Stop paying for generic AI that doesn't know your business. Connect your proprietary repos, Wikis, and databases to train a private domain expert. Pay only for the underlying compute, own your intelligence, and keep your weights forever. Secure, sovereign, and optimized for your specific edge cases.
Chat with your fine-tuned model, see source citations in real-time.
LoRA fine-tuning with live loss curves and GPU monitoring.
Connect PDFs, Slack, Notion, APIs — all chunked and embedded automatically.
5 sources · 34,260 chunks indexed
One-click endpoints across regions with real-time traffic monitoring.
4 endpoints · 3 regions · 508 req/s
curl https://api.langtrain.xyz/v1/chat \
-H "Authorization: Bearer $LT_KEY"Side-by-side comparison with human preference training.
Compare responses · Train reward model
Explain our data retention policy to a customer
We keep your data for 90 days after account deletion. During this period, you can request a full export. After 90 days, all data is permanently purged from our systems, including backups. We comply with GDPR right-to-erasure requirements.
Your data is retained per our standard policy. Please refer to our terms of service for detailed information about data handling and retention periods.
Stop overpaying for generic AI. Pay only for the tokens you use and invest in models you own on infrastructure you control.
Build your first private brain.
Scale your AI workforce.
Full data sovereignty.
We'll notify you well in advance. You can upgrade anytime, or pay for overages. Pro plan API overages are billed at $0.50 per 1K calls.
Yes, 100%. Your weights are exported in GGUF or Safetensors format. You can download them and deploy them anywhere — zero vendor lock-in.
We train on NVIDIA A100 80GB clusters. Your fine-tuning runs on dedicated high-memory nodes to ensure maximum throughput and stability.
Absolutely. Enterprise plans include support for on-premise, VPC, and private cloud deployments using our Langtrain Cluster Agent.
Every dollar you pay per token to cloud vendors funds someone else's intelligence. Langtrain converts that recurring expense into a permanent corporate asset. Trained on your private data, deployed on your infrastructure, and owned by you forever. Eliminate vendor lock-in and secure your competitive advantage today.