Anthropic Online Assessment Questions
14+ real Anthropic OA questions from candidate reports. Sourced from 1Point3Acres, Blind, Glassdoor, Reddit, and LeetCode. Browse by year to find the most recent data, or view the full OA question set filtered on the main company page.
Browse Anthropic OA by Year
Recent Anthropic OA Sample Questions
Anthropic Software Engineer Interview OA and Phone Screen
I noticed not many people have shared their experience interviewing with Anthropic. I'm currently going through the process and just went through the phone screen, so I figured I'd share and help out.
anthropic fellows two-round codesignal online assessment review for machine learning intern
分享一下 人类学Fellows 的两轮 CodeSignal 面经，希望对后面申请的人有帮助 四月中申请的前几天收到， 第一关做完后马上收到第二关于是接着给他做完了 具体time line 如下 然后都是proctored开摄像头麦克风 以下内容需要积分高于 188 您已经可以浏览 第一轮是 90 分钟的 general coding assessment，我遇到的是一个偏系统/网络模拟的 Python 题，大方向是实现一个简化版的 DNS resolver。题目会分成多个 step，每一步对应一组 unit tests，需要逐步实现功能。整体不是传统 LeetCode 那种纯算法题，更像是给你一个 mini codebase 和清晰 spec，然后要求你按测试一步步补全逻辑。 难度体感上，我觉得第一轮大概是 LeetCode Medium 左右，但不是算法难，而是工程逻辑和边界处理比较多。前面几步比较 straightforward，比如字符串 normalize、基本递归/迭代查询；后面会逐渐加入更多情况，例如 alias / fallback / error hand...
anthropic online assessment and interview timeline for software engineer role
Recipe Manager 3号做的oa 600/600 今天才收到邮件schedule recruiter call。一度以为默拒了。 QQ：感觉现在面的组和background并没有特别match，和recruiter说换个组面可以吗？
anthropic online assessment experience for software engineer fulltime role
以下内容需要积分高于 200 您已经可以浏览 我的prompt是The project will be a toy simulation of an app that won't require anything except the standard library of your chosen programming language。一开始我还以为是in-memory DB，但实际上最后是cloud storage。我觉得现在OA可能变成了统一的prompt，然后题目是随机的。 题目跟hack2hire上面一模一样。本身没有什么复杂的算法，但如果level 1时候的OOP还有数据结构没有设计好，后面可能就需要refactor，会浪费很多时间
anthropic online assessment: debugging extremely randomized tree with numpy
本帖最后由 小鬼佳佳 于 2026-5-30 21:38 编辑 numpy debug 是实现一个extremely randomized tree 的numpy debug. 难度比第一轮大。第一轮是dns solver. 求加米看 take home。 回来再分享take home 题。 求一个5h takehome。
Anthropic Online Test Interview Experience for SDE Position
This post was last edited by Jing666 on 2025-10-3 15:25. Looks like I failed. Coding: Q4, interview question: distributed worker find mode, but I didn't have time to write the follow-up find median, o
Anthropic SDE Online Test Experience and C++ Interview Language Query
This post was last edited by Anonymous on 2025-10-05 18:44. The questions are below. Has anyone had an interview using C++? The HR called and told me I had to choose a language beforehand. I'm more fa
Banking System (Online Assessment)
System Overview You need to build a bank system that runs in the computer's memory. There are **4 levels** to this problem. You must finish one level to move to the next. 1. **Level 1:** create acco
Cloud Storage System (Online Assessment)
Problem Summary Your goal is to build a simple, in-memory cloud storage system. This system will store files and their details, such as name and size. **Important:** This system runs entirely in me
Recipe Manager (Online Assessment)
Problem Summary You need to build a recipe management system that runs in memory. The problem has **4 levels**. Each level adds new features to the previous one: 1. **Level 1**: Basic actions (Crea
Most Common OA Topics
Anthropic OA Format and Platform
The Anthropic online assessment is delivered through a proctored online platform, most commonly HackerRank. Candidates receive the OA link by email after passing an initial resume review. The coding section typically contains 2 to 3 algorithmic problems with a 70 to 110 minute time limit.
Some Anthropic teams include an additional work simulation section that tests judgment and decision-making rather than coding ability. This section is not present for all roles. Check the LeakCode question database filtered by role type to see what past candidates for your specific role reported.
FAQ
Does Anthropic have an online assessment?
Yes. Anthropic uses an OA as the first technical screen for most engineering and technical roles. It is typically sent after a resume review and before any human interviews. The format has remained consistent across recent hiring cycles.
How hard is the Anthropic OA?
Based on candidate reports, Anthropic OA problems range from LeetCode medium to hard. Expect at least one problem that requires an efficient algorithm (not brute force) to pass all test cases within the time limit.
Where do these OA questions come from?
All questions in the LeakCode database are sourced from actual candidate reports on 1Point3Acres, Blind, Glassdoor, Reddit, and LeetCode. They are not AI-generated. Each question links to its source where the original report is public.
Related: Anthropic All Questions · All OA Questions · Browse Companies · Data Sources