The CTFL v4.0 exam is 40 questions in 60 minutes and 26 points to pass. Those numbers are global. The fee, the retake interval, the calculator, and when you see your score are not — they belong to whoever sells you the exam.
ISTQB has issued more than 1.1 million certificates, which settles the question of recognition and nothing else. What the exam actually measures, what it costs, which syllabuses are retiring, and four questions to ask before you pay.
Eight places to take free ISTQB mock exams in 2026, checked on their own pages against six criteria: no sign-up, rationale on every option, stated syllabus version, timed full-length mocks, chapter drills, and no dumps. Plus a three-stage practice sequence for CTFL v4.0.
Chapter 4 supplies 11 of the 40 CTFL questions: 0 K1, 6 K2, 5 K3. Here is which five learning objectives the K3 questions must come from, what each asks you to compute, and how to budget the time.
As of September 2026 one part of ISO/IEC 42119 is published, one is a final draft and two are barely started. Here is the verified status of each part, how the series relates to TR 29119-11, and what the CT-AI syllabus actually examines.
Agentic systems fail at two layers, and 2026 gave each layer its own OWASP top ten. Here is what a tester should actually check, and exactly where ISTQB CT-AI v2.0 stops.
The seven testing principles in the exact CTFL v4.0 wording, including the two that were renamed, how many marks they are really worth, and the traps that separate the confusable pairs.
CTFL-AT retires on 6 May 2027 (EN) / 6 November 2027 (non-EN) with no grandfathering. Here is exactly what CTAL-AT v2.0 replaces, how the two exams differ, and when to make the switch.
The CTFL v4.0 syllabus has six chapters and 64 learning objectives, and the exam draws exactly 8, 6, 4, 11, 9 and 2 questions from them. Here is the official breakdown, the K-level split and how to study against it.
The four ISTQB black-box techniques — equivalence partitioning, boundary value analysis, decision tables and state transition testing — explained with worked examples.
How to test a machine learning model the ISTQB CT-AI way: check data quality, expose bias, and cover AI-specific quality characteristics — not just accuracy.
A tester-focused guide to precision, recall and F1 score: how to read a confusion matrix, when each metric matters, and why 94% accuracy can still be a bad model.
Where the study time for ISTQB CT-AI v2.0 really goes: the order to read the syllabus in, the CTFL habits that mislead you, how to drill ML metrics, and how to read a mock score.
ISTQB's Certified Tester AI Testing syllabus jumped to v2.0 in April 2026 — 11 chapters became 7, with new GenAI, LLM red teaming and dedicated data and model test levels. Here's every change and which version to sit.
Everything about the ISTQB CT-AI certification under the new v2.0 syllabus (2026): what it covers, the exam format, prerequisites, and how to prepare for testing ML and generative AI systems.
The ISTQB Foundation (CTFL v4.0) exam is 40 multiple-choice questions in 60 minutes, and you pass at 65% — 26 of 40. Here is exactly how the format, scoring and K-levels work.
Four weeks, hour by hour: the weekly rhythm that fits a working tester's evenings, the order I would learn the syllabus in, the preparation mistakes that cost people the exam, and how to read a mock result.
Everything you need to know about the ISTQB Foundation Level (CTFL v4.0) certification: what it is, the exam format, the six syllabus chapters, and how to prepare efficiently.