---
title: "helicone"
type: "tool"
slug: "helicone-helicone"
canonical_url: "https://www.graphcanon.com/tools/helicone-helicone"
github_url: "https://github.com/Helicone/helicone"
homepage_url: "https://www.helicone.ai"
stars: 5916
forks: 622
primary_language: "TypeScript"
license: "Apache-2.0"
categories: ["evaluation-observability", "llm-frameworks"]
tags: ["agent-monitoring", "evaluation", "llm-cost", "large-language-models", "gpt", "langchain", "analytics", "llm-observability"]
updated_at: "2026-07-07T18:38:58.470866+00:00"
---

# helicone

> Open source LLM observability platform

Helicone is an AI Gateway & LLM Observability Platform for AI Engineers, offering cost tracking, agent tracing, and LLM routing functionalities.

## Facts

- Repository: https://github.com/Helicone/helicone
- Homepage: https://www.helicone.ai
- Stars: 5,916 · Forks: 622 · Open issues: 123 · Watchers: 55
- Primary language: TypeScript
- License: Apache-2.0
- Last pushed: 2026-07-05T05:55:34+00:00

## Categories

- [Evaluation & Observability](/categories/evaluation-observability.md)
- [LLM Frameworks](/categories/llm-frameworks.md)

## Tags

agent-monitoring, evaluation, llm-cost, large language models, gpt, langchain, analytics, llm-observability

## Related tools

- [ollama](/tools/ollama-ollama.md) - Get up and running with Kimi-K2.6, GLM-5.1, MiniMax, DeepSeek, gpt-oss, Qwen, Gemma and other models. (★ 175,659)
- [prompts.chat](/tools/f-prompts-chat.md) - The world's largest open-source prompt library for AI (★ 165,019)
- [transformers](/tools/huggingface-transformers.md) - 🤗 Transformers: the model-definition framework for state-of-the-art machine learning models (★ 162,347)
- [langflow](/tools/langflow-ai-langflow.md) - Langflow is a powerful platform for building and deploying AI-powered agents and workflows. (★ 151,298)
- [open-webui](/tools/open-webui-open-webui.md) - User-friendly AI Interface (Supports Ollama, OpenAI API, ...) (★ 144,575)
- [awesome-llm-apps](/tools/shubhamsaboo-awesome-llm-apps.md) - 100+ AI Agent & RAG apps you can actually run — clone, customize, ship. (★ 116,702)
- [LLMs-from-scratch](/tools/rasbt-llms-from-scratch.md) - Implement a ChatGPT-like LLM in PyTorch from scratch (★ 98,711)
- [TradingAgents](/tools/tauricresearch-tradingagents.md) - TradingAgents: Multi-Agents LLM Financial Trading Framework (★ 91,610)

## README (excerpt)

```text
<div align="center">

| 🔍 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.](https://docs.helicone.ai/gateway/overview)
- 🔌 **Quick integration**: One-line of code to log all your requests from [OpenAI](https://www.helicone.ai/models?providers=openai), [Anthropic](https://www.helicone.ai/models?providers=anthropic), [LangChain](https://docs.helicone.ai/gateway/integrations/langchain), [Gemini](https://www.helicone.ai/models?providers=gemini%2Cgoogle-ai-studio), [Vercel AI SDK](https://docs.helicone.ai/gateway/integrations/vercel-ai-sdk), and [more](https://docs.helicone.ai/gateway/overview).
- 📊 **Observe**: Inspect and debug traces & [sessions](https://docs.helicone.ai/features/sessions) for agents, chatbots, document processing pipelines, and more
- 📈 **Analyze**: Track metrics like [cost](https://docs.helicone.ai/faq/how-we-calculate-cost#developer), latency, quality, and more. Export to [PostHog](https://docs.helicone.ai/getting-started/integration-method/posthog) in one-line for custom dashboards
- 🎮 **Playground**: Rapidly test and iterate on prompts, sessions and traces in our UI.
- 🧠 **Prompt Management**: [Version prompts](https://docs.helicone.ai/features/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](https://openpipe.ai/) or [Autonomi](https://www.autonomi.ai/) (more coming soon)
- 🛡️ **Enterprise Ready**: SOC 2 and GDPR compliant

> 🎁 Generous monthly [free tier](https://www.helicone.ai/pricing) (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](https://helicone.ai/signup) and add credits at [helicone.ai/credits](https://us.helicone.ai/credits)

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

   ```typescript
   import OpenAI from "openai";

   const client = new OpenAI({
     baseURL:
```

---

**Machine-readable endpoints**

- JSON: [`/api/graphcanon/tools/helicone-helicone`](/api/graphcanon/tools/helicone-helicone)
- LLM index: [/llms.txt](/llms.txt)
- Full corpus: [/llms-full.txt](/llms-full.txt)

_GraphCanon - The knowledge graph for AI development. https://www.graphcanon.com/_