Context & Token Optimization

Claude rereads your entire conversation on every message, which is why message 30 can cost 232,000 tokens when message 1 cost 500, and why most viral "token saver" skills save far less than advertised.

Why Opus 5's real advantage isn't the benchmark score. It's how much less of its work you have to fix afterward.

Memory, skills, and using Claude or ChatGPT as an adversarial sparring partner, the three prompting families that hold up over time instead of decaying into daily prompt babysitting.