Find the right AI tools for any job, task or industry.

AI SKILLS · Software engineering

Evaluate AI systems

Define representative tests and measure the errors that matter for a specific workflow.

Advanced

Why this skill matters

A good demo does not establish reliability on unfamiliar inputs.

What to learn

  • Build a representative test set
  • Choose metrics for the cost of errors
  • Compare versions against a baseline

Before you begin

Basic statistics and test design

PUT IT INTO PRACTICE

Build a work sample

Create a small labeled classification dataset. Compare two approaches and explain false positives and false negatives.

Evidence of progress

An evaluation report showing failure examples and a justified acceptance threshold.

This exercise is an original ToolGrail suggestion. Use public, synthetic, or approved data.

LEARNING RESOURCE

Accuracy, recall, and precision

Google for Developers · Resource checked 2026-11-04

Open learning resource ↗

This may be documentation, a framework, or a training path. Product access, accounts, or paid licenses may be needed for hands-on exercises.

Tools you could practice with

Matched by related tasks. Use a tool you already have access to; these are examples, not course requirements.

Tool + MCPPricing not verified
99testsDeveloper tools

Order human-run real-device app tests from your coding agent; verified bugs return as fix prompts.

Details ↗
MCPPricing not verified
AgentDataAPIData analysis

Power prices and grid carbon, environmental sensors, weather alerts and forecasts, news signals.

Details ↗
Tool + MCPPricing not verified
AgentXDeveloper tools

Cloud console for a fleet of AI coding agents running on your own machines. OAuth.

Details ↗
Tool + MCPPricing not verified
AicommanderDeveloper tools

Remote shell and detached long-running jobs on your own machines no SSH, open ports or VPN.

Details ↗

Skill descriptions, exercises, and priorities are editorial. They are not professional qualifications or guarantees of employment. Read our skills methodology →