Get the AI job. Two ways in.

Certs get you the interview. Agent skills get you the job. Pick where you are today.

Build with coding agents

4 hands-on courses: Harness Engineering from Scratch, Claude Code for Creators, Claude Code for AWS, Loop Engineering. Lesson 1 of each is free.

From $29 pre-order · lifetime access

Pass an AI or cloud cert

7,580 exam-style questions with instant explanations across 19 certifications from Anthropic, AWS, Azure, Google Cloud, NVIDIA, and Databricks.

AWSAnthropicAzureGoogle CloudNVIDIADatabricks
No credit card. Sign in to keep your progress and score history.
By signing in, you will receive occasional study tips and updates. Unsubscribe anytime.
Free Claude practice →
AWSFoundational

AWS Certified AI Practitioner

AIF-C01

Real exam-style questions covering AI/ML, GenAI, and responsible AI on AWS.

500+ practice questions
Try Free Practice Test
AzureFoundational

Microsoft Azure AI Fundamentals

AI-900

Practice questions for Azure AI fundamentals including computer vision and NLP.

500+ practice questions
Try Free Practice Test
Google CloudFoundational

Google Cloud Generative AI Leader

GenAI-Leader

Prepare for Google Cloud's Generative AI leadership certification.

500+ practice questions
Try Free Practice Test
NVIDIAAssociate

NVIDIA Generative AI LLMs Associate

NCA-GENL

Master NVIDIA's Generative AI and LLM associate-level concepts.

500+ practice questions
Try Free Practice Test
AWSAssociate

AWS Certified Machine Learning Engineer - Associate

MLA-C01

Build, deploy, and monitor ML pipelines with SageMaker for the MLA-C01 exam.

500+ practice questions
Try Free Practice Test
AWSAssociate

AWS Solutions Architect Associate

SAA-C03

Real exam-style practice questions with instant explanations.

500+ practice questions
Try Free Practice Test
AWSProfessional

AWS Generative AI Developer - Professional

AIP-C01

Real exam-style practice questions with instant explanations.

500+ practice questions
Try Free Practice Test
AnthropicFoundational

Claude Certified Associate - Foundations

CCAO-F

Use Claude effectively for knowledge work, validation, workflow design, and responsible adoption.

20+ practice questions
Try Free Practice Test
AnthropicFoundational

Claude Certified Developer - Foundations

CCDV-F

Build reliable Claude applications with the API, Agent SDK, tool use, and MCP.

20+ practice questions
Try Free Practice Test
AnthropicFoundational

Claude Certified Architect - Foundations

CCAR-F

Design production Claude agents, tool boundaries, prompts, context, and team workflows.

20+ practice questions
Try Free Practice Test
AnthropicProfessional

Claude Certified Architect - Professional

CCAR-P

Own end-to-end Claude solution architecture, governance, evaluation, and enterprise delivery.

20+ practice questions
Try Free Practice Test
Google CloudProfessional

Google Cloud Professional Machine Learning Engineer

PMLE

Design, productionize, orchestrate, and monitor conventional and generative AI on Google Cloud.

500+ practice questions
AzureAssociate

Microsoft Azure AI Apps and Agents Developer Associate

AI-103

Build Microsoft Foundry apps, agents, vision, language, and knowledge-mining solutions.

500+ practice questions
DatabricksAssociate

Databricks Certified Generative AI Engineer Associate

GenAI Engineer

Build, deploy, govern, evaluate, and monitor production GenAI applications on Databricks.

500+ practice questions
AzureAssociate

Microsoft Machine Learning Operations Engineer Associate

AI-300

Operate ML and generative AI lifecycles with MLOps, GenAIOps, evaluation, and observability.

500+ practice questions
DatabricksAssociate

Databricks Certified Context Engineer Associate

Context Engineer

Engineer retrieval, instructions, memory, tools, compaction, and long-horizon agent context.

500+ practice questions
AzureProfessional
Beta exam · prep preview

Microsoft Multi-Agent AI Solutions Expert

AI-500

Beta-aligned multi-agent architecture, development, evaluation, security, and deployment practice.

500+ practice questions
NVIDIAProfessional
Exam coming soon · prep preview

NVIDIA-Certified Professional Agentic AI

NCP-AAI

Preview the published NCP-AAI blueprint with original, source-backed agentic AI scenarios.

500+ practice questions
NVIDIAProfessional
Exam coming soon · prep preview

NVIDIA-Certified Professional Generative AI LLMs

NCP-GENL

Preview the published NCP-GENL blueprint from architecture through GPU optimization and operations.

500+ practice questions

Free tech skills quizzes

Short diagnostics for the tools people ask ChatGPT to learn, debug, and interview on.