OSS Radar

interp-engine puts Neuronpedia's hooks on vLLM and checks 34 points against TransformerLens and nnsight. Without CUDA you get the parity table, not the speed.

Bun 1.4 moves fifteen package jobs into one Rust-based binary. The package graph shrinks, but compatibility and maintenance move into the runtime.

Herdr gives coding agents durable terminal sessions, agent state, and a control API. Screen-derived semantics remain its limit.

Buzz gives agents signed accounts and shared local compute. Delegation reliability and private code access remain unfinished.

How the Astral acquisition reveals the real war being fought in AI coding — and why everyone is talking about the wrong thing.

A new series: I find a source, go through it, distill what's worth your time, and tell you what I actually think. First up — Vercel's Open Source Program Winter 2026 cohort.