Habit 3 of 3
Ask for a blind review
The third habit from Help it help you. The first two are give it access and write it down.
Start with a fresh chat
You don't need anything special for this. Open a new chat in whatever tool you already use, so it has none of your conversation. Give it the draft and the sources the draft came from, and nothing else.
If you've been working in one long chat, ask that chat to write the reviewer's instructions, then paste them into the new one. Either way, the new chat sees what your reader will see.
Paste this
"Check this draft against the sources I've attached. List every statement the sources don't support, anything that's wrong, and anything a careful reader would question. Put the most serious problems first and label small ones as nitpicks. Don't rewrite the draft."
That last line keeps it to a list. A rewrite buries the problems in new sentences, and then you can't tell what changed.
Hand over the work and keep your reasoning
A reviewer can't question an assumption you hand it as background. We've made this mistake more than once. We gave a reviewer a document along with a note saying it was the right version. It was the wrong one, and nothing in that review could have caught it, because the note was background, not a claim to check.
So put every claim you want checked in a list, and say where each one came from: the customer told us, or we worked it out. Then ask the reviewer to try to disprove each one.
Paste this
"Here are the claims this draft makes, and where each one came from. Treat each claim as something to disprove. Check it against the sources and mark it supported, wrong, or can't tell."
Keep your conclusion out of it too. If you've already written a summary or a recommendation, leave it out of the review. Once a reviewer has read your answer, its agreement mostly proves it can read.
Ask a different model
Asking the same model again mostly gets you the same blind spots again. We once had AI count the spaces in a drone photo of a parking lot. One model said 168, then 168, then 169. That looks like confidence. A different model looked at the same photo and said 95.
Measuring the painted lines in one row against the standard width of a parking space pointed toward the higher number, but neither count was good enough to use. We set the AI counts aside and asked a person to count from the photo.
Where a task has a physical or arithmetic check, use it. Paint lines have a standard spacing. Totals have to add up. A measurement doesn't share a model's blind spots.
Disagreement is useful, too. For the Chick Springs history project we transcribed handwritten land records from the early 1800s. At least three different models read each one. A separate AI judge, blind to which model wrote what, compared their readings against the page one line at a time. It decided from the ink, never by majority vote.
The places where readers disagreed told it where to look hardest. Lines that neither the ink nor other records could settle stay marked uncertain instead of guessed, about a dozen of 313 lines across six documents.
Run it until only nitpicks are left
Fix what it finds, then run a fresh review on the new draft. Each round tends to turn up smaller problems than the last, and a fix can bring in a mistake of its own. Stop when a pass comes back with only nitpicks.
Anything you add along the way goes back through. A new paragraph or a new number hasn't been checked just because the draft around it has.
Have it read as the recipient
A fact check asks whether the draft is right. A reader check asks whether it works for the person getting it, and the two catch different things. Run both, each in its own fresh chat.
Paste this
"You are [the person receiving this, and what they care about]. Read it the way they would. What would you ask first that it doesn't answer? What would make you trust it less?"
Here's what that looked like on a weekly ad report for a client. Before it went out, a fact reviewer rebuilt each claim from the source data, and we ran it until it came back clean. A line about money we had held back was false. Spending was right on plan.
A jump in the click rate came mostly from dropping a weak ad placement midweek, so the report credited that change. Otherwise next week would have looked like a drop. A line saying a competitor had pulled back was true on one platform only.
Then a second reviewer read it as the client and named the question they would ask first, and the answer moved near the top. Four reports went through this that day, and every one changed.
If you're running agents
Everything above works by hand. Once agents do the reviewing for you, a few more things start to matter.
An empty search proves nothing yet
"I couldn't find it" and "it doesn't exist" read the same in a report, and it's easy to slide from one to the other. Before you trust a not-found, run the same search for something you know is there. If that comes back empty too, the search is broken.
An agent once told me a client had no folder in our Google Drive. Its search had returned 40 results and a note that there were more. The folder was on page two.
Test the reviewer on good work too
A check that can't fail isn't a check. If you only test a reviewer on work with known mistakes, one that flags everything gets a perfect score.
We had an image checker that had only been tested on flawed images. Run against ten images we had already approved, it reported a serious defect on 19 of 20 runs. Another candidate never flagged a good image, but it also missed all three flaws we planted, on both runs.
Work you've already approved is a free supply of good examples. Score both numbers: how much it catches, and how quiet it stays on clean work.
Agents find, you write
Use the reviewer to point at problems. Then open the source yourself before you change anything, and especially before you delete anything. A review once told me a data file on a website was read by nothing and could be retired. The homepage used it six times. One search of the code settled it.
The same goes for wording. A reviewer's suggested sentence is a lead. Check it against the source before it goes into anything people will rely on later.
Mix model companies on code
Claude reviewing Claude tends to share Claude's blind spots. On one code change that two Claude agents wrote and a third had reviewed, with three test suites passing, a review by OpenAI's Codex found eight real defects. Most sat in gaps between the tests.
None of this replaces reading the work yourself. I still read most of what ships. It just means fewer surprises when someone asks how you got that number.
Updated October 2026