# Jamba-Instruct

> AI21 called it the first production-grade model built on Mamba, and the point of the architecture was arithmetic: state-space layers interleaved with attention carried two hundred and fifty-six thousand tokens without the memory cost that number normally implies. It was the argument that the Transformer was a choice rather than the only option, and it was on sale for thirteen months.

2024-06-25 — 2025-08-01 · lived 1 year, 1 month

This URL is the guided walk — the 3D cemetery, standing at this grave. The written record is at [Jamba-Instruct's epitaph](https://models.rip/jamba-instruct/epitaph).

## Elsewhere

- [The whole cemetery](https://models.rip/)
- [The dataset](https://models.rip/graveyard.json)