Helicone/helicone

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🔍 Observability	🕸️ Agent Tracing	🚂 LLM Routing
💰 Cost & Latency Tracking	📚 Datasets & Fine-tuning	🎛️ Automatic Fallbacks

</div> <p align="center" style="margin: 0; padding: 0;"> <img alt="helicone logo" src="https://marketing-assets-helicone.s3.us-west-2.amazonaws.com/Twitter_Cover_A1.png" style="display: block; margin: 0; padding: 0;"> </p> </br> <p align="center"> <a href='https://github.com/helicone/helicone/graphs/contributors'><img src='https://img.shields.io/github/contributors/helicone/helicone?style=flat-square' alt='Contributors' /></a> <a href='https://github.com/helicone/helicone/stargazers'><img alt="GitHub stars" src="https://img.shields.io/github/stars/helicone/helicone?style=flat-square"/></a> <a href='https://github.com/helicone/helicone/pulse'><img alt="GitHub commit activity" src="https://img.shields.io/github/commit-activity/m/helicone/helicone?style=flat-square"/></a> <a href='https://github.com/helicone/helicone/issues?q=is%3Aissue+is%3Aclosed'><img alt="GitHub closed issues" src="https://img.shields.io/github/issues-closed/helicone/helicone?style=flat-square"/></a> <a href='https://www.ycombinator.com/companies/helicone'><img alt="Y Combinator" src="https://img.shields.io/badge/Y%20Combinator-Helicone-orange?style=flat-square"/></a> </p> <p align="center"> <a href="https://docs.helicone.ai/">Docs</a> • <a href="https://www.helicone.ai/changelog">Changelog</a> • <a href="https://github.com/helicone/helicone/issues">Bug reports</a> • <a href="https://helicone.ai/demo">See Helicone in Action! (Free)</a> </p>

Helicone is an AI Gateway & LLM Observability Platform for AI Engineers

• 🌐 AI Gateway: Access 100+ AI models with 1 API key through the OpenAI API with intelligent routing and automatic fallbacks. Get started in 2 minutes.
• 🔌 Quick integration: One-line of code to log all your requests from OpenAI, Anthropic, LangChain, Gemini, Vercel AI SDK, and more.
• 📊 Observe: Inspect and debug traces & sessions for agents, chatbots, document processing pipelines, and more
• 📈 Analyze: Track metrics like cost, latency, quality, and more. Export to PostHog in one-line for custom dashboards
• 🎮 Playground: Rapidly test and iterate on prompts, sessions and traces in our UI.
• 🧠 Prompt Management: Version prompts using production data. Deploy prompts through the AI Gateway without code changes. Your prompts remain under your control, always accessible.
• 🎛️ Fine-tune: Fine-tune with one of our fine-tuning partners: OpenPipe or Autonomi (more coming soon)
• 🛡️ Enterprise Ready: SOC 2 and GDPR compliant

🎁 Generous monthly free tier (10k requests/month) - No credit card required!

<img src="https://github.com/user-attachments/assets/e16332e9-d642-427e-b3ce-1a74a17f7b2c" alt="Open Sourced LLM Observability & AI Gateway Platform" width="600">

Quick Start ⚡️

1. Get your API key by signing up here and add credits at helicone.ai/credits

2. Update the baseURL in your code and add your API key.

   import OpenAI from "openai";
   
   const client = new OpenAI({
     baseURL: "https://ai-gateway.helicone.ai",
     apiKey: process.env.HELICONE_API_KEY,
   });
   
   const response = await client.chat.completions.create({
     model: "gpt-4o-mini",  // claude-sonnet-4, gemini-2.0-flash or any model from https://www.helicone.ai/models
     messages: [{ role: "user", content: "Hello!" }]
   });
   

3. 🎉 You're all set! View your logs at Helicone and access 100+ models through one API.

Self-Hosting Open Source LLM Observability

Docker

Helicone is simple to self-host and update. To get started locally, just use our docker-compose file.

# Clone the repository
git clone https://github.com/Helicone/helicone.git
cd docker
cp .env.example .env

# Start the services
./helicone-compose.sh helicone up

Helm

For Enterprise workloads, we also have a production-ready Helm chart available. To access, contact us at enterprise@helicone.ai.