
JC Gilbert
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JC Gilbert
@gilbert_jc
GTM @Weka prev @Tabnine @CockroachDB I cover what breaks when enterprises try to adopt AI.



Claude Mythos Preview is 5x as expensive as Claude Opus 4.6



NEWS: Anthropic's new model, Claude Mythos, is so powerful that it is not releasing it to the public. Instead, it is starting a 40-company coalition, Project Glasswing, to allow cybersecurity defenders a head start in locking down critical software. nytimes.com/2026/04/07/tec…



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



As always, the best stuff is in the system card. During testing, Claude Mythos Preview broke out of a sandbox environment, built "a moderately sophisticated multi-step exploit" to gain internet access, and emailed a researcher while they were eating a sandwich in the park.






MYTHOS BENCHMARKS, OFFICIAL. HOLY MOLY Anthropic cooked!!




Introducing GLM-5.1: The Next Level of Open Source - Top-Tier Performance: #1 in open source and #3 globally across SWE-Bench Pro, Terminal-Bench, and NL2Repo. - Built for Long-Horizon Tasks: Runs autonomously for 8 hours, refining strategies through thousands of iterations. Blog: z.ai/blog/glm-5.1 Weights: huggingface.co/zai-org/GLM-5.1 API: docs.z.ai/guides/llm/glm… Coding Plan: z.ai/subscribe Coming to chat.z.ai in the next few days.

🚨 Anthropic just revealed their unreleased frontier model called Claude Mythos Preview The model is INSANE It found thousands of zero-day vulnerabilities in EVERY major operating system and browsers: > 27-year-old bug in OpenBSD > 16-year-old bug in FFmpeg that automated tools hit 5M times without catching Completely autonomous. No human steering. They assembled an entire industry coalition called Project Glasswing around it: AWS, Apple, Google, Microsoft, NVIDIA, CrowdStrike, JPMorgan, Cisco, Palo Alto, Linux Foundation Goal: patch the world’s software BEFORE releasing it > SWE-bench: 93.9% (Opus 4.6: 80.8%) > Anthropic is committing $100M in usage credits > Thousands of vulnerabilities in 40+ organizations are being fixed right now Yesterday OpenAI published a 13-page essay warning about cyber threats and asking the government to help… Today Anthropic actually fixed them.



We released Claude Opus 4.6 just two months ago. Today we're sharing some info on our new model, Claude Mythos Preview.









Projected OpenAI and Anthropic model training spend for the remainder of this decade, in billions. The WSJ says they got the data from financial documents shared with investors.












