{"type":"post","id":"how-to-serve-trillions-of-tokens-for-trillion-6b3dbd","slug":"how-to-serve-trillions-of-tokens-for-trillion-6b3dbd","title":"How to serve trillions of tokens for trillion","description":"Coding-agent inference economics are increasingly determined by how effectively a runtime reuses long, overlapping session context rather than by raw GPU capacity alone.","retrieval_nugget":"Coding-agent inference economics are increasingly determined by how effectively a runtime reuses long, overlapping session context rather than by raw GPU capacity alone.","published_at":"2026-09-23","updated_at":"2026-09-23","record_date":"2026-09-23","date_kind":"published_at","topics":[],"source_urls":["https://modal.com/blog/trillion-tokens-trillion-parameters"],"schema_version":"newruntime-agent-readable-v0.2","stable_id":"post:how-to-serve-trillions-of-tokens-for-trillion-6b3dbd","status":"published","visuals":[],"editorial_provenance":{"schema_version":"newruntime-editorial-copy-v1","content_status":"source_grounded_final","final_copy_sha256":"sha256:38b91adc3117fa1478cf6a44fe7439ef8707f06fba6442c114244b22611a05b3","reviewed_at":"2026-09-23T20:01:09.695Z","source_evidence_count":1,"verified_claim_count":3,"site_analysis_schema_version":"newruntime-site-analysis-v1","site_object_kind":"field_note","observed_fact_count":3,"implication_count":2,"watch_condition_count":2,"related_record_count":0},"analysis":{"schema_version":"newruntime-site-analysis-v1","object_kind":"field_note","thesis":"Coding-agent inference economics are increasingly determined by how effectively a runtime reuses long, overlapping session context rather than by raw GPU capacity alone.","observed_facts":[{"text":"Modal describes a production workload with roughly 100,000 input tokens and roughly 500 output tokens per request, a 200:1 ratio.","source_urls":["https://modal.com/blog/trillion-tokens-trillion-parameters"]},{"text":"Modal reports 2.8× higher per-user replica performance and 5.6× higher aggregate performance across users after its optimizations.","source_urls":["https://modal.com/blog/trillion-tokens-trillion-parameters"]},{"text":"Modal says one service processed hundreds of billions of tokens per day and trillions in aggregate.","source_urls":["https://modal.com/blog/trillion-tokens-trillion-parameters"]}],"mechanism":"The mechanism is cumulative agent sessions: each turn carries prior conversation, tool results, and model output forward, so much of the new request overlaps with already processed context. KV caching avoids redoing that computation, but turns state placement, HBM capacity and bandwidth, scheduling, and concurrency into first-order runtime concerns.","why_now":"This matters now because coding agents are extending sessions through iterative tool use, making long-context reuse a routine production workload rather than an edge case.","implications":["The immediate implication is that agent-platform teams should optimize and observe cache reuse, memory pressure, time-to-first-token, decode rate, and concurrency together rather than treating throughput as a standalone metric.","Infrastructure choices for agent products should be evaluated against session-shaped traffic, not only isolated prompt-response benchmarks."],"evidence_boundary":"The evidence does not establish that Modal’s gains transfer to other models, hardware fleets, traffic mixes, or inference engines.","watch_conditions":["Watch whether independent operators publish comparable long-session traces, cache-hit data, and cost-per-completed-agent-task results.","Watch whether inference engines expose cache and memory scheduling controls as first-class agent-runtime primitives."],"related_records":[],"new_branch_reason":"No prior New Runtime record content was supplied; this begins a distinct record focused on production serving mechanics for long-session coding-agent inference rather than a presumed related story."},"routes":{"html":"https://newruntime.com/posts/how-to-serve-trillions-of-tokens-for-trillion-6b3dbd/","markdown":"https://newruntime.com/posts/how-to-serve-trillions-of-tokens-for-trillion-6b3dbd.md","json":"https://newruntime.com/posts/how-to-serve-trillions-of-tokens-for-trillion-6b3dbd.json"},"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"]},"next_reads":[{"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"}]}