One Constant Moves the Verdict: The Fragility of Threshold-Derived Health Labels in Black-Box LLM Endpoint Monitoring

This preprint presents a black-box measurement study of publicly accessible LLM inference endpoints. Using approximately 64,000 production telemetry probes collected over nine days, the study evaluates latency behavior, right-censored observations, threshold-derived health labels, and measurement limitations in operational monitoring systems.

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Publication Details

Journal
Zenodo (CERN European Organization for Nuclear Research)
Published
2026-06-26
DOI
https://doi.org/10.5281/zenodo.20934722
Primary Topic
Medical Coding and Health Information
Type
preprint
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preprint

One Constant Moves the Verdict: The Fragility of Threshold-Derived Health Labels in Black-Box LLM Endpoint Monitoring

Aathil Felix Clarisa
Zenodo (CERN European Organization for Nuclear Research)
Medical Coding and Health Information
preprint

One Constant Moves the Verdict: The Fragility of Threshold-Derived Health Labels in Black-Box LLM Endpoint Monitoring

Aathil Felix Clarisa
preprint en

Abstract

This preprint presents a black-box measurement study of publicly accessible LLM inference endpoints. Using approximately 64,000 production telemetry probes collected over nine days, the study evaluates latency behavior, right-censored observations, threshold-derived health labels, and measurement limitations in operational monitoring systems.

Zenodo (CERN European Organization for Nuclear Research)
R.M.D. Engineering College
Peace, Justice and strong institutions
Medical Coding and Health Information
DOIOpen Access PDFOpenAlex
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One Constant Moves the Verdict: The Fragility of Threshold-Derived Health Labels in Black-Box LLM Endpoint Monitoring — Aathil Felix Clarisa · Zenodo (CERN European Organization for Nuclear Research) (2026) | TGRS Research Map | TGRS