Anthropic: the loop, round by round

A Java loop is a coding quiz and a design chat. Anthropic's Applied AI loop, as reported, adds a fictional buyer: you run a discovery call, and that round reportedly filters more candidates than any coding stage.

as reported 2026-09-30 6 rounds & features 4 dated sources confidence: first-party pages + two dated secondary sources

⚠️ Hiring facts change fast. Everything below is as reported on 2026-09-30, each line with its source and that source's date. Confirm the loop, the format and the tool rules with your own recruiter before you rely on any of it.

The loop

Six things to know about Anthropic's process. Tap each card: you get what the round is, what it evaluates and exactly which dated source says so.

Anthropic, one tap per round

👉 Predict first, then tap. Every claim in the readout names its source and the date of that source.

Recruiter screen

30 min

Technical phone screen

60 min

Take-home / extended build

3-4 hours

Customer-discovery simulation ★

60-90 min

Virtual onsite

4-5 hours

AI use in live interviews

the stated rule

Tap a round above.

The notable format. Customer-discovery simulation (★): Perspective reports you run a discovery call with an interviewer playing the buyer, and that pass or fail here 'correlates more strongly with offers than any other round'; it estimates the round filters roughly 60% of candidates who pass the coding stages. Source: Perspective AI (published 2026-05-29).

What this page can't tell you

Perspective is a secondary source built from candidate reports, so the stage durations are reports, not policy. The careers page and the AI-use guidance are first-party.

How to prepare, with links on this site

Build a Claude-powered app against a brief, with evals. Flagship 1: RAG + agent service
Evaluation harness thinking. LLM evaluation
Tool orchestration: the MCP exercise. Exercise: an MCP server
See how this fits your target role: Role map & readiness.

Ask your recruiter

Which stages of my loop allow Claude, and which do not?
Is there a customer-discovery simulation for my role?

Check yourself

Sources

Perspective AI — Anthropic Applied AI Engineer Interview Process — published 2026-05-29
Anthropic — Careers (the interview process) — retrieved 2026-09-30
Anthropic — How to collaborate with Claude during our hiring process — published 2025-07-10
Sundeep Teki — The Definitive Guide to Forward Deployed Engineer Interviews in 2026 — published 2026-01-15

"published" is the date on the article; "retrieved" is the day this page's author read an undated page. A source that changes after that date is not reflected here.