Meta AI has released Llama 3.1, including a 405B parameter model that triggers regulatory considerations like the EU AI Act and SB 1047. The model incorporates extensive synthetic data techniques for code, math, multilinguality, long context, and tool use fine-tuning, with RLHF using synthetic preference data from Llama 2.

The launch was coordinated across major inference providers, with Groq demonstrating 750 tokens per second inference speed and Fireworks leading in pricing. The updated license explicitly allows synthetic data generation, marking a significant step in open frontier-class LLMs and cost-efficiency improvements since March.