Anthropic’s latest publicly released model, Claude 3.5 Sonnet. This might not seem like a big deal because it’s not a “whole number” release like Claude 3 was or Claude 4 eventually will be, but in fact, it’s quite a big deal as this model now appears to actually represent the state of the art for text-in/text-out generative LLM, outcompeting the other frontier models like OpenAI’s GPT-4o and Google’s Gemini.