MiniMax-M3.1-Flash 发布： Intelligence Index 得 42 分，单任务成本降至 $0.22
MiniMax 新的 Flash 推理模型，跑分追平 GLM-5.3-Flash，单任务成本只要两毛二美元，比上代便宜一半多，10 月 23 号还开源权重。
MiniMax-M3.1-Flash 在 Artificial Analysis Intelligence Index 得 42 分，比 MiniMax-M3 高 13 分，与 GLM-5.3-Flash 持平，低于 DeepSeek V4.1 Flash 1017 的 45 分。Humanity's Last Exam 得 48%、CritPt 得 22%，均明显优于 M3 的 39% 和 4%。跑完整套基准只用约 1.89 亿输出 token，单任务成本约 $0.22，不到 M3 的 $0.51 一半。定价为每百万 token 输入 $0.15、输出 $0.60，上下文窗口 1M tokens，支持文本和图像输入。AA-Omniscience 准确率 56%，但因几乎每题都答，幻觉率达 93%。
MiniMax-M3.1-Flash scores 42 on the Artificial Analysis Intelligence Index, 13 points higher than MiniMax-M3 and less than half the cost per task. It scores level with GLM-5.3-Flash but behind DeepSeek V4.1 Flash 1017
MiniMax-M3.1-Flash is @MiniMax_AI's new Flash reasoning model, which we benchmarked at its max effort setting. It scores 42 on the Artificial Analysis Intelligence Index, level with GLM-5.3-Flash (max, 42), just ahead of Gemini 3.8 Flash (high, 41), and behind DeepSeek V4.1 Flash 1017 (max, 45)
Key takeaways: ➤ Complex reasoning improved substantially compared to M3: MiniMax-M3.1-Flash scores 48% on Humanity's Last Exam, ahead of GLM-5.3-Flash (max, 40%) and DeepSeek V4.1 Flash 1017 (max, 43%), and level with Gemini 3.8 Flash (high, 48%). On CritPt it scores 22%, ahead of GLM-5.3-Flash (15%) and Gemini 3.8 Flash (18%) and just behind DeepSeek V4.1 Flash 1017 (24%). These are up from MiniMax-M3 which scored 39% and 4% respectively
➤ Fewer output tokens, lower cost per task: MiniMax-M3.1-Flash used ~189M output tokens to run the Intelligence Index, considerably fewer than GLM-5.3-Flash (max, ~324M), DeepSeek V4.1 Flash 1017 (max, ~224M) and Gemini 3.8 Flash (high, ~334M). Combined with pricing of $0.15/$0.60 per 1M input/output tokens, this brings its cost to ~$0.22 per Intelligence Index task, vs ~$0.28 for GLM-5.3-Flash, ~$0.26 for DeepSeek V4.1 Flash 1017 and ~$1.24 for Gemini 3.8 Flash, and less than half MiniMax-M3's ~$0.51
➤ High AA-Omniscience accuracy, offset by a high hallucination rate: MiniMax-M3.1-Flash answers 56% of questions correctly on AA-Omniscience, our benchmark measuring factual recall and hallucination, vs 28% for GLM-5.3-Flash (max) and 43% for DeepSeek V4.1 Flash 1017 (max). It attempts almost every question, resulting in a hallucination rate of 93% and an overall score of 16 on AA-Omniscience
Key model details:
➤ Context window: 1M tokens
➤ Multimodality: Text and image input, text output
➤ Pricing: $0.15/$0.60 per 1M input/output tokens, with cached input at $0.015/M
➤ Availability: MiniMax first-party API, with MiniMax announcing an open weights release on October 23rd
➤ Licensing: Closed weights currently, with MiniMax announcing a weights release on October 23rd
