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H2O LLM Studio

H2O LLM Studio is an open-source Python framework with a no-code graphical interface and a command-line option for fine-tuning large language models. It provides controls for training configuration, performance evaluation and experiment comparison.

Independent OpenViST project profile, based on linked sources.

H2O LLM Studio — OpenViST project profile in AI Developer Tools & SDKs.
OpenViST project illustration. See the linked sources for product details.
Understand the project

Practical overview

When it fits

Use H2O LLM Studio when you need a graphical or command-line workflow for configuring and assessing LLM fine-tuning, and your machine meets its documented GPU and software requirements.

Who it is for

  • People who want to fine-tune LLMs through a graphical workflow without needing coding experience for the GUI path.
  • Developers who prefer to run fine-tuning workflows through a command-line interface.
  • Teams that need a self-hosted workspace for configuring and reviewing model-training experiments.

Documented uses

  • Configure LLM fine-tuning runs with hyperparameters and methods such as LoRA or 8-bit model training.
  • Evaluate generated answers and visually track or compare model performance.
  • Chat with a fine-tuned model to gather feedback.
  • Export a model to Hugging Face Hub or use Weights & Biases integration for experiment tracking.
Before you choose

Requirements & limits

The project is public and licensed under Apache-2.0. Its documented setup targets Ubuntu with an NVIDIA GPU; a cloud-based Runpod quickstart is also linked in the repository.

  • The documented setup requires Ubuntu 16.04 or later, an NVIDIA GPU and driver version 580 or later.
  • The recommended installation uses uv with Python 3.10; larger models are recommended to have at least 24 GB of GPU memory.
  • DeepSpeed sharded training is documented for multi-GPU machines and requires NVLink plus a system CUDA Toolkit installation; CUDA 12.1 is recommended.
  • The repository warns that new functionality may not be fully backward compatible and recommends pinning versions for experiments.
  • Reinforcement-learning fine-tuning is labeled experimental; update notes describe DPO/IPO/KTO optimization in place of RLHF.

Check current requirements in the official documentation. Source-based guidance does not mean OpenViST has run or independently tested this project.

Source-based practical guide

Set up the H2O LLM Studio Python environment

Create the project’s recommended `uv` virtual environment and install its dependencies on a supported Ubuntu machine.

Before you start

  • Ubuntu 16.04 or later and at least one recent NVIDIA GPU with driver version 580 or later.
  • Python 3.10; the README recommends uv for installation.
  • For larger models, at least 24 GB of GPU memory is recommended.

Steps

  1. On Ubuntu 22.04 bare metal, if NVIDIA drivers or CUDA need installation, follow the README’s example commands to install CUDA Toolkit 13.0 and NVIDIA drivers.

  2. From the project directory, run the command below to create the uv virtual environment and install dependencies.

    Documented command
    make setup

Expected outcome

The project’s `uv` virtual environment is set up with its dependencies.

Guide limitations

  • The NVIDIA driver installation commands are an Ubuntu 22.04 bare-metal example; the README says to adjust them for other operating systems.
  • The README identifies Ubuntu 16.04+ and NVIDIA driver version 580+ as requirements; larger models are recommended to have at least 24 GB GPU memory.
  • This guide covers environment setup, not running the GUI or training a model.
Evidence and transparency

Sources & review

Source record details
Source availability
Active
Sources checked
7 October 2026
Original website title
h2oai/h2o-llmstudio · Official homepage title · retained in its source language