The SI ArenaLong-form notes on building systems that stay up — distributed systems, data infrastructure, and the engineering decisions behind them, including the ones that turned out to be wrong.https://thesiarena.com/en-usAstroDesigned agent memory stopped paying off, and the benchmarks missed ithttps://thesiarena.com/post/designed-agent-memory-stopped-paying-off/https://thesiarena.com/post/designed-agent-memory-stopped-paying-off/Four papers published in October 2026 found that designed agent memory stopped beating a plain context window with current models, and that the standard benchmarks could not have told you.Sat, 24 Oct 2026 00:00:00 GMTengineeringagent-memoryevaluationagent-benchmarksllm-inferenceYasser