Vast.ai provides a cloud computing marketplace for renting GPUs, helping developers and AI teams access high-performance infrastructure for demanding workloads. Its services support machine learning, deep learning, model training and inference, fine-tuning, AI text and image generation, audio transcription, data processing, virtual computing, GPU programming, and graphics rendering. Customers can choose from more than 20,000 GPUs across over 40 data centers, with a range of GPU types and pricing shaped by supply and demand.

Vast.ai offers on-demand GPU Cloud instances, dedicated multi-node Clusters for large-scale training, and Serverless model endpoints with automatic benchmarking, optimization, and scaling. Its Model Library includes preconfigured deployments for popular open-source models. Users can search and launch compute through the web console, CLI, Python SDK, or REST API, and can scale resources programmatically. The platform promotes rapid setup, flexible pricing, and per-second billing; customers can get started with a small credit purchase without contracts or sales calls. Vast.ai also provides hosting, hardware financing, documentation, and tools for developers and businesses building AI applications.