Anthropic has released the first Claude models that add invisible watermarks to every text and file response. At the same time, the company has opened a detection API for approved organizations to verify whether content carries a Claude watermark. Claude Fable 5.1 is now generally available through the Claude desktop app and other platforms. Claude …
I’ve seen some confusion online about the difference between “Chat” and “Cowork” in Claude or “Chat” and “Work” in ChatGPT. They look almost the same. What’s the difference? Is one better than the other? Should I only use “Cowork” now because “Chat” is old and inferior? The actual difference between these two modes comes down …
Anthropic has introduced Claude Fable 5.1, a generally available AI model aimed at coding, knowledge work, and long-running automated tasks. The company is also releasing Claude Mythos 5.1, the same underlying model with less restrictive cybersecurity and life-sciences safeguards for vetted organizations. The most immediate change for many businesses is pricing. Anthropic has kept Fable …
Anthropic has combined the memory systems used by Claude chat and Claude Cowork. Information Claude retains from conversations can now follow users between the chatbot and the company’s task-focused Cowork tool. David Gewirtz reports for ZDNET that the shared memory works in both directions. Context created in Cowork can also be used in later Claude …
Anthropic has disclosed that its forthcoming Claude text watermark uses a secret pattern in the model’s word-selection process, rather than hidden characters or metadata. The method can identify text that Claude likely generated or substantially processed, but it needs enough text to produce a reliable result and can be defeated by a complete rewrite. The …
Anthropic has introduced cross-session messaging for Claude Code, allowing separate AI coding sessions on the same computer to exchange short updates, findings and requests while work is in progress. The feature is available from Claude Code version 2.1.224 on macOS and Linux. It is designed for people running several sessions in parallel, for example on …
AI coding agents can now plan experiments, write software, run tests, inspect failures and revise their work with limited human supervision, according to a detailed personal case study by Google DeepMind researcher David P. Reichert. Reichert writes in his Substack that recent tools such as Anthropic’s Claude Code should be understood less as chatbots and …
Anthropic plans to add machine readable marks to content generated by future Claude models. The company says models introduced after August 2, 2026 will embed invisible watermarks in generated text and attach signed provenance metadata to supported files. The policy is part of Anthropic’s commitments under the EU AI Act’s Article 50(2) Code of Practice …
Claude is a powerful and capable AI, but it can sometimes be difficult to steer it in the right direction. This is especially frustrating with recurring tasks. Skills help you with exactly this challenge. They are detailed descriptions that tell Claude how to do something, step by step, with rules, examples, and more. Originally developed …
Anthropic says the latest generation of Claude models performs better with shorter, clearer background instructions and more room to apply its own judgement. The company reports that it removed more than 80% of the Claude Code system prompt for models including Claude Opus 5 and Claude Fable 5, without a measurable decline in its coding …