Unsloth

Unsloth is an advanced, highly optimized framework designed to radically accelerate the fine-tuning and training of Large Language Models (LLMs) like Llama, Mistral, DeepSeek, and Gemma. By manually deriving compute-heavy mathematical operations and handwriting custom GPU kernels, Unsloth operates up to 30x faster than standard Flash Attention 2 (FA2) implementations while using 90% less memory. This allows developers to train custom models in 24 hours instead of 30 days, democratizing AI development by making it accessible on consumer-grade hardware (like a single NVIDIA T4 GPU) up to large-scale, multi-node H100 enterprise clusters. The platform offers a free open-source tier fully compatible with platforms like Google Colab and Kaggle. For larger deployments, Unsloth provides Pro and Enterprise tiers that unlock multi-node support, full training capabilities, advanced multi-GPU integrations, MoE training, and RL techniques like GRPO.