Together AI raises $800M to grow its AI-optimized public cloud

Together AI Inc., the operator of a cloud platform optimized to run open-source artificial intelligence models, has raised $800 million from investors.

The startup stated in its funding announcement today that the Series C deal was led by Aramco Ventures. Nvidia Corp., Vista Equity Partners, General Catalyst and several other institutional backers contributed as well. Together AI is now worth $8.3 billion.

Together AI’s platform includes a serverless inference service that developers can use to run open-source AI models, which removes the need to configure graphics cards and network equipment. It claims its serverless environments provide about twice the performance of the fastest alternative.

The company also sells three other inference services. Two use dedicated infrastructure that offers more reliability guarantees and customization options than its serverless offering. The third service, Batch Inference, prioritizes cost-efficiency over speed. It provides an up to 50% price reduction for models that don’t require the ability to answer user prompts immediately.