MiniMax M3.1 Flash in practice: tests and comparisons with DeepSeek V4.1 Flash

The post cites M3.1 Flash at $0.15 per 1M input and $0.60 per 1M output tokens, urging B2B SaaS founders to revisit their default-model pricing decision and test which customer requests really need premium tokens.

Same-condition local test found DeepSeek better at translation, coding roughly even, but MiniMax used 2.7–5.6x more tokens.

A deployment writeup runs MiniMax M3.1 Flash on four NVIDIA DGX Spark boxes with vLLM TP4 and DSpark speculative decoding, reporting a 300K context, 1.42M-token KV pool and 84/84 requests passed, with scripts and gotchas published.

A third party releases DFlash2, a variant built on MiniMax M3.1 Flash, under Apache 2.0 with a Hugging Face link, an open-weight ecosystem development.

A user speculates that M3.1 Flash shares M3's 428B total / 23B active parameters and is essentially M3 relabeled as a Flash tier, hinting a Pro model is coming.

The author notes MiniMax M3.1 Flash had day-0 vLLM support, but aimed at datacenter-class GPUs; it runs on an RTX Pro 6000 now, though a dedicated recipe is needed for it to work properly.

The author maps Space Bunny to M3.1 Flash and regrets not trying it while it was free, saying the output quality surprised them.

A developer introduces MiniMax M3.1 Flash, formerly Space Bunny: a 428B-total/23B-active multimodal MoE with 1M context, QAT FP4 weights plus a DSpark draft head, runnable on SGLang and vLLM.

On the same prompt in Claude Code, Opus 5.5 on Ultracode took 6 hours while MiniMax M3.1 Flash finished in 17 minutes, though the author says the quality gap is clear.

The model produced a playable three.js scene with custom water and grass shaders, terrain, movement, collision and a follow camera, plus a trail and bell-triggered sunset; the tester reports 150–200 tok/s and prefers it to Luna/Haiku, though DeepSeek still came out ahead.

A single prompt produced a working telemetry dashboard with live charts, task queue and four themes, deployed to a public URL; the author cites ~70% lower agent cost at $0.15 per 1M input tokens.

An Arabic post covers M3.1 Flash's downloadable weights: 428B-parameter MoE with 23B active, text/image/video input, 1M context, ready vLLM/SGLang support, and a custom community license.