Ray Tune alternatives
6 fine-tuning tools in the same lane as Ray Tune, ranked by editorial score.
OP
Optuna
Fine-tuning
8.1
Open-source Python framework for automated hyperparameter optimization across any ML stack.
Free· Free and open source (MIT)hyperparameter-tuningml-experiment-tracking
WB
W&B Sweeps
Fine-tuning · Multi-model (Llama, DeepSeek, Qwen, Kimi)
7.1
Hyperparameter optimization from Weights & Biases with Bayesian search and Hyperband early stopping.
Freemium· Free: $0/mo · Pro: $60/month, billed monthly · Enterprise: Custom plans · Personal: $0/mo · Advanced Enterprise: Custom planhyperparameter-tuningbayesian-optimization
LU
Ludwig
Fine-tuning · Multi-model (PyTorch + HuggingFace Transformers)
8.2
Declarative, YAML-driven deep learning framework for fine-tuning LLMs and multi-modal models without writing training loops.
Free· Free, Apache 2.0 open sourcellm-fine-tuningmulti-modal-training
UN
Unsloth
Fine-tuning · Llama, Mistral, Gemma, Qwen, GLM (multi-model)
8.2
Open-source LLM fine-tuning toolkit with custom kernels that train 2-30x faster and use up to 90% less VRAM.
Freemium· Free open-source; Pro and Enterprise contact saleslora-finetuningqlora
AN
Anyscale
Fine-tuning · Infrastructure (any model)
7.9
Ray-powered platform for training, serving, and scaling LLMs.
Paid· Enterprise / contact salesdistributed trainingRay
LF
LLaMA Factory
Fine-tuning · Multi-model (LLaMA, Mistral, Qwen, Gemma, Phi, LLaVA, ChatGLM, Yi)
7.2
Open-source, no-code WebUI for fine-tuning 100+ open LLMs with LoRA, QLoRA, DPO, and PPO.
Free· Free, open-source (Apache-2.0); self-hostedlora-fine-tuningqlora