PTE Academic and the Duolingo English Test are computer-delivered English assessments, but “computer-delivered” does not mean “the same vocabulary test.” PTE Academic organizes named question types within speaking and writing, reading, and listening parts. The Duolingo English Test adapts the items presented to the test taker and mixes compact receptive tasks with speaking, writing, interactive work, and samples.
This article compares language demands, not prices, acceptance, scores, or which exam is easier. Check those practical questions directly with the institution and provider before choosing.
Use the PTE Academic vocabulary hub, Duolingo English Test vocabulary hub, and Exam English hub for separate routes.
Shared knowledge, different retrieval
Both exams reward:
- vocabulary breadth for recognizing common and academic language;
- vocabulary depth: collocation, connotation, word family, and grammar;
- spelling and grammatical endings;
- paraphrase recognition;
- evidence-based description;
- clear organization in speaking and writing;
- appropriate scope and certainty.
The difference lies in retrieval. PTE practice often builds stable routines for named operations such as describing an image, retelling a lecture, filling a blank, or writing from dictation. DET practice must also prepare you to shift quickly because adaptive and interactive tasks can change the source, response length, and communicative purpose.
Comparison by lexical job
| Lexical job | PTE Academic | Duolingo English Test |
|---|---|---|
| Recognize words | Reading/listening options and blanks | Rapid recognition and contextual selection |
| Preserve wording | Repeat Sentence, Write from Dictation | Listen and Type and other exact-input work |
| Describe images | Describe Image | Photo description in speaking or writing |
| Develop ideas | Essay and source-based tasks | Prompt responses, Interactive Writing, samples |
| Build discourse | Summaries, Reorder Paragraphs | Interactive Reading and extended responses |
The correct method starts with the operation: preserve, choose, transform, describe, summarize, or develop.
Image vocabulary: describe before you interpret
Both exams can ask you to produce language from visual information. The visible evidence may differ, but the discipline is the same.
For a data display:
“The proportion rose steadily from the first period to the third, before remaining broadly stable.”
For a photograph:
“Two people are examining a map beside a station entrance, while a bus is approaching in the background.”
Now separate support levels:
- visible: a person is holding a folder;
- plausible but uncertain: the group may be preparing for a meeting;
- unsupported: the manager is about to dismiss an employee.
The last claim invents identity, relationship, and future action. A sophisticated verb cannot compensate for absent evidence.
Useful visual language is functional:
- location: in the foreground, beside, adjacent to;
- comparison: slightly higher than, the largest share;
- change: rose gradually, fluctuated, leveled off;
- caution: appears to, may indicate;
- boundary: the image/chart does not establish why.
Exact language: do not paraphrase a reproduction task
PTE Repeat Sentence and Write from Dictation make sequence, endings, and word boundaries important. DET listening-and-typing work similarly requires close attention to supplied language. These are not moments to show synonym range.
Train phrases as sound-and-grammar units:
- the findings have not yet been published;
- participants were asked to complete;
- a significant proportion of respondents;
- could be attributed to several factors.
After exact practice, transform the phrase:
Original: “The findings have not yet been published.”
Faithful paraphrase: “The results remain unpublished.”
Changed meaning: “The researchers decided not to publish the findings.”
The final sentence invents a decision. This contrast develops both accurate reproduction and careful paraphrase.
Understanding is only the first step.
Lyra Practice helps you retrieve and use high-value workplace expressions in realistic situations until they feel natural.
Start a practice session →Reading vocabulary: context beats familiarity
In blanks and interactive reading, a familiar word may be wrong because it does not fit the grammar or discourse.
“The committee postponed the vote ___ further evidence became available.”
Until establishes an endpoint. During needs a noun phrase, and because would need a causal clause whose meaning is different.
Use four checks:
- grammar: what form can occupy the gap?
- collocation: what combinations are conventional?
- local meaning: what does the sentence claim?
- discourse: how does it connect to earlier and later information?
For paragraph work, track reference chains:
“A second trial used a larger sample. This change reduced uncertainty, although one limitation remained.”
This change must point back to the larger sample. Although announces a concession. Those signals matter in PTE Reorder Paragraphs and in DET interactive passage work.
Speaking: stable frames, flexible content
PTE named question types can benefit from small functional frameworks, provided they do not become memorized filler. A chart response might use:
identify → select two features → compare → limit
A lecture retell might use:
topic → central claim → key support → conclusion
DET speaking may shift among photo description, extended prompt response, interactive exchange, and a sample. The transferable frame is:
answer → relevant detail → explanation
Example:
“I prefer project-based classes because they make abstract ideas testable. In one statistics course, collecting our own data revealed sampling problems that a textbook example had hidden.”
The second sentence earns sampling problems by explaining the experience. Adding ornamental words without relevant detail would not improve the answer.
Interactive follow-ups create another demand: listen to what changed. If the first question asks for a preference and the next asks about a disadvantage, repeat neither your opening nor your memorized story. Use contrast and qualification:
“The main drawback, however, is coordination. A project can become inefficient when responsibilities are not assigned clearly.”
Writing: compression versus extension
PTE Academic includes tasks where source material must be compressed faithfully. DET writing includes short and extended production, and Interactive Writing requires a later response to build on an earlier one.
Compression asks: what can be removed without losing the central relationship?
Source logic: local tree cover reduces heat exposure, but the evidence is strongest in densely built districts.
Summary:
“Tree cover is associated with lower heat exposure, particularly in densely built districts.”
Extension asks: what new dimension can be added without contradicting the first answer?
First answer: tree planting should be prioritized in hot neighborhoods.
Extension:
“Priority should also depend on maintenance capacity, because newly planted trees provide little long-term benefit if watering and replacement are unfunded.”
Both operations require hierarchy. Compression selects. Extension adds.
Collocation and word-family training
Use examples from the two Lyra Practice hubs to keep a four-column review table:
| Headword | Family | Natural pattern | Boundary |
|---|---|---|---|
| vary | variation, variable | vary considerably; variation in | change across cases |
| infer | inference | infer X from Y | reader concludes |
| allocate | allocation | allocate resources to | assign for a purpose |
| plausible | plausibility | plausible explanation | believable, not proven |
Then practice each item through the relevant route in the PTE Academic vocabulary hub or DET vocabulary hub in more than one mode:
- recognition: choose the fitting form;
- exactness: hear and reproduce the phrase;
- description: use it only if evidence supports it;
- production: adapt it to a new prompt.
This is more robust than maintaining unrelated “PTE words” and “DET words.”
Common transfer mistakes
- Using data-chart phrases for every photograph.
- Inventing causes from a visual pattern.
- Paraphrasing when exact wording is required.
- Treating a real-looking letter string as a real word without confidence.
- Filling a blank by topic while ignoring grammar.
- Repeating the first answer during an interactive follow-up.
- Using a fixed introduction that consumes response time but adds no content.
- Calling one example proof of a universal rule.
How to choose your emphasis
If you are preparing for PTE Academic, use the PTE Academic vocabulary hub to make a task matrix and practice each named question type. Check Pearson’s current instructions for interface details, but keep language responsive to the source.
If you are preparing for the Duolingo English Test, use the DET vocabulary hub to practice rapid switching, adaptive uncertainty, concise retrieval, and meaningful extension across follow-ups. Use the official practice experience only to understand the current interface.
For both, use Lyra Practice’s task guides between timed sessions to summarize source material in your own words, describe data cautiously, and keep an error log. Test familiarity helps you display language; it does not replace language growth.
Sources
- PTE Academic test format — Pearson
- Duolingo English Test official guide
- Duolingo English Test structure
Related
- PTE speaking vocabulary by question type
- PTE reading vocabulary by question type
- Duolingo English Test speaking vocabulary
- Duolingo English Test writing vocabulary
PTE is a trademark of Pearson. The Duolingo English Test is a trademark of Duolingo. Lyra Practice is not affiliated with or endorsed by Pearson or Duolingo.