同一 Three.js 灯塔 prompt：M3.1 Flash 做出电影感，DeepSeek V4.1 Flash 更
同题对比：M3.1 Flash 给出雾中光束、云内闪电和海浪泡沫的电影化场景，DeepSeek 只做了灯塔；两者同价 $0.15/$0.60，但 DeepSeek 工作日高峰翻倍，M3.1 Flash 全天平价。
Gave two Flash models the same prompt: build a storm at sea with a lighthouse in Three.js. DeepSeek V4.1 Flash went for a lighthouse. MiniMax M3.1 Flash went for a movie scene: a sweeping beam through the fog, lightning inside the clouds, foam breaking on the crests. Then there's the bill. Both start at the same price: $0.15 per million input tokens and $0.60 per million output. But DeepSeek doubles to $0.30 and $1.20 at peak hours on weekdays. MiniMax M3.1 Flash stays flat, any hour, any day. That sounds small until you run agents. For a single prompt, nobody cares. For agents that run for hours, it's the difference between leaving it on overnight or babysitting the clock. With flat pricing you can iterate, retry and leave it running without checking the clock. Quick tip for existing M Plan subscribers: you can use MiniMax Code without limits until October 25. I'd use that window to stress test M3.1 Flash on a real project before deciding anything. Links below.