronald_vanloon, 2026-04-07 19:23 UTC
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Mythos Model Card: 244 Pages of Detailed AI Documentation
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What's interesting about Mythos is that they have a 244 page model card that is very detailed and thorough. Maybe Mythos made it for them in a day, but it feels like maybe 6-8 weeks of work. So it was probably ready for c.2 months. Wonder if they used it for coding already.