Together AI was founded in 2022 by Vipul Ved Prakash and a team of researchers focused on decentralized and efficient AI computing. The company has grown into a leading inference and fine-tuning platform for open-source models, offering developers fast, cheap access to Llama, Mixtral, and dozens of other popular open models.
Core Products
Together Inference provides optimized serving for open-source models with low latency and competitive pricing. Together Fine-tuning enables custom model training on proprietary data. Together GPU Clusters offer dedicated compute for teams needing persistent resources. The unified API provides access to 100+ models with simple model-switching.
Competitive Position
Together AI competes in the increasingly crowded open-model inference space, differentiating through speed, cost efficiency, and research contributions. The company has published influential work on FlashAttention and other efficiency techniques. Its close relationships with open-source model creators and strong research team give it credibility that pure cloud providers lack.
Recent Developments
Together raised $305 million in 2025 at a $3.3 billion valuation, reflecting the growing demand for open-model infrastructure. The company expanded its model catalog and improved inference speeds while reducing costs. Together has also invested in custom hardware optimization and multi-model routing for compound AI systems.
Outlook
Together AI sits at the center of the open-source AI ecosystem, benefiting from every new model release from Meta, Mistral, and others. The company’s challenge is maintaining margins in a commoditizing inference market while differentiating through performance, research, and developer experience. As enterprises adopt multi-model strategies, Together’s platform approach becomes increasingly attractive.