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xAI interview questions

42 questions25 coding2 system design15 behavioral4 freeUpdated

This is every question in the xAI guide, in one list: 25 coding problems, 2 system designs and 15 behavioral questions, drawn from what candidates report about xAI interviews.

Each row shows the round it comes from and links to the lesson that works through it. 4 are free to read in full. The other 38 are Premium, and here you still see their round, difficulty and topic, so you know what you're walking into.

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xAI coding interview questions

25 problems, in the order the guide teaches them. Each lesson gives the full problem, a worked solution and the follow-ups interviewers tend to add.

1In-Memory Key-Value Store With Nested TransactionsFreeCodingMediumStateful Components
2Stateful Iterator With Checkpoint and ResumeFreeCodingMediumStateful Components
3Multi-Level Rate Limiter Over a Timestamp StreamFreeCodingMediumStateful Components
4Premium medium problemCodingMediumThe Implementation Round
5Premium medium problemCodingMediumThe Implementation Round
6Premium medium problemCodingMediumThe Implementation Round
7Premium hard problemCodingHardThe Implementation Round
8Premium medium problemCodingMediumCaches and Stores in Levels
9Premium medium problemCodingMediumCaches and Stores in Levels
10Premium hard problemCodingHardCaches and Stores in Levels
11Premium medium problemCodingMediumEvent Logs and Streams
12Premium medium problemCodingMediumEvent Logs and Streams
13Premium easy problemCodingEasyEvent Logs and Streams
14Premium medium problemCodingMediumShort Algorithm Problems
15Premium medium problemCodingMediumShort Algorithm Problems
16Premium medium problemCodingMediumShort Algorithm Problems
17Premium medium problemCodingMediumLLM Inference From Scratch
18Premium medium problemCodingMediumLLM Inference From Scratch
19Premium medium problemCodingMediumLLM Inference From Scratch
20Premium medium problemCodingMediumLLM Inference From Scratch
21Premium hard problemCodingHardLLM Inference From Scratch
22Premium easy problemCodingEasyThreads and Race Conditions
23Premium medium problemCodingMediumThreads and Race Conditions
24Premium hard problemCodingHardThreads and Race Conditions
25Premium medium problemSystem designMediumDesign a File Upload Feature

xAI system design interview questions

2 designs, each worked end to end in its own lesson, from requirements to the architecture and its trade-offs.

#Question
1Design an LLM Training SystemFree
2Design a File Upload Feature (Premium)

A lock means the design is named here and its walkthrough is Premium.

xAI behavioral interview questions

15 questions, grouped by what the interviewer is testing. The lesson explains why each one gets asked and what a strong answer covers.

Extreme ownership and exceptional work (3)

All 3 are Premium

First-principles reasoning (3)

All 3 are Premium

Agency and speed under intensity (3)

All 3 are Premium

A contrarian call you can defend (3)

All 3 are Premium

Genuine mission alignment (3)

All 3 are Premium

Read the xAI behavioral questions

See all 42 xAI questions by name

Premium opens the 38 locked questions on this page, each with the full prompt and a worked answer, and every other lesson in all 100 company guides.

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Common questions

How many questions are in the xAI interview guide?

42: 25 coding problems, 2 system designs and 15 behavioral questions. The guide was last updated in November 2026.

Which rounds do these xAI interview questions come from?

Of the 25 coding problems, 24 come from the coding rounds and 1 from the system design lessons. The 2 system designs and 15 behavioral questions come from the system design and behavioral rounds. Every row in the list carries its round, so you can start with the one you have booked.

Which xAI interview questions are free?

4 of the 42 are free to read in full, marked Free in the list. The other 38 come with Premium, which also opens all 100 company guides.