Many-Shot Prompting: A Practical Guide to In-Context Learning at ScaleBy Shubhangi Upasani, Chen Wu, Jay Rainton, Bo Li, Urmish Thakker, Changran Hu, Qizheng Zhang / April 22, 2026 TL;DR: What We Found We ran thousands of experiments on many-shot in-context learning (ICL) across multiple benchmarks, model sizes, and prompting strategies. Here are the headline findings: