Lightning AI
Free tierThe AI development platform for building, training, and deploying AI models at scale
Free tier available·All audiences·Powered by Bring your own / Open source models·API available·Open source
Key strengths
End-to-end AI development platform from research to productionPyTorch Lightning framework for scalable model trainingManaged cloud compute with GPU accessSupports distributed training across multiple nodesSeamless transition from experimentation to deployment
Free tier + paid plans
New York, USA
Founded 2019
Self-hostable
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- Distributed model training: Scale PyTorch training across multiple GPUs and nodes using DDP, FSDP, or DeepSpeed strategies with minimal code changes
- Experiment tracking & reproducibility: Log metrics, hyperparameters, and artifacts across training runs for comparison and auditability
- LLM fine-tuning: Fine-tune large language models (e.g., LLaMA, Mistral) on custom datasets using managed A100/H100 GPU clusters
- ML pipeline orchestration: Build end-to-end Lightning Apps that chain data preprocessing, training, evaluation, and deployment steps
- Model serving & inference APIs: Deploy trained models as scalable REST API endpoints with autoscaling compute on Lightning cloud
- Research prototyping: Rapidly iterate on novel architectures with PyTorch Lightning's structured yet flexible training abstraction