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OpenAI Practice
100 verified questions from 200+ reports · Updated September 2026
Read the full OpenAI interview guide
Interview Type
OA
90 min · Async
Coding
Phone & Onsite
System Design
60 min · Live
Tech Deep Dive
60 min · ML focus
Behavioral
45 min · Live
Questions
Most asked (24)
All (40)
24 shown · OpenAI Coding
#1
Refreshed Sep 2026
Coding
Hard · 67x
Last reported Aug 2026
Disease/Epidemic Spreading Simulation
#2
Refreshed Sep 2026
Coding
Hard · 47x
Last reported Aug 2026
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GPU Credit Management System
#3
Refreshed Sep 2026
Coding
Hard · 44x
Last reported Aug 2026
Key-Value Store Design and Implementation
#4
Refreshed Sep 2026
Coding
Hard · 37x
Last reported Aug 2026
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Transformer Debugging
#5
Refreshed Sep 2026
Coding
Hard · 34x
Last reported Feb 2026
In-Memory SQL / Database Implementation
#6
Refreshed Sep 2026
Coding
Hard · 32x
Last reported Jul 2026
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#7
Refreshed Sep 2026
Coding
Hard · 29x
Last reported Aug 2026
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#8
Refreshed Sep 2026
Coding
Hard · 21x
Last reported Jun 2026
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#9
Refreshed Sep 2026
Coding
ML Coding
Hard · 20x
Last reported May 2026
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#10
Refreshed Sep 2026
Coding
Hard · 19x
Last reported Sep 2026
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#11
Refreshed Sep 2026
Coding
Hard · 18x
Last reported Aug 2026
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#12
Refreshed Sep 2026
Coding
ML Coding
Hard · 17x
Last reported Jul 2026
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#13
Refreshed Sep 2026
Coding
Hard · 16x
Last reported May 2026
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#14
Refreshed Sep 2026
Coding
Hard · 15x
Last reported Sep 2026
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#15
Refreshed Sep 2026
Coding
Hard · 13x
Last reported Aug 2026
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#16
Coding
ML Coding
Medium · 7x
Last reported May 2026
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#17
Coding
ML Coding
Medium · 7x
Last reported Apr 2026
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#18
Coding
Medium · 7x
Last reported Apr 2026
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#19
Coding
ML Coding
Medium · 5x
Last reported Jul 2026
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#20
Refreshed Sep 2026
Coding
Medium · 4x
Last reported Jul 2026
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#21
Stale
Coding
Medium · 4x
Last reported Nov 2025
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#22
Stale
Coding
Medium · 4x
Last reported Apr 2025
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#23
Refreshed Sep 2026
Coding
Medium · 4x
Last reported Apr 2026
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#24
Coding
Medium · 4x
Last reported Jul 2026
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