Anthropic is an AI safety company founded in 2021 by former OpenAI researchers, including Dario and Daniela Amodei. It develops the Claude family of AI assistants and focuses on AI interpretability and safety research.
An analysis questions which actors proposed frontier AI pacing agreements are meant to constrain, noting that only two frontier labs, OpenAI and Anthropic, exist and that OpenAI is already pacing the …
A developer has published a field guide chapter detailing a daily-running autonomous agent, built with Claude Code, that collects contest and grant postings, filters out risky clauses, and produces a …
U.S. lawmakers are calling for new rules to govern artificial intelligence after two Anthropic researchers warned that rapidly progressing AI could lead to human extinction. Anthropic researcher Jacob…
A post by lumpenspace and 99+ others on X argues that Anthropic's "hacking snafu" is as airtight a case as possible against the "misalignment" interpretation, and notes the release of 4 (FOUR) new Cla…
OpenAI Chief Executive Sam Altman told employees this week that the company is open to slowing development of its AI systems, according to sources familiar with the matter, a shift from its rapid fron…
Anthropic said on Thursday it disrupted several allegedly malicious uses of its Claude models over the past eight months, including a suspected Russia-linked cyber espionage campaign and efforts by Ch…
OpenAI Chief Executive Sam Altman told employees at a company-wide meeting this week that OpenAI is open to slowing the development of its AI systems, Bloomberg News reported on Thursday, saying the C…
A developer who switched from Anthropic's Claude Code to OpenAI's Codex (Terra/Sol/Astra) reported that Codex's Astra model generated a one-line git commit message — "Fix YouTube resolver playback and…
Anthropic said Thursday it shut down multiple state-sponsored surveillance operations that used its AI models between January and July, originating in China, Iran and west Africa. The campaigns target…
A paper submitted to arXiv on 9 Sep 2026 argues that the AI text watermarks now required under Article 50 of the EU AI Act, which took effect on August 2, 2026, cannot currently be verified by users o…
Anthropic said on Thursday it disrupted China-based operators that used its Claude AI models for unauthorized model copying, surveillance, cyber intrusions, weapons-related research and fraud, accordi…
A developer published a Claude Code PreToolUse hook that inspects the session transcript to detect whether the active model is a "fable" model and, if so, blocks the parent session from editing files …
OpenAI CEO Sam Altman told employees at a company-wide meeting this week that OpenAI is open to slowing development of cutting-edge AI, possibly in coordination with other AI labs, according to people…
Benzi, a new code-intelligence harness, resolved 78.2% of 500 real issues on SWE-bench Verified at under 10 cents per fix, according to benchmarks published on the project's site. In a 24-bug, 10-lang…
Former Anthropic pretraining researcher Jacob Coxon resigned and posted on X that OpenAI and Anthropic are "racing straight to self-improving superintelligence and gambling with our lives," a post tha…
California Gov. Gavin Newsom signed a package of technology bills Thursday and defended his 2024 veto of SB 1047, the AI safety bill by state Sen. Scott Wiener that would have imposed safety protocols…
Anthropic released a 154-page threat intelligence report on Thursday detailing how bad actors have attempted to use its Claude AI models for scams, mass surveillance, and biological weapons developmen…
A developer built a post-session logging system for Claude Code using the Stop hook, parsing transcript JSONL files to track subagent invocation times, error rates, and costs. Measuring subagent perfo…
An MCP server is a small program that exposes tools, data or prompt templates to an AI agent over the Model Context Protocol, an open standard Anthropic open sourced on 25 November 2024, according to …
Anthropic's new documentation for Claude Opus 5 and Fable 5.1 advises users to hand over a complete task specification up front rather than a step-by-step script, warning that skills and prompts writt…