How to Create a Model Eval Report with AI (2026): The Sample, the Failures, the Reader

A model eval report written with AI states the sample you already chose, the pass rule you already wrote, the failures you already logged, and the person who read them. The model may format that report. It may not invent a pass rate, drop a failure, or declare the model ready to ship. How many cases you owe is what an AI eval sample size is. The suite those cases belong to is what an AI eval regression suite is. The queue for the cases a person still has to read is what an AI human review queue is.

Claude’s prices are from claude.com/pricing on October 24, 2026. Notion and Cursor prices are from directory pages checked October 16, 2026. ChatGPT Plus is $20 a month on learn.chatgpt.com/docs/pricing on October 24, 2026. Published October 24, 2026. We did not score models.

What the report contains

Section	Who owns it	The model may
The sample size and how you drew it	The eval owner	Copy both. It may not round the sample up
The pass rule	You, in words a stranger can apply	Copy it. It may not soften “must” into “should”
Each failure, with the case id	The person who logged it	List every id in the paste. It may not merge two
Who read the failures	You	Copy the name. A blank stays Reader missing
The decision	The owner, after they read	Format the words the owner already chose

flowchart TD
  rows["You paste the sample, the rule, and the failure ids"] --> draft["Claude or ChatGPT formats the report"]
  draft --> drop{"Did a failure disappear, or did a pass rate appear that you did not calculate?"}
  drop -->|Yes| cut["Delete that line"]
  drop -->|No| reader["The named reader checks the failures"]
  reader --> decision["The owner writes the decision. The report does not ship the model"]

A confidence label on an answer is a different object. If you are reporting one, the definition has to be in the paste. The label’s limits are what an AI output confidence score is. A report that says “high confidence, so we ship” has skipped the decision. The decision is a sentence the owner writes.

Where it is written

The draft, when every report uses the same headings. Claude Pro is $17 a month billed annually, $200 up front, or $20 monthly. Put the headings in the Project. The review is Claude review.

The page the team will reopen. Notion AI Business is $20 a seat a month if that is the eval log. Plus at $10 is not the full AI tier on the October 16 card. The invoice is Notion AI pricing explained.

One report from a short table. ChatGPT Plus is $20 a month. Discard a version that adds a percentage you did not paste. The review is ChatGPT review.

The prompt under test, if it lives in a repo. Cursor Plus is $8 a month, or $80 a year, on the October 16 card. The report names the prompt version. The editor does not change that version while you are writing the report. The ladder is Cursor pricing explained.

A prompt that holds the line:

“Write the eval report from the sample size, the pass rule, the failure ids, and the reader I pasted. If a field is missing, write Missing. Do not compute a pass rate. Do not recommend that we ship.”

What not to delegate

Do not ask the model which failures “do not matter.” Do not average two runs that used different samples. Do not let the report change the prompt it is judging. A prompt change is a separate request: how to write a prompt change request with AI.

FAQ

How is this different from the sample-size explainer?

That page is how you choose the number of cases before you trust a result. This page is the report after you have a number, a rule, and a list of failures. The report copies the number. It does not pick a new one.

Can the model calculate the pass rate if I paste the counts?

Only when you paste the counts and you ask for the arithmetic in the open, and you check it. If either count is missing, the line says Missing. A rate with a blank denominator is a fiction.

What if a failure was a bad test?

The owner says so, in the report, with the case id. The model does not reclassify it. A bad test is still a row until a person strikes it and says why.

Who may say the model is ready?

The eval owner, in the decision line, after the named reader has seen the failures. A tidy report is not a release. The go-live list, if this model is part of a launch, is a different document.

Last verified

October 24, 2026 for Claude and for ChatGPT Plus. October 16, 2026 for Notion and Cursor. Published October 24, 2026.

Sources: Claude pricing, Notion pricing, ChatGPT and Codex pricing, Cursor pricing.

Published by Andrew for AI Tools Optimizer.

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