Browser Tab in Cursor 2.0 – How do AI models handle E2E testing?

Cursor 2.0 introduced some interesting features, including something that seems interesting from an E2E test writing perspective—a built-in browser. We'll take a look at Cursor's new features and how each model handles them. For testing, I used: Opus 4.5, Sonnet 4.5, Gemini 2.5 Pro, Gemini 3.0 Pro, Composer 1, and GPT-5.0 Codex. #ai #automatictesting #models 📆 Events: 📍 12/6/2025-12/16/2025 Fundraising for the ADHD Foundation https://howlingtesters.pl/merry-testers/ Event by @HowlingTesters 📍 12/8/2025 Wrocław: QA Tester Meetup Tickets https://app.evenea.pl/event/qatesterw... 📍 12/9/2025 Online Testers Summit https://testersummit.pl/ 📍 1/29/30/2025 Online Ai Testing Conference https://www.aitestingconf.pl/ *Timeline* 0:00 Intro 1:40 Multi Model in Cursor 2:58 Built-in browser in IDE 5:16 Composer – Introduction 5:32 Events 8:45 Model Evaluations, Evaluation Process and Its Drawbacks 11:10 Errors Made by All Models 12:00 GPT-5.0 Codex 12:50 Cursor Composer 1 13:28 Claude Sonnet 4.5 and Opus 4.5 15:30 Gemini 2.5 Pro and 3.0 Pro 17:50 Summary