Space Bunny stealth model revealed as MiniMax M3.1 Flash: 428B-A23B, weights Thursday
BTA_Labs · reddit · 2026-10-20
The stealth model that topped OpenRouter for 10 days under the name Space Bunny and vanished Oct 5 is MiniMax M3.1 Flash, now live on the API with weights promised Oct 23.
- 428B total / 23B active params, 1M context, text + image + video input
- $0.15/M input, $0.60/M output on the API
- Vendor-reported benchmarks: tops Claude Opus 5 on Automation-Bench (62.2 vs 50.3), roughly ties DeepSeek V4.1 Flash on DeepSWE (73.7), but clearly loses on Terminal Bench (38.1 vs 51.8)
- The poster flags inconsistent numbers in MiniMax's own post (DeepSeek listed at 77.0 in text, 74.2 in table)
- Napkin math puts Q4 quants around 230-250GB — potentially a fit for 256GB Mac Studio
More from Models
- Smaug Open-Sources SOTA AI Image Detector, Hits 86.7% Recall at 5% False Alarms — bindureddy · 2026-10-20
- Anthropic Email Reveals Claude Mythos 5.1, Opus 5.5, Sonnet 5.5 in Expanded Cyber Verification Program — Sauers_ · 2026-10-20
- Dream-1 launches: 41% of subtasks in 5 minutes, outpacing top LLM agents — gharik · 2026-10-20
- Xiaomi's MiMo-V2.6-Pro is 'the first LLM that thinks like a teenager' — and it's actually good — hrishioa · 2026-10-20
- Cloudflare ships a new 'extraction model': unstructured data in, fields with probabilities out — ritakozlov · 2026-10-20
- Dev hopes MiniMax 3.1 Flash ships under 230B parameters — gnukeith · 2026-10-20