Simon WillisonAnthropicTuesday, April 14, 2026

Cybersecurity Looks Like Proof of Work Now

Cybersecurity Looks Like Proof of Work Now The UK's AI Safety Institute recently published Our evaluation of Claude Mythos Preview’s cyber capabilities, their own independent analysis of Claude Mythos which backs up Anthropic's claims that it is exceptionally effective at identifying security...

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The Register6h ago

Anthropic's Project Glasswing CVE tally is still anyone's guess

Anthropic

Like the majority of the companies participating, it remains a mystery Last week, Anthropic surprised the world by declaring that its latest model, Mythos, is so good at finding vulns that it would create chaos if released. Now, under the title of Project Glasswing, over 50 selected companies and...

TechCrunch1 day ago

Anthropic co-founder confirms the company briefed the Trump administration on Mythos

Anthropic

Anthropic co-founder Jack Clark disclosed at the Semafor World Economy summit that the company briefed the Trump administration on Mythos, an internal AI safety research project. Clark explained the company's rationale for maintaining government engagement despite simultaneously pursuing legal action against federal agencies, indicating that dialogue with policymakers remains a priority for the AI safety-focused organization.

The Register1 day ago

Claude Code routines promise mildly clever cron jobs

Anthropic

Plus Anthropic has redesigned its Claude app Anthropic has made it easier to automate Claude-oriented tasks without relying on autonomous agent software.…

The Register2 days ago

Claude Code cache confusion as Anthropic tweaks defaults, but quotas still drain

Anthropic

Anthropic recently reduced the time-to-live (TTL) for its Claude Code prompt cache feature from one hour to five minutes for many requests, a technical adjustment that the company claimed would not increase costs for users. However, developers are reporting that their usage quotas are depleting significantly faster during extended work sessions, contradicting Anthropic's assurances and suggesting the change may have unintended consequences.

The Register2 days ago

Claude is getting worse, according to Claude

Anthropic

Anthropic's Claude, once celebrated by programmers as a leading AI assistant, has faced growing quality complaints alongside recent service disruptions. The AI experienced a significant outage on Monday, adding to mounting concerns about both its performance and reliability. These issues are particularly notable given Claude's previous reputation as a preferred tool among developers.