Langtrain Logo
Langtrain
PricingDocsBlog
Sign inStart training

About

Infrastructure formodels you own.

Langtrain helps developers fine-tune open models on their own data and run them on their own terms, including fully offline.

  • Open-source packages4langtrain-ai · langtune · langvision · plimai
  • Ways to train2Your own GPU (Langtune) · Langtrain GPUs

Our story

Built for builders. Fine-tuning in a few lines.

Developers were spending more time on CUDA versions, training scripts and serving than on their product. We started Langtrain so that fine-tuning an open model is a few function calls, and the result is yours to run anywhere.

train.py
1
2
3
4
5
6
7
from langtune import FastLanguageModel

model, tokenizer = FastLanguageModel.from_pretrained("meta-llama/Llama-3.1-8B")
model = FastLanguageModel.get_peft_model(model, r=16, method="qlora")

FastLanguageModel.train(model, tokenizer, dataset, output_dir="./output")
FastLanguageModel.save_pretrained(model, tokenizer, "./my-assistant", merge_before_save=True)

What drives us

Four principles. Every decision goes through them.

  • You own what you train

    Weights are standard files you keep: on your disk after local training, or in your own Hugging Face repo after a cloud run.

  • Open by default

    Langtune and Langvision are MIT licensed. Read the code, change it and use it commercially.

  • No ML team required

    Sensible defaults and a dataset check that suggests a model and setup, so a developer can train a useful model.

  • Say what works today

    We document features that exist and label the ones that don't, so what you read is what you can run.

The people

Built by a small team that ships.

Pritesh Raj

Pritesh Raj

Co-founder, CEO & CTO

Leads product and engineering at Langtrain, and wrote the first versions of Langtune and Langvision.

Help us build it.We're hiring.

See the open roles, or talk to us about what you're building.

View open rolesMeet the team
Langtrain Logo
Langtrain

The fine-tuning platform for production LLMs.
Built for builders who demand sovereignty.

  • Github
  • HuggingFace
System status

Product

  • Langtrain Studio
  • Langtrain SDK
  • Langtune
  • Langvision
  • Model Hub
  • Downloads
  • Pricing
  • Enterprise

Use Cases

  • Customer Support AI
  • Internal Code Assistants
  • Healthcare
  • Financial Services
  • Legal Document QA
  • E-Commerce & Retail
  • Education & EdTech
  • Manufacturing
  • Research & Data Teams
  • All Use Cases

Resources

  • Documentation
  • Quick Start
  • API Reference
  • Python SDK
  • Node SDK
  • Blog(opens in a new tab)
  • ComparisonsNew
  • GlossaryNew
  • Changelog
  • Status

Company

  • About Us
  • Careers
  • Contact
  • Community
  • Support
Langtrain

© 2026 QUADTREE AI TECHNOLOGIES PRIVATE LIMITED.

  • Terms of Service
  • Privacy Policy
  • Cookie Policy
  • Data Processing Agreement
  • Made with ♥love in India