Peer-reviewed work

Publications

Evgenii Arsentev, PhD. 6 peer-reviewed papers, 69 citations per OpenAlex as of 2026-09-10. Current work: the measured economics and reliability of AI agents.

11
works
69
citations
27
journals
8
registries
10
memberships
16
identifiers

Persistent identifiers

Technical reports

2026·Zenodo - technical report (not peer-reviewed)

No Request With a Known Crawler User-Agent Reached llms.txt: Fifteen Days of Logs at One Origin Server

Fifteen days of logs at one origin server: 46,155 requests presenting known search and AI crawler user-agents, none for llms.txt, while robots.txt was requested 698 times in the two days after the file went live. Corrects the numbers in draft-arsentev-llm-context-discovery-00.

DOI: 10.5281/zenodo.23018429 · series: 10.5281/zenodo.23018428 · PDF

2026·Zenodo - technical report (not peer-reviewed)

AI Content Engine Economics: The Cost of Short-Form Video Production by AI Agents and by People

One company's AI content engine produced 1,497 short-form videos across 67 channels in 101 days for $4,313.76 in subscriptions: $0.52 per 1,000 organic views and $2.88 per video. The same volume from a human studio would take 42–78 people and $179,000–1.21 million a month; buying the reach from influencers would cost 3.8–57 times more. Built by one person with no technical background; code written by Claude agents. Company under NDA, figures and calculations only.

DOI: 10.5281/zenodo.22802229 · series: 10.5281/zenodo.22802228 · PDF

2026·Zenodo - technical report (not peer-reviewed)

Clear Every Third Task: A Measured U-Curve in the Context Economy of Coding Agents

Corrected 2026-09-15. How often should an agent's context be cleared? 36 runs, six session-length policies, six replicates each, and no failure among the tests the agent wrote (4086 in total). Cost is U-shaped in session length: clearing after every task costs 33.5% more than clearing every third (p = 0.0022), while never clearing costs 9.7% more, which is not significant (p = 0.046, Holm-adjusted 0.14). Three, four and six tasks per session are indistinguishable, so the low region is a plateau. The U decomposes into cache writes falling and context per call rising, with 1-hour cache writes priced 20:1 against cache reads.

DOI: 10.5281/zenodo.22759217 · series: 10.5281/zenodo.22699667 · PDF

2026·Zenodo — technical report (not peer-reviewed)

The Context Economy of Agentic LLM Sessions: Where the Money Actually Goes

Corrected 2026-09-15. 722 agent sessions, 150,902 model calls, 34.6 billion tokens. Context handling accounts for 87.8% of modeled cost and generation for 12.2%; by estimate, 80% of the spend comes from 2.9% of sessions. Includes two log-deduplication traps that change the answer by a factor of two in either direction, and the de-identified dataset.

DOI: 10.5281/zenodo.22759216 · series: 10.5281/zenodo.22688704 · PDF

Preprints

2026-09-14·Qeios — article, preprint v1 (open peer review)

A Suite That Does Not Discriminate: The Case for Result-Set Fields in Agent Conformance Records

A set of conformance checks can consist entirely of sound, correctly reported, individually falsifiable checks and still support no conclusion, because no check changed state across the conditions compared. That is a property of the set, and no per-check field can carry it. The paper proposes a result-set field recording whether any check discriminated and which ones; it documents the adjacent case in a published corpus of 36 coding-agent runs, where a verdict of 4,086 tests and zero failures held with zero variance across six conditions whose modelled cost differed by 25.3% (a figure computed with the incorrect prices of report versions 1.0 and 1.1; 33.5% at the corrected prices of version 1.2, DOI 10.5281/zenodo.22759217); it reports as negative the tempting explanation that longer sessions simply did less work; and it identifies a case the proposed field cannot answer — where the checks are authored by the run itself, check identity does not survive across runs and the comparison-level question is undefined rather than false.

DOI: 10.32388/0BV3Z8

Software

2026·v0.2.1 · MIT

contextburn

Open-source meter built from the context-economy experiments. Reads the transcripts Claude Code already writes locally and reports run efficiency: the share of paid tokens that became model output rather than a re-reading of context already sent, by tokens and cost-weighted. Makes no network calls.

DOI: 10.5281/zenodo.22712985

Listed in: OECD.AI Catalogue of Tools & Metrics · Research Software Directory

Open data and video

2026·Zenodo · CC BY 4.0

AI Tools Radar: GitHub and Hugging Face projects selected by arsentev.ai (monthly)

490 open-source AI projects selected and reviewed by the arsentev.ai radar since June 2026, with daily GitHub and Hugging Face API snapshots of how they evolve after selection. A new version is released every month.

DOI: 10.5281/zenodo.22730450

2026·Hugging Face · CC BY 4.0

Context U-curve: 36 coding-agent runs under six context-clearing policies

Run-level token counters, modeled cost, wall clock and test outcomes for every run behind the U-curve report. Counters only - no prompts, no model output, no paths.

DOI: 10.57967/hf/10366

2026·Hugging Face · CC BY 4.0

Context economy: modeled cost of 722 coding-agent sessions

Per-session model calls and modeled cost at list prices for the 722 sessions behind the Context Economy report (v1.1). Counters only - no prompts, no code, no project names.

DOI: 10.57967/hf/10649

2026·Kaggle · CC BY 4.0

Context U-Curve of Coding Agents (36 runs)

The same run-level dataset on Kaggle, with a data card and per-column profiles.

2026·OSF · CC BY 4.0

Clear Every Third Task - report and data on OSF

Open Science Framework project holding the report PDF, the run-level dataset and its card.

DOI: 10.17605/OSF.IO/5QTWY

2026·YouTube · Zenodo · Internet Archive · CC BY 4.0

contextburn demo: run efficiency of 36 coding-agent runs

Twenty-second terminal recording of contextburn over the experiment's session logs: 168 sessions, 94.4% of paid tokens re-read context already sent. Archived at archive.org/details/contextburn-demo-context-ucurve-2026.

DOI: 10.5281/zenodo.22713920

Peer review service

Published peer reviews

Letters to journals (eLetters)

Public comments to regulators and parliament

Memberships and standards

  • W3C

    Community and working group participant

    Participant, public roster of the Cognitive AI Community Group

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  • W3C

    Editor, v0.1 of the conformance reporting format, Agent Conformance and Benchmarking Community Group

    Reproducible methods for measuring AI agent conformance. Appointed editor of v0.1 by the group on the public mailing list, 17-18 September 2026; v0.1 released on the list on 30 September 2026; a community-group report, not a W3C standard

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  • IETF

    Author of two Internet-Drafts: agent run metrics and context file discovery

    draft-arsentev-agent-run-metrics · draft-arsentev-llm-context-discovery

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  • MLCommons

    Working group participant

  • AI Standards Hub

    Community member (Alan Turing Institute, BSI, NPL)

  • FORCE11

    Member, scholarly communication community

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  • Research Data Alliance

    Member

    Member since September 2026, participant in 13 working and interest groups

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  • Internet Society

    Member, including the AI Special Interest Group

Earlier peer-reviewed work

6 peer-reviewed papers from 2017–2019, 69 citations, indexed in Scopus, Web of Science and PubMed. The subject is health care financing and organisation — unrelated to the current work on AI agents, so the full list lives in the registries.