Claude Seems Down

news.ycombinator.com

It’s not just Claude API. See: “We are investigating reports of degraded performance affecting claude.ai, platform.claude.com, the Claude API, Claude Code, and Claude Cowork.”. Seems pretty big to me. It’s software used by many here so of course you will … Read more

Claude: System Prompts

platform.claude.com
claude:-system-prompts

Copy page span]:opacity-0 [&:has(+[data-cds-segment]:hover)>span]:opacity-0 [[data-cds-segment]:has([aria-haspopup][aria-expanded=true])+&>span]:opacity-0 [&:has(+[data-cds-segment]_[aria-haspopup][aria-expanded=true])>span]:opacity-0 [[data-cds-segment]:has([aria-pressed=true])+&>span]:opacity-0 [&:has(+[data-cds-segment]_[aria-pressed=true])>span]:opacity-0″>  Claude’s web interface (claude.ai) and mobile apps use a system prompt to provide up-to-date information, such as the current date, to Claude at the start of every conversation. The system prompt … Read more

How Claude marks AI-generated content

support.claude.com
how-claude-marks-ai-generated-content

Anthropic has signed the EU AI Act’s Article 50(2) Code of Practice on Transparency of AI-Generated Content, as a provider of both generative AI models and generative AI systems. This article describes how we’re planning to put those commitments into … Read more

Claude Is Down

status.claude.com
claude-is-down

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Claude Opus 5

anthropic.com
claude-opus-5

Claude Opus 5 is available today. It’s a thoughtful and proactive model that comes close to the frontier intelligence of Claude Fable 5 at half the price. On coding and knowledge work evaluations like Frontier-Bench and GDPval-AA, Opus 5 is … Read more

Claude Cookbook

platform.claude.com
claude-cookbook

Reproduce Claude’s agentic search benchmark scores in the Messages API Jun 2026• EvalsTools Build a Messages API harness that reproduces published DeepSearchQA and BrowseComp scores, using programmatic tool calling, server-side compaction, and task budgets. EvalsTools Mengting Li Jun 2026 Classifier … Read more

Claude Is Not a Compiler

blog.exe.dev
claude-is-not-a-compiler

In early 2025, I wrote Is Claude a Compiler? At the time, my answer was: I don’t know. I’m now pretty sure the answer is “no, that’s a category error, it’s better than a compiler.” But this requires a bit … Read more