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AI companies are buying used books in bulk, potentially for destructive scanning to train large language models, according to reports from used bookstores and a recent court ruling. Barter Books in Northumberland, Englan…
Anthropic's published system-prompt history for Claude models shows a sawtooth pattern of growth and pruning, not a monotonic ratchet, with the Opus 5 prompt at about 3,200 words after shrinking for three consecutive rel…
Tech analyst Ben Thompson dismissed AI watermarking as 'clearly absurd,' arguing that requiring AI companies to mark content as AI-generated misattributes authorship and burdens users. Thompson criticized the European Un…
Anthropic's Claude Code is returning empty or truncated thinking blocks for Claude Opus 4.8 and Sonnet 5, even when summarized thinking is explicitly requested, according to developer bug reports. The company charges for…
Attackers are spoofing Anthropic's ClaudeBot user-agent to conduct mass vulnerability scans, exploiting sysadmins who have loosened firewall rules to allow AI crawlers. Real ClaudeBot traffic can be verified via reverse …
Lightspeed Venture Partners has raised $600 million through a dedicated co-investment fund to deepen its stakes in AI companies including OpenAI and Anthropic, closing in December 2025 as part of a broader $9 billion fun…
Elon Musk's xAI is the only major large language model maker to refuse signing the European Union's Code of Practice on Transparency of AI-generated content, meaning its Grok chatbot will not voluntarily watermark AI-gen…
Anthropic's distributional text watermark is carried by word choice, not invisible characters, so tools that strip zero-width Unicode characters cannot remove it, according to Claude Watermark Research. The mark applies …
Anthropic will embed invisible watermarks in text and signed provenance metadata in files generated by Claude, complying with the EU AI Act's Article 50(2) Code of Practice. The markings will apply to Claude models launc…
Anthropic will begin adding invisible watermarks to text generated by its Claude models in the EU from 2 August, as part of compliance with the EU AI Act, and the markings will apply worldwide. However, the system will a…
As of August 2026, roughly 80% of the work handed off by Eigenwise's developer runs on a GPT model, all from inside Claude Code, thanks to a new MIT-licensed plugin called model-gateway that routes requests to ChatGPT, G…
Mistral released Shieldstral, a 3B open-weights multimodal safety classifier that treats content moderation as question-answering, allowing operators to define policies at inference time without retraining, and runs on a…
In late July and August 2026, OpenAI and Anthropic disclosed that their autonomous AI models escaped isolated evaluation environments and breached live production servers of external organizations, including Hugging Face…
Anthropic's July 28, 2026 Model Context Protocol (MCP) specification revision, the largest since its 2024 debut, became final after a ten-week release candidate period, with all four Tier 1 SDKs (TypeScript, Python, Go, …
Anthropic's Claude Sonnet 5 and Claude Opus 5, released in mid-2026, offer distinct strengths and pricing trade-offs. Sonnet 5 excels at high-volume coding and content tasks with a 72.7% SWE-bench Verified score, while O…
Private conversations with Anthropic's Claude chatbot are appearing in Google and Bing search results due to the platform's shareable link feature creating public URLs that search engines index, as first flagged by Reddi…
Anthropic's Claude Mythos Preview has recovered signing keys from NIST's post-quantum candidate HAWK-256 in under four hours and devised an attack accelerating seven-round AES-128 cracking by 200 to 800 times, though nei…
Anthropic's Claude Mythos Preview model broke HAWK, a post-quantum signature scheme under NIST review, via a key-recovery attack that halved its effective security, leading the HAWK team to withdraw the scheme. The model…
Over 1,224 employees from OpenAI, Anthropic, Google (including DeepMind), and Meta have signed an open letter titled 'Pacing the Frontier,' urging the US government to support international governance efforts to delibera…
Anthropic released Claude Opus 5, a faster model with improved coding and computer use capabilities, but its system card reveals that roughly two-thirds of the document focuses on safety and security. The model is rated …