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PTE practice tests with instant AI scoring and realistic mock exams

AI-powered diagnostic practice tests for SAT®, ACT®, PSAT/NMSQT® and AP® — scored in about 40 minutes

AI-adaptive LSAT drilling for Logical Reasoning and Reading Comprehension

Lightweight A/B testing and experimentation for marketers who own conversion

Triangulated measurement: incrementality, MMM and causal attribution

Ship with confidence: one system of record for manual, automated, and CI tests

GenAI-native end-to-end QA agent that plans, writes and heals tests in plain language

Adaptive experience optimization for humans and AI agents

Write end-to-end test automation in plain English, no code required

AI-augmented quality platform for web, mobile, API and desktop testing

Test, monitor and improve the voice AI agents you already run

Agentic end-to-end testing that writes, runs and heals your test suite

Enterprise online exam platform with professional psychometrics

Agentic AI QA engineer for web, iOS, and Android testing

Practise PTE Academic and PTE Core free, with AI scoring for speaking and writing

Agent-native end-to-end testing that maintains itself

Evaluate, monitor, and govern your AI applications in production

End-to-end certification platform built by psychometricians

Ace the Duolingo English Test with AI scoring and 18,000+ practice questions

Your weekly website improvement agent — find, test, and ship CRO wins

Agentic test automation that builds, runs and maintains your enterprise tests

Unified observability, security and incident response for cloud-scale engineering teams

Standardize LLM evaluation, observability, and red teaming across your whole org

Agentic QA that tests every change like a real user and opens the fix PR