QUICK ANSWERStart with the tool that matches your immediate input.
Open English B2 Grammar Test first when its stated purpose matches the result you need now. Use English C1 Grammar Test only when it solves a separate next task.
This guide is for language learners, students, travelers, and job seekers. Start with English B2 Grammar Test when your immediate task is to take the English B2 Grammar Test and receive an instant, clearly explained result. Move to English C1 Grammar Test only when you also need to take the English C1 Grammar Test and receive an instant, clearly explained result.
The goal is not to run two tools automatically. It is to finish the first narrow task, inspect its result, and then decide whether English C1 Grammar Test solves a genuinely different next step.
Both tools sit in Language & Learning Tests, but they handle different inputs or outcomes. Keeping those roles separate reduces repeated work and makes verification easier.