Together AI

Together AI is a cloud platform built for running, fine-tuning and deploying open-source AI models at scale. It positions itself as the home for developers and companies who want to build on open models — rather than depend solely on closed providers — offering fast inference, training and fine-tuning, and the infrastructure to take models from experiment to production without managing GPUs themselves.

The platform gives access to a broad and growing catalog of leading open models across language, image, code and more, available through simple, OpenAI-compatible APIs so developers can integrate them quickly or switch providers with minimal code changes. Inference is optimized for speed and cost, and the pricing is designed to be competitive and transparent, which matters greatly for applications that make large volumes of model calls. This makes Together a practical foundation for chatbots, agents, RAG systems, content generation and other AI features.

Beyond inference, Together AI's real differentiator is the full lifecycle it supports. Teams can fine-tune open models on their own data to improve quality and tailor behavior, and even train custom models, all on Together's scalable GPU infrastructure. This appeals strongly to companies that want control, customization and ownership of their AI — keeping their data and models in their hands rather than fully outsourced to a closed black box. With its commitment to open models, performance, and a developer-friendly experience, Together AI has become a key player for organizations betting that open-source AI will power much of the future. For developers who want the flexibility of open models with the convenience of a managed cloud, it offers a compelling, well-rounded platform.