Moving from Claude Haiku 4.5 to 5.5: what changed on the same 100 prompts

Four Claude Code fixes in six days for permission checks a shell variable could slip past. Run the bash and zsh lines that show why text matching loses.

When coding agents such as Claude Code and Codex became good enough to take whole tasks, the first...

Haiku 5.5 charges 5x once a prompt passes 100,000 tokens. A TypeScript guard that counts first, trims chunks, logs the billed tier and fails CI.

Handoff is an open-source, local-first job-hunt workflow for Claude Code. It does the tiring chores and stops before anything that can't be undone.

Production-tested patterns for dispatching, coordinating, and merging multiple Claude Code subagents without race conditions, context pollution, or merge overhead.

A practical guide to the Claude Certified Architect – Foundations exam: the format, the five domains,...

For eight weeks our limit of 10 concurrent Claude Code subagents was a sentence in CLAUDE.md, and...

My busiest 30 days with Claude Code: 225.1 billion tokens, 97.9% of them cache reads, 1,029 merged pull requests, and subagents that defaulted to Opus.

The headless command, JSON flag, permission setup, resume and exit code for Claude Code, Codex, Gemini CLI, Copilot CLI and OpenCode, from current docs.

I experiment with skills often, constantly tweaking the ones I create and trying out skills from...