Evaluation Builder

Know every change to your AI agent made it better , not worse

Argmin AI turns your domain docs and expert-reviewed traces into a calibrated evaluator for every agent change. No golden dataset required upfront.

First evaluator free · No card · Your data stays private

Watch a calibrated evaluator get built from real traces.

You change a prompt or model and can't tell if the agent got better or quietly broke something that already worked.

Generic LLM judges pass the wrong things

A generic judge can tell you an answer sounds reasonable.

It cannot know your task, policies, edge cases, or expert standard until it is calibrated.

Task definition
AnsweredDoes a partial answer pass?
Score anchors
Answered
Edge cases
Covered
Domain model
CoveredBlind to domain synonyms
Release gate
Set
Expert labels
Resolved
Forbidden elements
ResolvedCase 12 vs 41 conflict
Required elements
AnsweredMust it cite its source?

A judge grounded in your business and your experts

Business-specific, not generic

Scored against your product's standard, your domain rules, and your workflow — so you can trust a pass, not take a generic “looks reasonable” on faith.

Built on your experts' vision

Your experts' corrections become the rubric and the labels — it reuses their judgment, it doesn't replace them — so the judge scores the way your team would.

No golden dataset upfront

It cold-starts the judge and a calibrated test set from your traces, plus synthetic and adversarial cases.

Explained, not a black box

Criterion-level scores with a reason for every pass or fail, so you see what broke and why.

A release gate that lasts

Versioned rubric and history; rerun it on every prompt, model, RAG, or agent change.

Your first calibration run is free — then evaluator builds from €25. No card to start.

See full pricing

What you get

Evaluator · calibrated

An evaluation system, calibrated

Rubrics, edge cases, and judges tuned to your domain and aligned with your experts. Ready to run on every model, prompt, or agent change so you see what improved and what broke.

Dataset · aligned

A calibrated test set

A lightweight, labeled set built during calibration. You confirm, override, or drop the labels, so it reflects your team's judgment, not the model's. Enough to start testing the AI agent you are building.

How it works

A calibration flow for teams that do not have a clean golden dataset yet.

Inputs

Bring task, docs, traces, and hypotheses

Start with the AI task, domain docs, selected traces, and a few hypotheses about what good looks like. No golden dataset is required upfront.

TaskDomain docsSelected tracesQuality hypotheses
Bring task, docs, traces, and hypotheses
Argmin AI picks cases and analyzes evaluator mistakes
Cases

Argmin AI picks cases and analyzes evaluator mistakes

The platform finds normal, edge, and high-risk examples and surfaces where the evaluator disagrees with experts, so review time is spent on cases that actually move agreement.

Review

Experts review, confirm or correct calls

Experts review and correct evaluator calls Argmin AI drafts first, never from a blank page.

Experts review, confirm or correct calls
Corrections improve the evaluator and become the eval set
Calibrate

Corrections improve the evaluator and become the eval set

Every correction sharpens the evaluator and updates the calibrated eval set, quality rubric, score anchors, and calibration history.

Run

Test every AI change

Use the evaluator on prompt edits, model switches, RAG updates, routing changes, and agent releases.

Prompt editsModel switchesRAG changesAgent releases
Test every AI change

Evaluation made optimization safe

Argmin AI Pareto cost reduction chartArgmin AI Pareto cost reduction chart

0.0%

Safety maintained while optimizing cost

0%

Cost optimization

0

Edge cases

0

Evaluators

Internal Case Study: Mental Health Conversational AI

Main challenge: Build the quality bar before reducing cost

Results

  • 9-judge evaluator suite
  • 450-item edge-case stress test
  • Clinical safety maintained
  • 87% cost reduction after quality was measurable

What this proves

The evaluator is not a prompt pasted into a spreadsheet. It is a calibrated quality system built before optimization decisions affect the product.

Watch the evaluator build flow

See how a task becomes a runnable evaluator your team can trust before agent changes ship.

Demo · calibration flow7 min to your first evaluator

Key benefits & features

Calibrated Eval Set

Calibrated Eval Set

Labels are created during calibration from selected traces and expert corrections, not demanded upfront.

Review, Not Grind

Review, Not Grind

Argmin AI drafts evaluator calls and picks the cases; experts confirm, correct, and add reasons.

Core Regression Cases

Core Regression Cases

Keep the cases your AI cannot afford to break across prompts, models, RAG, and agent changes.

Runnable Artifact Bundle

Runnable Artifact Bundle

Get the evaluator, rubric, eval set, score anchors, and calibration history your team can inspect.

No golden set upfront / Expert corrections compound / Test every AI change

Your data stays privatePrivate by default

Used only to build and run your evaluator.

We don't train on itNever used to train

Never used to train shared models.

You decide what's sharedYou control sharing

NDA and tighter infra available on request.

1 free run to test1 free test run

No card required. See it work on your data first.

Build evals before you develop agentic AI

Create the quality bar first, then change models, prompts, routing, and agents with evidence.

First evaluator free · No card · Your data stays private

FAQ

No. Existing labels help, but they are not a precondition. Argmin AI starts from your task, domain docs, selected traces, and expert corrections during calibration.
Usually selected traces, representative outputs, product constraints, and domain docs. You decide what is shared. We can work under NDA and with tighter infrastructure constraints when needed.
No. Synthetic cases can expand coverage, but the calibration anchor should come from your real traces and your experts' corrections.
No. The evaluator drafts calls first, Argmin AI picks the cases that matter, and experts confirm or correct. Labeling becomes review, not a blank-page grind.
A calibrated eval set, quality rubric, runnable evaluator, core regression cases, and calibration history your team can reuse across AI changes.
Yes. The evaluator creates the quality bar first. After that, Argmin AI can optimize prompts, models, routing, retrieval, and agent architecture without flying blind.