{"type":"post","id":"envopt-automated-optimization-of-agent-environments-cuts-claude-99dbcd","slug":"envopt-automated-optimization-of-agent-environments-cuts-claude-99dbcd","title":"EnvOpt: automated optimization of agent environments cuts Claude Haiku 4.5 cost 72.7%","description":"EnvOpt is a research method for automatically optimizing the information environment in which an agent operates, alongside its model and harness.","retrieval_nugget":"EnvOpt is a research method for automatically optimizing the information environment in which an agent operates, alongside its model and harness. On AutomationBench, its authors report 72.7% lower cost for Claude Haiku 4.5 and a 14.34% higher pass rate. For teams building agents, the structure of shared operational context becomes a measurable engineering target.","published_at":"2026-11-06","updated_at":"2026-11-06","record_date":"2026-11-06","date_kind":"published_at","topics":["claude"],"entities":["EnvOpt","Claude Haiku 4.5","Opus 5","Meta-Harness","AutomationBench"],"related_patterns":["scientific-agents-need-artifact-evidence"],"novelty_label":"new_fact","what_changed":"EnvOpt reports that optimizing agent environments cut Claude Haiku 4.5 costs by 72.7% while increasing pass rate by 14.34%, with savings also transferring to Opus 5.","prior_refs":[],"source_url":"https://arxiv.org/abs/2611.07372","source_urls":["https://arxiv.org/abs/2611.07372"],"schema_version":"newruntime-agent-readable-v0.2","stable_id":"post:envopt-automated-optimization-of-agent-environments-cuts-claude-99dbcd","status":"published","visuals":[],"editor":{"role":"editor","name":"Andrey Reshetnikov","profile":"https://newruntime.com/owner-profile.md","profile_json":"https://newruntime.com/owner-profile.json","same_as":["https://www.linkedin.com/in/reshetnikov1/","https://t.me/lapetuse"]},"routes":{"html":"https://newruntime.com/posts/envopt-automated-optimization-of-agent-environments-cuts-claude-99dbcd/","markdown":"https://newruntime.com/posts/envopt-automated-optimization-of-agent-environments-cuts-claude-99dbcd.md","json":"https://newruntime.com/posts/envopt-automated-optimization-of-agent-environments-cuts-claude-99dbcd.json"},"markdown_url":"https://newruntime.com/posts/envopt-automated-optimization-of-agent-environments-cuts-claude-99dbcd.md","next_reads":[{"type":"topic","path":"/topics/claude/","url":"https://newruntime.com/topics/claude/","title":"Claude","reason":"Explore the claude topic hub.","media_type":"text/html","markdown_url":"https://newruntime.com/topics/claude.md","json_url":"https://newruntime.com/topics/claude.json"},{"type":"collection","path":"/posts/","url":"https://newruntime.com/posts/","title":"Field Notes","reason":"Open the latest editorial analysis.","media_type":"text/html","json_url":"https://newruntime.com/posts.json"},{"type":"collection","path":"/sources/","url":"https://newruntime.com/sources/","title":"Sources","reason":"See the original sources this archive cites.","media_type":"text/html"}]}