---
title: "MiniMax's Space Bunny goes official; inside Meta's Prometheus cluster"
date: 2026-10-19
updated: 2026-10-19T00:00:00Z
url: https://arun477.github.io/feed/2026-10-19/
author: Arun Arumugam
---

# MiniMax's Space Bunny goes official; inside Meta's Prometheus cluster

MiniMax names the stealth model that topped OpenCode, and Meta publishes reliability numbers from its gigawatt-scale training cluster.


- [MiniMax M3.1 Flash: the stealth 'Space Bunny' model goes official](https://x.com/MiniMaxAgent/status/2112155992708538688) (MiniMax, release, models, 13:46 UTC): MiniMax's new open-weight coding and agent model has a 1M-token context and already topped OpenCode for 12 days as the anonymous 'Space Bunny', serving 106T tokens. It is free on OpenCode and Vercel AI Gateway for a few days.
- [Inside Prometheus, Meta's gigawatt-scale training supercluster](https://engineering.fb.com/2026/10/19/data-center-engineering/inside-prometheus-meta-gigawatt-scale-supercluster/) (Meta Engineering, blog, infrastructure, 13:46 UTC): Meta shares hard reliability numbers from training Muse: over 85% goodput on pre-training and 90% on RL, with firmware fixes lifting mean time between interruptions from about 47k to over 54k GPU hours.