Last Week in AI #250: Microsoft's Phi-2, Mistral's Mixtral 8x7b, efficient sequence with Mamba, $24 Deepfakes disrupting Bangladesh's election, and more!

The small 2.7B Phi-2 model is surprisingly strong, Mistral releases MoE model, Mamba may replace transformers for better performance, cheap deepfakes ran amok in election campaigns

campaigns deepfakes election mamba microsoft mistral mixtral mixtral 8x7b moe performance phi phi-2 releases small transformers