OpenAI OA questions,
58 reported by real candidates.
Every OpenAI online assessment question candidates have reported, most recent October 2026. The pattern that shows up most: breadth first search.
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October 2026 (10)
Online Chess Move Validation
Count Friend Circles
Plant Infection Simulation, Part 4: Death Countdown
Memory Allocator
Count Routes Through Four Shop Types
Largest Microorganism After Consumption
Chatbot Away-Status Refactor
array
Checkpointed Dynamic Sequence
queue
Durable Work Queue Operations
design
Incremental Hard Attention with a KV Cache
September 2026 (22)
queue
Durable Work Queue with Dependencies
Leaves Remaining After Wind Gusts
Invert or Blur an Image
greedy
Optimal First-Player Card Score
graph
Network Endpoint or Cycle Boundary
Simplify a Quadratic Expression
Largest Square of Ones
array
Minimum-Cost Color Sequence
Repair One Movement Instruction
breadth first search
Prefix Matrix Products and Autograd
Modal Lock and Fair Modal Lock
simulation
GPU Credit Ledger with a Negative-Balance Failure State
Evaluate Noisy Annotators
One-Nearest-Neighbor Classification with Manhattan Distance
Sparse Plant Infection Simulation
Poker Deal and Hand-Winner Simulation
Iterate Canonical IPv6 Addresses
GPU Credit Ledger
Determine the Winner of Three-Card Hands
queue
Dependency-Aware Agent Task Scheduler
Aggregate Machine Topology
In-Memory Key-Value Store Operations
August 2026 (1)
July 2026 (17)
Segmented Durable Key-Value Store
string
Durable String Key-Value Store
CIDR IPv4 Range Iterator
IPv4 Forward Iterator
two pointers
IPv4 Reverse Iterator
Convert an IPv4 Range to Minimal CIDR Blocks
Toy Language Generic Return-Type Inference
Count Matching Regions in Two Binary Grids
Largest Square Subgrid Under a Sum Limit
sorting
Backpropagation Through Sort and Median
Message Event Aggregation
Streaming Entropy, Part 1: Batch Entropy
Streaming Entropy, Part 2: Numerically Stable Entropy
Streaming Entropy, Part 3: Block-wise Entropy
Streaming Entropy, Part 4: Stable Streaming Entropy
Versioned Social Network
breadth first search
DSA Round: Maximum Score Grid Path
May 2026 (5)
September 2024 (1)
⏵ Beyond the OA
OpenAI also has 11 LeetCode problems reported from its interviews, with the topics it leans on most.
⏵ The honest play
You've seen OpenAI's questions.
Yours might be the one not on the list.
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