RouteLLM: RIP Martian? (Plus: AINews Structured Summaries update)
LMSys introduces RouteLLM, an open-source router framework trained on preference data from Chatbot Arena, achieving cost reductions over 85% on MT Bench, 45% on MMLU, and 35% on GSM8K while maintaining 95% of GPT-4's performance. This approach surpasses previous task-specific routing by using syntax-based Mixture of Experts (MoE) routing and data augmentation, beating commercial solutions by 40%. The update highlights advances in LLM routing, cost-efficiency, and model performance optimization across multiple models rather than single-model or MoE-level improvements. Additionally, the AI Twitter recap notes the Gemma 2 model family as a top open model, the Block Transformer architecture for improved inference throughput, and a proposal for a fully Software 2.0 computer vision system by karpathy.