Anthropic interview questions

52 questions33 coding5 system design14 behavioral10 freeUpdated

This is every question in the Anthropic guide, in one list: 33 coding problems, 5 system designs and 14 behavioral questions, drawn from what candidates report about Anthropic interviews.

Each row shows the round it comes from and links to the lesson that works through it. 10 are free to read in full. The other 42 are Premium, and here you still see their round, difficulty and topic, so you know what you're walking into.

Anthropic coding interview questions

33 problems, in the order the guide teaches them. The 9 tagged OA are covered in the online assessment lessons. Each lesson gives the full problem, a worked solution and the follow-ups interviewers tend to add.

1Claude Config Store: In-Memory Key-Value DatabaseFreeOAMediumThe Online Assessment (OA)
2API Credit Ledger: In-Memory Banking SystemFreeOAMediumThe Online Assessment (OA)
3Model Weights Registry: Versioned Inventory SystemFreeOAMediumThe Online Assessment (OA)
4Prompt Response CacheFreeOAMediumThe Online Assessment (OA)
5Cloud File Store: Per-User Quotas and Ownership ChecksFreeOAMediumStateful Class Builds
6Conversation History Store: Filter, Expire, RestoreFreeOAMediumStateful Class Builds
7Package Manager: Install, Resolve, Then Refuse the ConflictFreeOAHardStateful Class Builds
8Build System: A DAG, A Cache, Then Parallel WorkersFreeOAHardStateful Class Builds
9Text Editor: Insert, Delete, Then Undo EverythingFreeOAMediumStateful Class Builds
10Premium medium problemCodingMediumConcurrency & Systems
11Premium medium problemCodingMediumConcurrency & Systems
12Premium medium problemCodingMediumConcurrency & Systems
13Premium medium problemCodingMediumConcurrency & Systems
14Premium medium problemCodingMediumConcurrency & Systems
15Premium medium problemCodingMediumAsync Code & Retries
16Premium medium problemCodingMediumAsync Code & Retries
17Premium medium problemCodingMediumAsync Code & Retries
18Premium medium problemCodingMediumTokenizers & Text at Scale
19Premium medium problemCodingMediumTokenizers & Text at Scale
20Premium hard problemCodingHardTokenizers & Text at Scale
21Premium medium problemCodingMediumData Structures & Parsing
22Premium hard problemCodingHardData Structures & Parsing
23Premium medium problemCodingMediumData Structures & Parsing
24Premium medium problemCodingMediumData Structures & Parsing
25Premium medium problemCodingMediumCaches From Scratch
26Premium hard problemCodingHardCaches From Scratch
27Premium medium problemCodingMediumCaches From Scratch
28Premium medium problemCodingMediumCaches From Scratch
29Premium hard problemCodingHardCaches From Scratch
30Premium easy problemCodingEasyCore Algorithms
31Premium easy problemCodingEasyCore Algorithms
32Premium medium problemCodingMediumCore Algorithms
33Premium medium problemCodingMediumCore Algorithms

Anthropic system design interview questions

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

#Question
1Design LLM Inference ServingFree
2Design RAG & Retrieval (Premium)
3Design a Distributed Training Platform (Premium)
4Design an Agentic Tool-Use System (Premium)
5Design the LLM API & Rate Limiting (Premium)

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

Anthropic behavioral interview questions

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

Why Anthropic, and the mission (3)

All 3 are Premium

AI safety, and holding light and shade (3)

All 3 are Premium

Ethical judgment under pressure (2)

All 2 are Premium

High-trust, low-ego collaboration (2)

All 2 are Premium

Changing your mind, and empiricism (2)

All 2 are Premium

Impact and ownership (2)

All 2 are Premium

Read the Anthropic behavioral questions

See all 52 Anthropic questions by name

Premium opens the 42 locked questions on this page, each with the full prompt and a worked answer, and every other lesson in all 100 company guides.

Common questions

How many questions are in the Anthropic interview guide?

52: 33 coding problems, 5 system designs and 14 behavioral questions. The guide was last updated in November 2026.

Which rounds do these Anthropic interview questions come from?

Of the 33 coding problems, 9 come from the online assessment and 24 from the coding rounds. The 5 system designs and 14 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 Anthropic interview questions are free?

10 of the 52 are free to read in full, marked Free in the list. The other 42 come with Premium, which also opens all 100 company guides.