Claude Fable 5.1 and Claude Mythos 5.1(anthropic.com)
1332 points by denysvitali | 1269 comments
Anthropic documentation page describing new features, breaking changes, and capability improvements in Claude Fable 5.1 and Claude Mythos 5.1.
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Prompting Claude Opus 5.5(platform.claude.com)
177 points by Michelangelo11 | 191 comments
Anthropic's Claude Platform documentation page giving prompting guidance for Claude Opus 5.5, covering behavioral differences from Opus 5, effort calibration, thinking, and agentic tasks.
Apple Foundation Models(platform.claude.com)
457 points by MehrdadKhnzd | 214 comments
Anthropic documentation for the Claude for Foundation Models Swift package, which lets Apple apps use Claude via Apple's Foundation Models framework LanguageModel protocol.
Claude Code SDK(docs.anthropic.com)
427 points by sync | 186 comments
Anthropic documentation page for the Claude Code SDK, which lets developers run Claude Code programmatically as a subprocess from their applications.
Anthropic officially bans using subscription auth for third party use(code.claude.com)
566 points by theahura | 690 comments
Claude Code documentation page listing legal agreements, compliance certifications, and security information, including terms governing subscription authentication use.
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Claude Code SDK(docs.anthropic.com)
427 points by sync | 186 comments
Anthropic documentation page for the Claude Code SDK, which lets developers run Claude Code programmatically as a subprocess from their applications.
Anthropic publishes the 'system prompts' that make Claude tick(techcrunch.com)
373 points by gemanor | 233 comments
TechCrunch article reporting that Anthropic has published the system prompts used to guide its Claude AI models.
Claude Code gets native LSP support(github.com)
481 points by JamesSwift | 305 comments
The CHANGELOG.md file in Anthropic's claude-code GitHub repository, listing release notes for Claude Code versions including 2.0.74.
Changes in the system prompt between Claude Opus 4.6 and 4.7(simonwillison.net)
337 points by pretext | 186 comments
Simon Willison's blog post comparing Anthropic's published Claude system prompts for Opus 4.6 and Opus 4.7, using a git diff to highlight the changes.
Claude Code: Best practices for agentic coding(anthropic.com)
549 points by sqs | 232 comments
Anthropic engineering blog post sharing tips and best practices for using Claude Code, a command-line tool for agentic coding, across codebases and languages.
Claude Science(claude.com)
547 points by lebovic | 160 comments
Product page for Claude Science beta, an Anthropic desktop app that runs analyses, searches databases, and tracks research steps from data wrangling to publication.