Rodion Kazennov

FORWARD DEPLOYED · AI SOLUTIONS ARCHITECT

Rodion Kazennov

I build LLM agents and developer tools. I test them with benchmarks and publish the numbers, negative results included.

Email meOpen to FDE and Solutions Architect roles.

Selected work

LAB NOTE · BENCHMARK

A code graph did not make my coding agent cheaper

I ran Claude Code 252 times on public repositories. With the graph it never used fewer tokens than with plain Read and Grep.

Read the note →
graph, lean wrappergraph, raw serverRead, Grep, Glob only
Small repos, haiku 4.530321 (28/36)43846 (32/36)31159 (33/36)
dub, 25k nodes, haiku 4.518791 (22/24)20687 (22/24)14955 (20/24)
dub, 25k nodes, sonnet 517227 (22/24)23085 (22/24)13348 (22/24)
Median tokens per run over 252 Claude Code runs. Lower is cheaper; correct answers in brackets.

Selected work

SIMULATION · OPEN SOURCE

Can a cell membrane assemble itself?

I simulated a primordial soup on the GPU with WebGPU and set the pass criteria before the runs. No closed membrane formed, and the repository has the measured cause.

Code and results →
A cube of simulated particles with one tangled sheet running through it
The last checkpoint of the largest run: one sheet runs through the whole box and holds no water. A closed vesicle needs at least 315 water beads inside.

Selected work

OPEN SOURCE

Contributions to other projects

Merged in avoid-ai-writing: the detector no longer mistakes Russian and Greek text for disguised Latin letters. In review: PartCrafter on Apple Silicon, and a last-frame image option for ltx-2-mlx.

On GitHub →
Pull requests to other people's repositories, with their state on GitHub.

Lab

All notes →

One simulation step

A step at that sizeabout 500× longer

The broken run0.04 ms

Its health check passed:no NaNlargest force 00 neighbours

The run finished about 500 times faster than it should have, and its health check passed. The GPU had skipped the work without raising an error.

Products

AllKeep Inventory

Photograph an item, and the app labels it and remembers which box it is in.

Google PlayWeb app

Japan Life Hub

Calculators for moving costs and take-home pay in Japan, and guides for the move.

Open
AllKeep Inventory, home screenAllKeep Inventory, home screen
Japan Life Hub, take-home pay calculatorJapan Life Hub, take-home pay calculator

About

I've written software since 2014. I started on .NET back ends, moved to front-end architecture for large platforms and led the teams that built them. Now I build LLM agents and developer tools and write up how they perform in the Lab.

Open to Forward Deployed Engineer and Solutions Architect roles.

Email: nefayran@gmail.comGitHub
  1. 2014.NET back ends
  2. ThenFront-end architecture for large platforms and the teams that built them
  3. NowLLM agents and developer tools, measured in the Lab