
Claude Opus 5: Pricing, Specs, and What Changed
Claude Opus 5 is here: model ID claude-opus-5, $5/$25 per million tokens, 1M context, and thinking on by default. What shipped and what breaks migrating from Opus 4.8.

Claude Opus 5 is here: model ID claude-opus-5, $5/$25 per million tokens, 1M context, and thinking on by default. What shipped and what breaks migrating from Opus 4.8.
Learn how to install claude-mem, the community tool that gives Claude Code persistent memory across sessions, plus how it compares to built-in options.
Learn how the Claude prompt generator in the Anthropic Console drafts structured, best-practice prompts for you, plus the prompt improver and a chat alternative.
When claude reached its tool-use limit for this turn, it hit a per-turn cap on tool calls. Learn what the message means and how to continue safely.
Getting 'readablestream is not defined' from the Claude SDK in Node? Learn the root cause and the ordered fixes: upgrade Node, polyfill, or configure your runtime.
Learn how to stop Claude Code asking for permission the safe way — session approvals, allowlists in settings.json, trusted folders, and the risky skip flag.
What is Claude Cowork? Anthropic's agentic AI that finishes whole tasks — research, documents, file organization — not just chat replies.