Anthropic System Design Interview Questions
These are the 10 Anthropic system design interview questions AceOffer has reconstructed from candidate reports, sorted by how often each was reported. Inference API System Design leads at 39×. Every question shows when it was last reported; the catalog refreshes monthly.
Key facts
- •10 distinct system design questions indexed
- •99 candidate reports across those questions
- •Most reported: Inference API System Design — 39× (last seen August 2026)
- •Refreshed monthly · last updated August 2026
Which Anthropic rounds ask system design questions?
The Anthropic rounds below are where these questions come up. Counts are distinct questions, not times asked.
Most reported: Inference API System Design — 39×
Which Anthropic system design questions get asked most?
Sorted by candidate-report frequency. Click any question for the full breakdown.
| Question | Round | Reported | Last seen |
|---|---|---|---|
| Inference API System Design Design an HTTP API service that exposes a Large Language Model (LLM) sampling/inference function to users. The underlying inference function takes a… | System Design | 39× | August 2026 |
| Prompt Playground System DesignFree Design a prompt engineering playground platform similar to Anthropic Console. This is a full-stack design covering product features, UI/UX, backend architecture, data… | System Design | 15× | August 2026 |
| ML Model Distribution / Deployment System Design Design a distributed system to download a large ML model (200GB–500GB) from an external model repository and distribute it as quickly as… | System Design | 12× | August 2026 |
| Batch Inference System Design Design a batch inference serving system for an LLM backend. Users (or downstream services) submit individual inference requests via an HTTP API;… | System Design | 11× | July 2026 |
| GPU Cluster / Inference Infrastructure System Design Design an inference infrastructure system for a GPU cluster serving an LLM API (e.g., Claude API / Claude.ai). The core problem is… | System Design | 7× | September 2025 |
| Chat System Design (1-on-1) Design a scalable, real-time 1-on-1 (one-to-one) chat system. The scope is explicitly limited to single-device (web) usage between two individual users —… | System Design | 6× | July 2026 |
| System Design Doc Review A newer Anthropic onsite round (first observed April 2026) in which the candidate is given a pre-written system design document and asked… | System Design | 3× | April 2026 |
| Roofline Model Analysis A dedicated 'Performance Round' at Anthropic onsite (observed for ML infra and backend infra roles). The round is neither traditional coding nor… | System Design | 3× | December 2025 |
| Stream Large File to Many Machines A large file (e.g., an ML model or data artifact) resides in cloud storage. You need to distribute it to 1000 servers… | System Design | 2× | June 2026 |
| Amusement Park / Sharing System Product Design Design a sharing system for an amusement park application. The interviewer provides a Google Doc at the start containing a pre-drawn architecture… | System Design | 1× | April 2026 |
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