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Prep plan
Updated weekly · Last refresh Aug 30

OpenAI AI Engineer Interview Questions

The questions to prepare for a OpenAI AI Engineer interview. Questions from real interview reports rank first. Updated weekly.

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1
CodingStart here. 12 questions · ~108 min
Exponential Backoff with JitterMedium
Practice

Simulate resilient OpenAI API retries using exponential backoff, jitter, retryable status codes, and a maximum retry limit.

OpenAI
Prompt Hash Response CachingEasy
Practice

Cache OpenAI Responses API results by SHA-256 prompt hash with LRU eviction and count avoided model calls.

OpenAI
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2
Generative AI & LLMs12 questions · ~108 min
Compare Top-p and Top-k SamplingEasy

Explain how top-p and top-k sampling differ, and when each changes LLM output quality and diversity.

OpenAI
Choose Between RAG and Fine-TuningEasy

Compare RAG and fine-tuning, and decide when each is the better fit for an LLM product.

OpenAI
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3
System Design12 questions · ~108 min
Design a Low Latency RAG PlatformHard
Recently asked

Design a low latency RAG system over millions of documents, with scalable retrieval, ranking, generation, and production monitoring.

low latencyscalabilityRAG architectureOpenAI
Design a low-latency RAG assistant for OpenAI API docs and incident runbooksMedium

Design a high-QPS, low-latency RAG system with embeddings, vector search, serving, and eval under strict cost and hardware limits.

OpenAI
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4
Model Evaluation11 questions · ~99 min
Build an Evals SuiteMedium

Evaluates how you design tests to measure and prevent regressions in LLM summarization quality.

OpenAI
A/B Test Two PromptsMedium

Assesses your experimental design for measuring prompt changes impact on real user outcomes.

OpenAI
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5
Behavioral & Leadership3 questions · ~27 min
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