Together AI is a cloud-based AI development platform that gives developers and enterprises fast, flexible access to the leading open-source large language models through serverless and dedicated inference APIs. The platform hosts an extensive model library — including Llama, DeepSeek, Qwen, Mistral, and others — and delivers high-performance inference through serverless, batch, and dedicated endpoints, enabling teams to build and scale AI applications without managing underlying infrastructure. With transparent, consumption-based pricing and purpose-built GPU clusters powered by NVIDIA's latest hardware, Together AI is designed for AI-native companies that need production-grade reliability at scale.
Beyond inference, Together AI provides a full model development lifecycle through its fine-tuning and evaluation tools, allowing teams to shape open-source models with their own data and rigorously measure output quality before deployment. The platform extends further into compute infrastructure with self-service GPU clusters, managed storage, and sandboxed development environments, making it a unified destination for teams moving from experimentation to production. Backed by original systems research — including contributions to FlashAttention and custom inference optimization techniques — Together AI combines frontier infrastructure performance with developer-friendly tooling to help organizations build faster and more cost-effectively than cloud hyperscalers typically allow.