Message Batches API Interview Questions | Anthropic-API | NextRound

1What's the max batch size and how do you retrieve results? — expected answer: results come back via a results_url on the batch object; you poll processing_status until it's doneIntermediate

2When would you use the Batches API instead of regular Messages API calls? — expected answer: async processing of large volumes, 50% cost reduction, non-time-sensitive workloads like bulk evaluation or dataset generationIntermediate

3Is the Batches API eligible for Zero Data Retention? — No — batch processing requires 29-day retention for async storage, so it's not ZDR-eligibleIntermediate

4What statuses can a batch request have? — succeeded, errored, canceled, expired, and in_progressIntermediate