Together AI is an AI cloud infrastructure company providing GPU compute, model inference, and fine-tuning services for open-source and custom AI models, marketed as an "AI Native Cloud." It was founded in 2023 by Vipul Ved Prakash alongside Stanford researchers Chris Ré and Tri Dao and Percy Liang, combining infrastructure expertise with deep machine-learning research credentials.
The company closed an $800 million Series C at an $8.3 billion valuation in mid-2026, with Saudi Aramco's venture arm leading the round and Nvidia among the participants - a notable alignment given Together AI's business depends heavily on GPU access. Its platform hosts more than 200 open-source models with an emphasis on high-throughput, low-latency serving for enterprise customers.