LT
Your AI Infrastructure

Your Data. Your Model.
Your Weights.

Own your intelligence. Langtrain is the sovereign AI infrastructure for training private models on your proprietary data—without the "Intelligence Tax" of closed APIs.

Zero Data Egress100+ Base ModelsHIPAA · SOC2 ReadyFree to Start
your-ai-system.langtrain
live
1
Your Knowledge
8 sources connected
📄PDFs
🌐Websites
🎬YouTube
🗄Databases
📊CSV
💼CRM
📝Docs
📋Notes
2
Langtrain Core
training
Fine-Tuning100%
Knowledge Deepening92%
Context Expansion87%
Agent Builder78%
3
Deploy Everywhere
6 channels
📱
WhatsApp
📸
Instagram
💬
Slack
⚡
API
🌐
Website
💼
CRM

Knowledge → Intelligence → Deployment

L
Langtrain

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

GithubHuggingFace
All Systems Operational

Product

  • Fine-Tuning
  • PlaygroundNew
  • RLHF & Alignment
  • Guardrails
  • AI Agents
  • Model Hub
  • Pricing
  • Enterprise

Use Cases

  • Customer Support AI
  • Internal Code Assistants
  • Healthcare & HIPAA
  • Financial Services
  • Legal Document QA

Resources

  • Documentation
  • Quick Start
  • API Reference
  • Python SDK
  • Node SDK
  • Blog
  • Changelog
  • Status

Company

  • About Us
  • Careers
  • Contact
  • Community
  • Support

Legal

  • Terms of Service
  • Privacy Policy
  • Cookie Policy
  • Data Processing Agreement
© 2026 Langtrain AI Private Limited. All rights reserved.
PrivacyTermsMade with ♥ in India

LANGTRAIN

100+Base modelsLlama · Mistral · Phi · Gemma
<38 minAvg fine-tune timeFrom data to deployed model
100%Data stays privateZero egress to third parties
8+Deploy channelsWhatsApp · Slack · API · Web

Fine-tune models from the world's leading AI labs

HuggingFace
HuggingFace
Google
Google
Meta
Meta
Azure
Microsoft
AWS
Amazon
Nvidia
NVIDIA
HuggingFace
HuggingFace
Google
Google
Meta
Meta
Azure
Microsoft
AWS
Amazon
Nvidia
NVIDIA
HuggingFace
HuggingFace
Google
Google
Meta
Meta
Azure
Microsoft
AWS
Amazon
Nvidia
NVIDIA

How It Works

Four steps to your own AI.

langtrain — upload knowledge
Step 01
Drop files or connect sources
📄
PDFs & Documents
12 files
🌐
Website Crawl
docs.company.com
🎬
YouTube Transcripts
8 videos
🗄
Database Sync
PostgreSQL
💼
CRM Import
HubSpot
📋
Notes & Markdown
34 notes

First model trained in under 38 minutes.

For Everyone

One platform. Every use case.

personal-knowledge-base
personal

Personal Knowledge Base

2,847
Training Data
Research papers
Book notes
Journal entries
Web bookmarks
Active Agents
🔬
Research Assistant
active
✍️
Writing Coach
active
Notes connected2,847

Knowledge Depth

Teach AI your world.

generic-aishallow
~20%
knowledge depth
Public web data22%
Common knowledge18%
Generic patterns12%
✕Domain knowledge
✕Your context
✕Expert judgment
langtrain-aideep intelligence
94%
knowledge depth
Surface knowledge100%
Domain awareness100%
Deep expertise92%
Institutional memory88%
Expert judgment78%

Your data makes your AI smarter. Knowledge compounds.

Connector Ecosystem

One AI brain. Everywhere you work.

Data Sources
📄PDF
🌐Web
🗄SQL
📊CSV
🎬Video
📋Notion
LTbrain
📱WhatsApp
Deployment Channels

Agent Marketplace

Your AI operating layer. Not just model training.

8 ready-to-deploy agents
Build custom agent
any workflow · any tool
langtrain — support-agent
live
deployed
Support Agent
24/7 intelligent support
1,240Resolved/day
4.9★CSAT
<2sResponse
Live conversation
My order hasn't arrived yet
agent
I've checked your order #4821. It shipped yesterday and will arrive by Thursday. Want tracking details?
Yes please
agent
Tracking: FX849201. Current location: Chicago sorting facility, 2 stops from you.

Ownership & Privacy

Your model. Your infrastructure.

Run everywhere. Your data never touches a third-party server. You own the model weights, the knowledge, and every inference.

terminal — local
your hardware
$langtrain serve --model ./my-model
✓Model loaded: 7B params | 4.2GB VRAM
✓Inference engine: llama.cpp
✓API ready at localhost:8080
→All compute stays on your machine
your-infra.privatesecured
🌐Your Application
private
🤖Langtrain Agent Layer
private
🧠Your Fine-Tuned Model
private
🔒Your Private Infrastructure
private
Zero data egress · All traffic stays internal
Ownership guarantees
Zero data egress to third parties
100% model weight ownership
No vendor lock-in, ever
Full audit trails & logging
Role-based access control
End-to-end encryption
Unlike cloud AI APIs

Your training data, model weights, and inference logs never leave your controlled environment.

HIPAA ReadySOC2 Type IIGDPR CompliantISO 27001Air-gap Support

No data egress. Your weights. Forever.

Why Langtrain

Build an asset. Don't pay a token tax.

Without Langtrain
cloud-apirenting
Monthly API spend↑ $4,200
Data sent to vendor servers
Training data exposed
Token-based billing
Unpredictable costs
No model ownership
Zero residual value
Vendor decides capabilities
No customization
Rate limits & downtime
Availability not yours
You're renting intelligence. Not building an asset.
With Langtrain
langtrainowned
Model asset value↑ compounds
Data stays on your infrastructure
Zero egress, full control
Flat predictable pricing
No token anxiety
100% model weight ownership
Permanent asset
Customized for your domain
94% knowledge depth
Deploy to any channel, anytime
No rate limits
Build an asset. Own it forever.
Feature
Langtrainrecommended
Hosted APIs
DIY Hosting
100% model weight ownership
Zero infrastructure setup
Deploy with one command
Flat, predictable pricing
RLHF & human preference alignment
Built-in AI guardrails (PII + custom)
Base vs fine-tuned playground
Production monitoring (LangVision)
Autonomous agent deployment
Desktop app & CLI for local runs
Get started today
Vendor fees
Months of setup
Free to start · No credit card

Your AI. Your rules.
Own it forever.

Stop renting intelligence. Build your own deeply trained AI model, deploy it as agents, and connect it everywhere.

  • Train on your private data — locally or in the cloud
  • Own your model weights, 100%
  • Deploy agents to WhatsApp, Slack, REST API & more
  • Free for individuals and open-source teams
How it works
Upload
Your knowledge
Train
Build intelligence
Agents
Create AI workers
Deploy
Launch everywhere
100+
Base models
Llama · Mistral · Phi · Gemma
<38 min
Avg fine-tune time
From raw data to deployed model
100%
Data private
Zero egress, your infra

Build your own AI brain. Train it. Deepen it. Connect it. Deploy it.