RLHF/AIF Platform

AI Teams quickly build, evaluate, and optimize LLMs with Klu

Best LLM App Platform

Trusted by hundreds of innovative AI Teams, including those driving impact at

Colab Cohorts
Air Space Intelligence
Croma Pharma

Collaborative prompt engineering

Explore, save, and collaborate with your team. Prototype completions, assistants, and workflows.

Track changes and integrate into your product development workflow.

Automatically evaluate prompt and model changes.

Klu LLM Studio Interactive Design Environment

Build with your choice of best-in-class LLMs on Klu, including

OpenAIAnthropicAzure OpenAIGCP Vertex
with Llama 2 and Mistral 7b support on Cloudflare and Replicate, Cohere and more

Rapidly iterate with insights

Roll up usage and system performance across features and teams.

Understand user preference, prompt performance, and label your data.

Curate your best data for fine-tuning custom models.

Klu Observe LLM App Platform

Build your AI moat

Quickly start with state of the art models — then train your own model on your best data.

Create unique experiences and performance through fine-tuning Davinci-002, GPT-3.5 Turbo, GPT-4, Llama 2, or Mistral.

Your data is secure and portable.


Klu Enterprise Container

Build in your cloud

Klu Enterprise Container provides a high-performance, private platform for building custom AI systems. Simplify model deployment and reduce overhead.

Host your models in one place, fine-tune models to become domain experts, and scale seamlessly with our easy-to-use, multi-tenant architecture.

Deploy OS Models
Deploy Llama 2 and Mistral models internally with embedding, fine-tuning, and inference.
Klu Platform
Self-hosted core platform
Data never leaves your cloud
Klu Enterprise Container LLM Platform

Functionality that scales with you.

All plans include FREE GPT-4-turbo runs for prototyping.


For businesses building their competitive AI moat and customer experience.


Request Demo
  • 100k Monthly Runs
  • 300k Documents
  • Everything in Pro, plus:
  • 9 Apps & Context
  • A/B Experiments
  • Evaluations
  • Fine-tuning
  • Premium Support
  • Success Team
  • FREE GPT-4-turbo

Enterprise Cloud

Enterprise-scale Klu, with activity logs, reporting, and workspace security.


Request Demo
  • 1M+ Monthly Runs
  • Unlimited Documents
  • Everything in Scale, plus:
  • Private Cloud Deployment
  • Unlimited App & Context
  • AI Analysis & Labeling
  • Roles & Permissions
  • Reporting
  • Dedicated Success Team
  • SOC2 Compliance
  • Custom Services
  • FREE GPT-4-turbo

By 2030, every product will be powered by AI, and personalized to each user. Let’s get started today.

Klu transforms how AI Engineers & Teams work, enabling rapid iteration based on model, prompt, and user insights.

The future is not about building AI systems to replace humans, but about building new functionality that help people finish boring work faster, spot blindspots, and uncover new opportunities to do their best work.

Klu enables every software product to personalize to the person using it, and help them learn and accomplish tasks faster, better, and more efficiently.

Founding Team

  • leading LLM App Platform CEO

    Stephen M. Walker II

    Co-Founder / CEO

  • leading LLM App platform CTO

    Stefan Sabev

    Co-Founder / CTO

10 Minutes

From Zero to Production

Gather LLM app insights in under 10 minutes.

10x Faster

Teams ship 10x Faster with Klu

Move faster than the competition, learn from customers, and create a competitive moat around your business.

90% Cost Savings

Augment Human Labeling

Klu's RLAIF labeling matches human-level performance and preference.