{"type":"analysis","id":"analysis:revisited-sonnet-s-savings-proved-conditional-as-haiku-took-the-cheapest-task-slot","slug":"revisited-sonnet-s-savings-proved-conditional-as-haiku-took-the-cheapest-task-slot","title":"Sonnet’s savings proved conditional as Haiku took the cheapest-task slot","description":"Six weeks after New Runtime’s earlier coverage, the case for Sonnet 5.5 on bounded everyday work still holds, but “new baseline” is too broad. Anthropic’s cheaper Haiku option and evidence that stale instructions add tool calls make workflow design part of the cost equation.","published_at":"2026-11-12T13:00:00.000Z","updated_at":"2026-11-12T13:00:00.000Z","record_date":"2026-11-12","topics":["anthropic","claude","benchmarks","retrospective"],"source_urls":["https://newruntime.com/analysis/anthropic-s-sonnet-5-5-30-faster-30-cheaper-but-only-for-tightly-scoped-tasks/","https://www.anthropic.com/transparency","https://www.anthropic.com/claude-haiku-5-5","https://arxiv.org/abs/2611.09802"],"language":"en","routes":{"html":"https://newruntime.com/analysis/revisited-sonnet-s-savings-proved-conditional-as-haiku-took-the-cheapest-task-slot/","markdown":"https://newruntime.com/analysis/revisited-sonnet-s-savings-proved-conditional-as-haiku-took-the-cheapest-task-slot.md","json":"https://newruntime.com/analysis/revisited-sonnet-s-savings-proved-conditional-as-haiku-took-the-cheapest-task-slot.json"},"author":{"role":"author","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"]},"editorial_provenance":{"desk":"authorial","target_ref":"retrospective:6820f10e-a95f-4d49-b64b-06752159a37d","authorial_article_id":"6820f10e-a95f-4d49-b64b-06752159a37d"},"markdown_url":"https://newruntime.com/analysis/revisited-sonnet-s-savings-proved-conditional-as-haiku-took-the-cheapest-task-slot.md","retrieval_nugget":"Six weeks after New Runtime’s earlier coverage, the case for Sonnet 5.5 on bounded everyday work still holds, but “new baseline” is too broad. Anthropic’s cheaper Haiku option and evidence that stale instructions add tool calls make workflow design part of the cost equation.","next_reads":[{"type":"topic","path":"/topics/anthropic/","url":"https://newruntime.com/topics/anthropic/","title":"Anthropic","reason":"Explore the anthropic topic hub.","media_type":"text/html","markdown_url":"https://newruntime.com/topics/anthropic.md","json_url":"https://newruntime.com/topics/anthropic.json"},{"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":"/analysis/","url":"https://newruntime.com/analysis/","title":"Analysis","reason":"Open the latest authorial analysis.","media_type":"text/html","json_url":"https://newruntime.com/analysis.json"},{"type":"collection","path":"/sources/","url":"https://newruntime.com/sources/","title":"Sources","reason":"See the original sources this archive cites.","media_type":"text/html"}]}