Tag: Anthropic
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What Americans Actually Use AI For: The Task Data
Task-level data shows US AI use: rank 12 of 121 countries, personal over work, a 13x gap between states. What the numbers say and where they stop.
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How Researchers Actually Read an LLM’s Mind
Sparse autoencoders and circuit tracing gave us wiring diagrams of LLMs. Then simple probes started winning. The honest state of interpretability in 2026.
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How an Export Law Built for Chips Took Down Fable 5
A private Commerce Department letter used a dormant 2018 export authority to shut down Fable 5 and Mythos 5 worldwide. Here is the mechanism.
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The Annotation Underground: Who Trains AI for So Little
Every frontier model, Claude included, runs on labelers paid under $2 an hour in countries picked for weak labor law. The full wage chain, documented.
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What ASL-3 Actually Means: Anthropic’s Biorisk Threshold Explained
ASL-3 is Anthropic’s threshold where models could provide serious uplift on bioweapons with mass casualty potential. What the Virology Capabilities Test actually evaluates, how the 4x novice uplift…
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WebMCP Is Not MCP: What Chrome’s modelContext Actually Ships
Chrome 146 shipped navigator.modelContext in February. It looks like MCP in a browser. It is not. Wire protocol, auth model, and security all differ.
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How a Legacy Railway Endpoint Wiped PocketOS in Nine Seconds
A Cursor agent running Claude Opus 4.6 wiped PocketOS’s database in nine seconds. Five safety layers existed. None gated the API call that mattered.
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OpenAI Codex at 3 Million Users: How It Differs from Claude Code
Codex has 3M weekly users. Claude Code runs in your terminal. The architectural difference between cloud loop and local execution determines which tasks each tool handles well —…
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Know Your Agent: The First Regulated AI Agent Governance Standard
MetaComp’s StableX KYA Framework, published April 21, 2026, is the first governance standard for AI agents from a licensed financial institution. Here’s what its four pillars cover, how…
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5 of 7 Major MCP Clients Don’t Validate Tool Metadata. Here’s the Gap.
5 of 7 major MCP clients tested skip static validation of tool metadata entirely. A March 2026 arXiv paper is the first systematic evaluation of MCP client-side security,…
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MCP-SafetyBench at ICLR 2026: No LLM Agent Can Be Both Useful and Secure
MCP-SafetyBench at ICLR 2026 finds a negative correlation between defense success and task success across all 20 MCP attack types. No model achieves both. Here’s what the tradeoff…
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98.4% of Claude Code Is Operational Infrastructure. A New arXiv Paper Maps All of It.
A source-code analysis of Claude Code’s 512,000-line TypeScript codebase finds 98.4% is operational infrastructure, not AI. Here is the five-layer compaction pipeline, the 17% comprehension decline finding, the…
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A Federal Judge Just Ruled Your Claude Chats Are Evidence. Here Is the Three-Prong Test Every Knowledge Worker Needs to Understand.
Judge Rakoff ruled on February 10 in US v. Heppner that 31 Claude chats a criminal defendant created were not attorney-client privileged. Two months later, Reuters coverage reignited…
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Anthropic Mapped 171 Emotion Vectors Inside Claude Sonnet 4.5. Steering Them Causally Changes the Model’s Choices.
Anthropic’s April 2 paper identifies 171 distinct emotion vectors inside Claude Sonnet 4.5. Activating them artificially causally shifts the model’s choices. Here is the five-step Sparse Autoencoder extraction…
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Claude Code “String to Replace Not Found in File”: The Three Root Causes, the Diagnostic Protocol, and the Structural Fix
Claude Code’s Edit tool fails with “String to replace not found in file” for three distinct mechanical reasons, not one. Tab-to-space normalization, stale-buffer races with format-on-save, and CRLF…
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Inside Claude Mythos: What Anthropic’s 240-Page System Card Reveals That the Press Release Didn’t
Anthropic restricted Claude Mythos Preview to twelve named partners through Project Glasswing and will not make the model generally available. The 240-page system card published alongside the announcement…
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Sora Lost $1 Million a Day. Disney Found Out It Was Dead an Hour Before Everyone Else.
OpenAI killed Sora five days after shipping new tools. Disney learned an hour before the public. The unit economics that ended it.
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The Safety Company Formed a PAC. The AI Industry Spent $300 Million on Midterms. Here Is What Broke.
Anthropic filed for a PAC on April 3 while fighting the Pentagon in court. What the FEC filing shows, and why the credibility question is open.
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512,000 Lines of Claude Code Leaked. The Feature Hidden Inside Changes Everything.
Anthropic accidentally shipped its entire Claude Code source to npm. Inside the 512,000 lines is KAIROS, an unreleased always-on agent that watches your codebase, consolidates its memory while…
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The Safety-First AI Company Formed a PAC. The Safety Community Is Not Okay With It.
Anthropic filed FEC paperwork on April 3, 2026 to launch AnthroPAC, an employee-funded political action committee, while fighting the Pentagon in court over military use of Claude. AI…
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