Recently after using Claude and Codex I've stopped thinking about my workday as 9 to 6.
The new AI 40-hour work week
My day typically starts by checking how my sessions line up with my tasks. But the sessions shift throughout the week and no two days are the same and most mornings I catch the tail end of a window.
The session trap
> finish the migration and open the PR · reading 41 files · rewriting the adapter layer ⚠ session limit reached further usage this session will be billed crunched for 1 hour 30 minutes.
illustrative — no vendor, plan, or price is being quoted
A partial session with most of its limit unspent is money left on the table. And often that deficit carries into the next full window, pushing me straight past that session's limit into the overage. Big Silicon gets paid on both ends.
I work the tide now.
06:00 Monday · 07:00 Tuesday · 08:00 Wednesday — the windows return an hour later each day, like a tide
Following the tide means some days start at six and some at ten. But now every window lands whole, instead of half-burnt before I even sat down.
Two WHOLE sessions a day.
from one a day to two — ten hours of session time does not fit an 8-hour workday
Same-sized sessions meant I could finally plan. Work gets cut to fit five hours, twice a day, every day. The next goal was obvious: spend the whole weekly limit.
The small clock went quiet. Only the big one still ticks.
The final frontier
I know the argument could be made where I can fit the weekly limit into the hours I work. But give the same task the other fourteen hours a day and it comes back better: well architected, peformance minded, security focused, built to scale, and if done right these gains make future implmentation easier. The question is how to claim those hours without becoming an AI vampire.
Nobody commutes at three in the morning.
The handoff
Days are mine; the nights and weekends go to the agents. The wiki brain took its shift already using Karpathy's idea and tends to the maintenance work that people often abandon while I sleep. I'm also looking at everything-claude-code as inspiration for the rest. After that, the only clock left that ticks is the weekly session limit.
A week is 168 hours.
The chair only holds 40.
I'm going to give AI the rest.