Try 4 free exercises
No account needed. Pick any pillar — Lesen, Hören, Schreiben, or Sprechen.
Prepare for Goethe/TELC B1 Exams
Lesen, Hören, Schreiben, Sprechen—targeted practice with AI feedback. Try 4 free exercises, no account required. Sign up for all Lesen & Hören, 7 AI evaluations, and 1 free full mock exam simulation.
How it works
Sign up, unlock more
All Lesen & Hören exercises, 7 AI evaluations for Schreiben and Sprechen, and 1 full mock exam.
Train all four parts
Exam-style tasks with AI corrections on your writing and speaking — not just scores.
Track your path
Dashboard, streaks, and a countdown to your Goethe or TELC exam date.
The four exam parts
Goethe/TELC B1 exam preparation: Lesen, Hören, Schreiben, Sprechen with exam-style tasks and instant AI feedback—no generic lessons.
Lesen
Reading comprehension exercisesReal texts, multiple choice, word-by-word help.
Hören
Listening comprehension exercisesAudio dialogs, exam-style questions.
Schreiben
Writing practice with AI feedbackLetters and emails, corrections with explanations.
Sprechen
Speaking practice with AI evaluationRecord yourself, get grammar and fluency feedback.
Why this trainer
Goethe/TELC B1 exam preparation only—not general German.
AI corrections on Schreiben and Sprechen—concrete feedback, not just scores.
German B1 practice online—try before signup; track progress after you create an account.
Frequently asked questions
What is Certium?
Certium is an AI-powered training platform for the Goethe-Zertifikat B1 and TELC Deutsch B1 exams. It delivers all four exam parts — Lesen, Hören, Schreiben, Sprechen — in the official format and grades writing and speaking with OpenAI GPT-4o.
Which exams does Certium cover?
Goethe-Zertifikat B1 and TELC Deutsch B1. Both are CEFR B1 certifications recognised across Europe for residency, study admission, and citizenship applications.
How does the AI evaluation work?
Schreiben submissions are scored by GPT-4o on a 4-dimension rubric (grammar, vocabulary, coherence, task completion) aligned with the published Goethe Modellsatz. Sprechen recordings are transcribed by Whisper-1 and evaluated by GPT-4o in examiner mode. Most evaluations return in under 10 seconds.
Can I try Certium without paying?
Yes. Four full exercises are available without an account. Sign-up unlocks unlimited Lesen and Hören practice, seven free AI evaluations on Schreiben and Sprechen, and one free full mock exam simulation under real timed conditions—no Pro plan required.
Is there a free full mock exam for Goethe B1 or TELC B1?
Yes. Every free registered account includes one full mock exam simulation at no cost. The simulation replicates the official exam format—Lesen, Hören, Schreiben, and Sprechen—under server-enforced time limits and proctored conditions (tab-visibility tracking). No Pro subscription is needed to take it.
Does Certium work on mobile?
Yes. The platform runs in any modern browser — desktop, tablet, or mobile — and uses the browser's MediaRecorder API for Sprechen practice. No app install required.
What score do I need to pass Goethe B1 or TELC B1?
Both exams require an overall score of at least 60% to pass, with no individual section scoring below 50%. Certium's dashboard shows section-level coverage and a B1 readiness percentage so you can target weak areas.