📖 The AI Tool Bible

Fine-tuning

Train and host custom models on your own data.

33 tools

Why it matters

Fine-tuning has gone from "deep ML team only" to "a few hours of JSONL away" — but the choice between closed-model FT (OpenAI), open-model FT (Together, Modal), and memory-tuning matters more than ever.

What's in here

Covers closed-model fine-tuning (OpenAI), open-model FT + serving (Together AI, Replicate, Modal), distributed training platforms (Anyscale), and specialised platforms (Lamini for factual recall).

How to pick

Pick OpenAI for the easiest UX on closed models. Pick Together AI for open-model FT + serving in one place. Pick Modal for serverless GPU control. Pick Lamini specifically for hallucination-free factual recall.

Paperspace Gradient

Fine-tuning · Bring-your-own (PyTorch, TensorFlow, Hugging Face)
7.2

End-to-end MLOps platform with GPU notebooks, training jobs, and model deployment, now folded into DigitalOcean.

Freemium· Free notebook tier; paid Pro/Growth plans + per-second GPU billingmodel-trainingfine-tuning

H2O AutoML

Fine-tuning · H2O-3 (GBM, XGBoost, GLM, DRF, Deep Learning, Stacked Ensembles)
7.1

Open-source automated machine learning that handles feature engineering, model selection, and stacked ensembling out of the box.

Free· Free and open-source (Apache 2.0); paid Driverless AI sold separatelyautomltabular-ml

Scale GenAI Platform

Fine-tuning · Multi-model (OpenAI, Google, Meta, Mistral)
7.1

Enterprise agent platform from Scale AI that connects your data, orchestrates multi-agent workflows, and learns from human feedback inside your own VPC.

Enterprise· Contact sales; enterprise contracts onlyenterprise-agentsrag-over-internal-data

W&B Sweeps

Fine-tuning
7.1

Hyperparameter optimization from Weights & Biases with Bayesian search and Hyperband early stopping.

Freemium· Free for personal use; team and enterprise tiers via W&Bhyperparameter-tuningbayesian-optimization

Forefront

Fine-tuning · Multi-model (Mistral-7B, Mixtral, Phi-2)
7.0

Fine-tune and serve open-source LLMs on your own data without managing GPUs.

Paid· Usage-based per token (e.g. Phi-2 $0.0006/1k, Mixtral $0.004/1k)fine-tuningopen-source-llms

ONNX

Fine-tuning
7.0

Open standard for representing and exchanging machine learning models across frameworks and runtimes.

Free· Free and open source (Apache-2.0); Linux Foundation AI projectmodel-interchangeedge-deployment

Apache SINGA

Fine-tuning
6.9

Apache-licensed distributed deep learning library focused on scalable training across GPUs and nodes.

Free· Free, Apache 2.0 licenseddistributed trainingdeep learning research

DagsHub

Fine-tuning
6.8

GitHub-style collaboration platform for ML datasets, experiments, and models with MLflow and DVC under the hood.

Freemium· Free Individual tier; Team $99-$119/user/mo; Enterprise customexperiment-trackingdata-versioning

Velda

Fine-tuning
6.7

Serverless GPU orchestration that runs AI training and batch jobs without Docker or Kubernetes.

Freemium· Free monthly credits on Velda Cloud; Enterprise contact salesdistributed-trainingbatch-inference