{"type":"post","id":"the-fastest-delta-weight-syncs-in-the-world-9f8e72","slug":"the-fastest-delta-weight-syncs-in-the-world-9f8e72","title":"The fastest delta weight syncs in the world","description":"Baseten says it has redesigned delta weight synchronization so a roughly 770 GB GLM-5.3 update reaches serving replicas in 15 seconds on average, with a 0.8-second request pause.","retrieval_nugget":"Baseten says it has redesigned delta weight synchronization so a roughly 770 GB GLM-5.3 update reaches serving replicas in 15 seconds on average, with a 0.8-second request pause. For teams running RL rollouts or frequently refreshing large models, the relevant change is not a new model: it is a smaller interruption window and more host memory available for KV cache.","published_at":"2026-10-31","updated_at":"2026-10-31","record_date":"2026-10-31","date_kind":"published_at","topics":["harness-engineering","agent-runtime"],"entities":["Baseten","GLM-5.3","Kimi K3","GB300","SGLang","AgentX","Baseten Delivery Network"],"related_patterns":["harness-architecture-outlives-model-choice"],"novelty_label":"new_fact","what_changed":"Builds on Baseten’s earlier delta-weight-sync work: the same 770GB sync now takes 15 seconds with a 0.8-second pause, and the redesigned path frees host memory for KV cache.","prior_refs":["memory:55fef327-562e-8d5a-a540-0ebccb607a62"],"source_url":"https://www.baseten.co/blog/the-fastest-delta-weight-syncs-in-the-world","source_urls":["https://www.baseten.co/blog/the-fastest-delta-weight-syncs-in-the-world"],"schema_version":"newruntime-agent-readable-v0.2","stable_id":"post:the-fastest-delta-weight-syncs-in-the-world-9f8e72","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/the-fastest-delta-weight-syncs-in-the-world-9f8e72/","markdown":"https://newruntime.com/posts/the-fastest-delta-weight-syncs-in-the-world-9f8e72.md","json":"https://newruntime.com/posts/the-fastest-delta-weight-syncs-in-the-world-9f8e72.json"},"next_reads":[{"type":"topic","path":"/topics/harness-engineering/","url":"https://newruntime.com/topics/harness-engineering/","title":"Harness Engineering","reason":"Explore the harness-engineering topic hub.","media_type":"text/html","markdown_url":"https://newruntime.com/topics/harness-engineering.md","json_url":"https://newruntime.com/topics/harness-engineering.json"},{"type":"topic","path":"/topics/agent-runtime/","url":"https://newruntime.com/topics/agent-runtime/","title":"Agent Runtime","reason":"Explore the agent-runtime topic hub.","media_type":"text/html","markdown_url":"https://newruntime.com/topics/agent-runtime.md","json_url":"https://newruntime.com/topics/agent-runtime.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":"/source-ledger.json","url":"https://newruntime.com/source-ledger.json","title":"Source Ledger","reason":"Inspect the public source evidence graph.","media_type":"application/json"}]}