OG0-091 Pass Rate 2026: What the Data Shows

What the Data Actually Shows

Candidates searching for an "OG0-091 pass rate" number are usually looking for a shortcut - a single percentage that tells them how likely they are to succeed. The Open Group does not publish official pass rate statistics for OG0-091, and any specific figure you see quoted elsewhere should be treated with skepticism unless it cites a verifiable source. What we can do instead is look at the structural facts of the exam itself - the scoring threshold, the question count, the time limit, and the domain weighting - because these mechanics explain far more about your actual odds than a vague headline number ever could.

The passing score is fixed at 60%, meaning 24 correct answers out of 40. That threshold is public, verifiable, and far more useful for planning than an unofficial pass rate estimate. If you understand exactly how those 40 questions are distributed across the eleven domains, you can predict with reasonable accuracy where your preparation needs to be strongest.

Exam Mechanics That Shape the Numbers

OG0-091 is delivered through Pearson VUE, either at an authorized test center or remotely via OnVUE. It consists of 40 simple multiple-choice questions, and you have 60 minutes to complete it - that's an average of a minute and a half per question, which is tight but manageable if you know the material rather than needing to reason through it from first principles.

The exam is supervised and closed book, drawing its entire body of knowledge from the TOGAF 9 Standard, Version 9.2. There are no prerequisites, so anyone can register and sit the exam regardless of prior certifications or experience. That openness is a double-edged sword: it lowers the barrier to entry, but it also means the exam has to be answerable purely from documented knowledge of the standard, without relying on assumed real-world context.

Domain Weight and Where Candidates Struggle

The eleven domains are not weighted evenly, and that imbalance is the single most important factor in exam performance. A candidate who spends equal time on every domain is misallocating study hours relative to the actual point distribution. Here's how the weighting breaks down:

Notice that ADM Phases and ADM Guidelines and Techniques together account for 37.5% of the exam - nearly 15 of the 40 questions. Combined with Introduction to the ADM, more than 45% of the exam is directly ADM-related in some form. Candidates who treat the ADM as one topic rather than three distinct domains often underprepare for the nuance the exam expects. Our OG0-091 Exam Domains 2026: Complete Guide to All 11 Content Areas article breaks each domain down individually if you want a deeper map before you start studying.

Why ADM Phases Deserves Extra Attention

With 9 of 40 questions, ADM Phases is the largest single domain on the exam by a meaningful margin - more than double the weight of Basic Concepts or Core Concepts individually. This domain tests your ability to identify the objectives, inputs, steps, and outputs of each phase in the Architecture Development Method, from the Preliminary Phase through Phase H and the Requirements Management activity that sits at the center of the cycle.

Questions in this area often present a scenario or a partial description and ask which phase it belongs to, or what the next logical step would be. This means memorizing phase names in order is not sufficient - you need to understand what distinguishes Phase B (Business Architecture) from Phase C (Information Systems Architectures) from Phase D (Technology Architecture) in terms of purpose and deliverables, and how Phase E and Phase F handle opportunities, solutions, migration planning, and sequencing.

Question Style and Format Realities

OG0-091 uses what The Open Group describes as "simple multiple-choice" questions - a single correct answer selected from a set of options, without the complex scenario-and-multiple-response format used in some other TOGAF exams. This matters for pass-rate reasoning: the format rewards precise recall of terminology and phase structure more than it rewards judgment calls between similarly-worded distractors.

That said, "simple" does not mean easy. The Open Group's terminology is precise, and many wrong answers are designed to be plausible if you have only a surface-level understanding of a term. For example, distinguishing between a "building block" and an "architecture building block" versus a "solution building block" requires exact recall, not general familiarity. The same precision applies to Enterprise Continuum concepts, where candidates must distinguish the Architecture Continuum from the Solutions Continuum.

A Preparation Timeline Built Around the Domains

Generic study advice - spaced repetition, timed review sessions, flashcards - only helps if it's applied to the right material at the right time. Below is a domain-weighted timeline that allocates more time to higher-value content areas rather than spreading effort evenly.

This schedule deliberately front-loads ADM Phases in Week 2, well before exam day, so you have time to revisit weak spots. For a more detailed weekly breakdown with daily tasks, see the OG0-091 Study Guide 2026: How to Pass on Your First Attempt.

Who Takes This Exam and Why It Matters

OG0-091 attracts a fairly consistent candidate profile: enterprise architects, solution architects, business analysts, IT consultants, and professionals moving into architecture governance or EA tooling roles. Organizations that have standardized on TOGAF as their architecture framework often require or recommend TOGAF 9 Foundation as an entry point before staff pursue the full TOGAF 9 Certified designation.

Because passing OG0-091 earns partial credit toward TOGAF 9 Certified, many candidates treat it as the first half of a two-part journey rather than a standalone destination. If you're weighing whether that investment makes sense for your career stage, our analysis in Is the OG0-091 Certification Worth It? Complete ROI Analysis 2026 covers the decision in more depth, and OG0-091 Jobs looks at where this credential shows up in hiring requirements.

Registration and Cost Mechanics

For 2026, candidates can expect an exam booking fee of $375 or a retail voucher fee of $400, depending on how registration is arranged. Both routes go through Pearson VUE, with the flexibility to sit the exam at an authorized test center or remotely through OnVUE. There are no prerequisites to register, which simplifies the process considerably compared to certifications that require sponsor endorsement or verified work experience.

A full cost breakdown, including how voucher pricing compares to direct booking and what additional expenses (like study materials) typically look like, is available in OG0-091 Certification Cost 2026: Complete Pricing Breakdown. If you're still deciding whether this is the right certification to pursue at all, start with What Is OG0-091 Certification? for the basics, or head to our practice test platform to gauge your current readiness before committing to a registration date.

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