Together AI

About Together AI

Together AI is a cloud platform that lets developers run inference, fine-tune, and deploy open-source large language models without managing their own GPU infrastructure. The platform provides access to a wide range of popular open models — including Llama, Mistral, and other community-standard architectures — through a unified API that is designed to be compatible with existing OpenAI-style request formats, making it straightforward to swap in as a backend for applications already built around that interface. The primary use cases center on teams that want fast, cost-effective inference at scale without the overhead of provisioning and maintaining dedicated hardware. Developers can call models serverlessly, paying only for the compute they consume, or they can spin up dedicated endpoints when consistent latency and throughput matter more than variable cost. The fine-tuning capability allows teams to adapt base models on their own datasets, producing custom checkpoints that can then be served through the same API infrastructure. This makes Together AI relevant not just for prototyping but for production workloads where a general-purpose model needs to be specialized for a particular domain or task. The platform is aimed squarely at developers, ML engineers, and startups building AI-powered products who want access to capable open models without committing to the complexity of self-hosted GPU clusters or the vendor lock-in of proprietary model providers. Pricing follows a consumption-based model, with costs tied to token volume for inference and compute time for fine-tuning jobs, alongside options for reserved capacity. Together AI positions itself as a performance-focused alternative to other hosted inference providers, frequently publishing throughput benchmarks to support that claim. For teams prioritizing flexibility, open-weight models, and the ability to customize what they deploy, it covers a practical middle ground between fully managed proprietary APIs and fully self-hosted solutions.

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