Together AI announced that it has raised 730 million yuan in Series A funding, led by K2 Global, with participation from several companies including Nvidia. The company emphasizes open source in the large model field and has released highly praised open source products, including RedPajama-INCITE, RedPajama-Data-v2, and FlashAttention v2. The FlashAttention v2 developed by Dr. Tri Dao, the company's chief scientist, has seen widespread application, improving training and fine-tuning.