most people run Opus on everything and wonder why their usage melts by noon
you don't need Opus to grep a file. here's the setup that fixed it for me
claude --model sonnet --advisor opus
Sonnet runs the session and writes the code. three Haiku subagents do the grunt work in parallel:
search → maps the repo, read-only
grep → finds every call site in its own context
audit → checks the diff in a throwaway worktree, never touches my branch
Haiku runs all of that at 0.05x Sonnet's price. the cheap model does the boring 80%
Opus doesn't sit in the loop. it's an advisor. it only wakes up 3 times:
before a plan locks
when the same error hits twice
before it ships, to sign off on the diff
that's the whole trick. stop paying the smart model to read logs
one catch people miss: the env var that sets the subagent model is just a default. drop model: haiku into each agent file or they'll quietly run on Sonnet and you're back to square one
prompt to set it all up is below. paste it, read the diff before you say go
it's been running my repo all week. main context stays tiny, bill dropped, and i stopped babysitting it
f*cking insane. you can give Claude Code a night shift: 1 rule, your laptop shut, and Opus 5.5 has a stack of tested fixes waiting for you by morning
the AI chief of staff post above hit 350K views overnight. here's the dev version, and it's 2 things already in the Claude Code docs: claude -p and a cron job
no junior on nights. no $200K hire. it costs whatever you cap it at with --max-budget-usd
you give the goal, it does the steps, you only make the calls
the rule:
"clear my issue backlog. reproduce before you fix. never touch main. merge nothing without my yes"
the night:
→ 11pm Opus 5.5 reads every open issue and splits the work into jobs
→ 12am Haiku 5.5 subagents try to reproduce each bug in their own worktree, dupes and stale ones get cut
→ 1am Sonnet 5.5 writes a fix for every bug it could reproduce, 1 branch per issue, tests included
→ 3am a reviewer that never saw the writer's chat reads every diff: PASS or FAIL
→ 5am every FAIL gets 1 more try, then it's parked with a 1-line note
→ 8am you open summary.md with your coffee
honestly the "park it" step is the whole thing. an agent that can't say "i couldn't fix this" ships garbage straight to your main branch
and it runs again every night at 11pm. it never forgets to start
312 open issues → only the bugs it can reproduce → only the fixes a second model passes → 0 merged without you
it opens branches. it never merges
someone's backlog is already getting cleared while they sleep
the full setup is below ↓ free, steal it
everyone's counting the 300 agents.
nobody's asking who checks their work.
that's the part that actually matters. 300 agents with nobody checking = 300 ways to merge garbage at once.
the fix is stupid simple. a second model that never saw the code being written reads the diff and says yes or no.
1 agent writes:
claude -p "Fix issue #142. Commit to branch fix-142."
a cheap Haiku 5.5 checks:
git diff main..fix-142 | claude -p --model haiku "You didn't write this. Does it fix issue #142? PASS or FAIL + 1 reason."
FAIL → back to the writer
PASS → merge
that's it. it works because the checker has zero reason to defend the code. it didn't write it.
and Haiku 5.5 is $0.10 per 1M input tokens. checking 300 diffs costs less than your coffee.
for the merges that can break prod, swap haiku for opus.
checker prompt in the reply. save this before your agents start shipping
It is becoming f*cking dangerous: 1 prompt to Claude and it built a lab that turns any photo into a living 3D data structure
1 HTML file. No install. No backend.
Upload an image and it rebuilds it as:
→ a rotating ring of dot-matrix blocks sampled from your pixels
→ thousands of spikes, taller where the image is brighter
→ a web of threads connecting the darkest points
→ the original photo, redrawn as halftone dots underneath
The camera cuts every 6 seconds. Overview. Dive into the spikes. Skim the ring.
There's a record button. It exports the whole thing as a video.
This one is a diagram of diseases I found on Pinterest.
The prompt is below. Save it before you need it.
@maixbt Exactly. Screenshots die in 3 seconds. The record button turns it into something you can actually share and drop anywhere.
1 file is the other half of it zero friction.