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Show HN: I ran every Claude agent turn through the Batch API

  • erans--Sandler.co.il
  • published date: 2026-04-27 18:34:45 UTC

I built a tiny Python REPL to answer a dumb-but-useful question:What happens if every turn in an agent loop goes through Anthropic’s Batch API instead of the normal synchronous endpoint?The motivation was cost. Batch API is 50% off, which sounds very attracti…

What does an agent harness feel like when every model turn goes through Anthropic’s Batch API instead of the synchronous endpoint? Batches are 50% off. For anyone burning real money on agents (eval … [+6502 chars]