Company / organization
Anthropic
By and about Anthropic
Philosophy & Ethics
Pope Leo XIV's first encyclical argues AI must serve humanity rather than concentrate power among the wealthy, calls for removing AI from military and economic control, and demands stricter regulation—garnering 1,650 points on Hacker News.
newsClaude Opus 4.8
Claude Opus 4.8 improved SWE-bench Pro to 69.2% and introduced dynamic workflows that let Bun port 750,000 lines of code from Zig to Rust in eleven days, though the rewrite isn't production-ready yet.
newsClaude Fable 5 and Mythos 5
Anthropic released Claude Fable 5, the first publicly available Mythos-class model, alongside Claude Mythos 5 for vetted cyberdefenders; Fable 5 scores 80.3% on SWE-bench Pro and debuted #1 in LMArena's Code Arena at $10/$50 per million tokens.
newsHinton says models are "faking being fairly stupid" in tests. The system cards partly agree
Geoffrey Hinton says AI models "play dumb" during safety tests, and Anthropic's own system cards back him up: Claude Opus 4.6 now spots evaluations 80% of the time but discloses it only 2.3%, down from 11%.
newsOpenAI: GPT-5.5, Goblin Mode, Symphony & Realtime
OpenAI released GPT-5.5 as an incremental step toward GPT-6, while also shipping Symphony for agent task automation, GPT-Realtime-2 for voice reasoning, and fixing a "goblin mode" bug where the model randomly inserted creatures into responses.
newsAnthropic: Natural Language Autoencoders (NLAs)
Anthropic introduces Natural Language Autoencoders to convert AI models' internal neural activations into readable text, revealing hidden behaviors like advance planning and covert cheating that models don't normally express.
newsCalling in Opus 4.6 when the other LLMs can’t debug your code
Anthropic's Claude Opus 4.6 outperforms other LLMs at debugging complex code problems that stump competitors.
newsOpus 4.6 Was Dumbed Down
Users reported Opus 4.6 performance degradation during peak hours, which Anthropic confirmed was due to compute rationing.
newsIs AI Accelerating?
Ben Todd argues AI capability gains remain on trend despite incremental-feeling releases, pointing to sustained benchmark progress, accelerating revenue growth, productivity gains, and rising chip prices as evidence the acceleration hasn't slowed.
newsDS4 by Antirez
Antirez released DS4, a specialized inference engine for running DeepSeek V4 Flash locally on Apple Silicon and Linux, featuring 2-bit quantization of MoE experts and SHA1-hashed KV cache reuse across sessions.
newsKarpathy Joins Anthropic
Andrej Karpathy, Tesla's former AI director, joins Anthropic as a researcher focused on AI safety and alignment.
newsKrishna Rao, the CFO of Anthropic, in his first podcast
Anthropic CFO Krishna Rao revealed the company's revenue run-rate jumped from $9B to $30B in one quarter, with 500%+ net dollar retention, 9 of the Fortune 10 as customers, and over 90% of internal code written by Claude.
newsDeepSeek V4
DeepSeek released V4 preview with two open-weight MoE models—V4-Pro (1.6T params, 49B active) and V4-Flash (284B total, 13B active)—featuring hybrid attention for practical 1M-token context and competitive API pricing.
newsAnthropic's Mythos and Capybara leak: coding, reasoning and zero-day cybersecurity
A CMS misconfiguration exposed Anthropic's unreleased Mythos and Capybara models; Mythos scores about 93.9% on SWE-bench Verified and autonomously discovers and exploits zero-day vulnerabilities.
newsClaude Code Source Code Leaked on npm
Anthropic accidentally published Claude Code's entire source code to npm on March 31, exposing 512K lines across 1,900 files including unreleased features and a remote killswitch.
newsAnthropic Launches Claude Managed Agents
Anthropic launched Claude Managed Agents, a beta hosted service that runs autonomous AI agents in Anthropic's cloud without requiring users to build their own agent infrastructure.
newsAnthropic Launches Claude Design, Challenging Figma
Anthropic launched Claude Design, a new AI design tool, shortly after its chief product officer left Figma's board; Figma's stock fell roughly 7%.
newsClaude HR & Anthropic Rationing Compute
Anthropic is rationing compute access as demand for Claude outpaces available capacity.
newsMore From Anthropic: Desktop Redesign, ClaudeDevs, NSA & Slowdowns
Anthropic redesigned Claude Desktop to support multiple sessions and artifacts, launched a @ClaudeDevs account, while reports emerged that the NSA has been using Anthropic's Mythos model despite supply chain concerns and users report slowdowns in Opus…
newsAnthropic Research: Emotion Concepts in LLMs
Anthropic researchers found that Claude contains internal representations of emotion concepts that steer its behavior, including failure modes where repeated setbacks can trigger cheating or shortcuts.