xAI Coding Interview Questions
These are the 15 xAI coding interview questions AceOffer has reconstructed from candidate reports, sorted by how often each was reported. 4-Hour Take-Home Project (Twitter Insight Platform and Other Prompts) leads at 10×. Every question shows when it was last reported; the catalog refreshes monthly.
Part of the full catalog of xAI interview questions, covering every round.
AceOffer is not affiliated with, endorsed by, or sponsored by xAI. Questions are reconstructed from interview experiences candidates shared, not from xAI materials.
Key facts
- •15 distinct coding questions indexed
- •45 candidate reports across those questions
- •Most reported: 4-Hour Take-Home Project (Twitter Insight Platform and Other Prompts) — 10× (last seen January 2026)
- •Refreshed monthly · last updated October 2026
Which xAI rounds ask coding questions?
xAI draws coding questions from the rounds below. Counts are distinct questions, not times asked.
Most reported: In-Memory Database / KV Store with Transactions — 8×
Most reported: Process vs Thread (and the Risks of Shared Memory) — 4×
Most reported: 4-Hour Take-Home Project (Twitter Insight Platform and Other Prompts) — 10×
Which xAI coding questions get asked most?
Sorted by candidate-report frequency. Click any question for the full breakdown.
| Question | Round | Reported | Last seen |
|---|---|---|---|
| 4-Hour Take-Home Project (Twitter Insight Platform and Other Prompts) | OA | 10× | January 2026 |
| In-Memory Database / KV Store with TransactionsFree | Coding | 8× | April 2026 |
| Process vs Thread (and the Risks of Shared Memory) | Phone Screen | 4× | January 2026 |
| LRU Cache (incl. Weighted Variant) | Coding | 4× | February 2026 |
| Parallelized / Multi-threaded Sorting | Coding | 3× | January 2026 |
| BankAccount Race Condition (Find & Fix) | Coding | 3× | November 2025 |
| Distributed Token Bucket Rate Limiter (Coding Round) | Coding | 2× | April 2026 |
| Autocomplete Input Box (Local Data, Offline-Safe) | Coding | 2× | June 2026 |
| Concurrent Job / Task Scheduler | Coding | 2× | October 2025 |
| Radix Cache / Trie vs Radix Tree | Coding | 2× | September 2025 |
| Palindromes in Decimal and Binary | Phone Screen | 1× | October 2024 |
| Twitter Spaces Active Hours Tracking | Coding | 1× | January 2026 |
| Flatten & Unflatten Nested Structure | Coding | 1× | February 2026 |
| Distributed Matrix Multiplication (Data Parallel / FSDP) | Coding | 1× | April 2026 |
| GPU Node Failure Detection (Group Testing) | Coding | 1× | December 2025 |
FAQ
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