Evaluation Infrastructure
Private Grading for a Coding-Agent Benchmark
If a benchmark publishes its tests, AI coding agents can be tuned to pass exactly those tests. JaseciBench keeps its grading tests private.
2026
Engineering
What I have built
Case studies of systems I have built, maintained and fixed, grouped by system. Each one covers the problem, the design decisions and the public pull requests behind them.
Compilers / Languages
Program Analysis in the Jac Compiler
The compiler’s map of the paths a program can take was wrong for several common statements, so the errors and warnings built on it were wrong too.
Jaseci Labs · Mar 2026
AI Systems
Tools That Help AI Coding Assistants Write Jac
AI coding assistants know little about Jac, a new language, and in my app-building runs smaller models struggled when shown every tool at once.
Jaseci Labs · Mar to Apr 2026
Developer Infrastructure
Safe Deploys and Fast Rollback for Jac Applications
Deploys could run the wrong Jac version, fail minutes in after databases were already created, and undo a bad release only by rebuilding it.
Jaseci Labs · 2026