Together AI operates a cloud platform focused on open-source AI models, letting companies train, customize, and run models like Llama and Mixtral without building their own infrastructure. They also invest heavily in AI research, contributing to major open-source projects that benefit the broader community. Together AI has positioned itself as the leading champion of the open-source AI ecosystem, investing heavily in research and contributing to major open models while building the most optimized infrastructure for running them. Their research team has co-authored influential papers and developed key training and inference optimizations that benefit the entire open-source AI community.

The explosive adoption of open-source AI models like Llama, Mixtral, and DeepSeek across enterprises has driven Together AI's growth as the go-to platform for open-source model deployment and customization.

Together AI raised a $305M Series B in 2025 at a $3.3B valuation led by Salesforce Ventures and Nvidia, and has continued to expand its research contributions and enterprise partnerships.