Originally published on AI Tech Connect.
Why this question is on every 2026 rubric There is one AI system-design question that keeps turning up in interview reports this year, and it is short enough to fit in a text message: design an inference batching system for a single GPU that handles up to 100 inputs per batch, while users submit requests synchronously and wait for the result. As of September 2026 it is widely reported as an Anthropic system-design question. The WashU McKelvey guide to AI engineer interview questions, published on 17 September 2026, lists it first among the recurring questions across 2026 loops and attributes it to Anthropic; Exponent's guide to the Anthropic system-design round quotes the same setup almost word for word and describes a 50 to 55 minute round that assesses abstraction, trade-off…
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