H
Helicone
Open-source LLM observability proxy with one-line integration
Open Sourcefreemium
About
Helicone is an open-source observability platform for LLMs that works as a transparent proxy — add one line to your base URL and immediately get request logging, cost tracking, latency histograms, and user-level analytics. It supports caching, rate limiting, and prompt management out of the box, making it one of the fastest ways to add production visibility to any OpenAI-compatible API call.
Details
| Type | observability |
| Integrations | openai, anthropic, azure-openai, litellm, langchain |
| Language | python, typescript, go, ruby |
Tags
observabilityproxycost-trackingllm-opsopen-source
Quick Info
- Organization
- Helicone
- Pricing
- $20/mo
- Free Tier
- Yes
- Updated
- Apr 1, 2026
5.4K2d ago97
Also in Dev Tools
C
Crawl4AI
Open-source web crawler optimized for LLMs and AI agents — 62K+ stars
OSSFree
unclecode
63.1Ktoday72
F
Firecrawl
Web scraping API built for LLMs — turn any website into LLM-ready data — 89K+ stars
OSSfreemium
Mendable
102.1Ktoday138
H
Headroom Context Optimization
Reduce LLM API costs by 50-90% through advanced context compression
OSSFree
Shubham Saboo
104.2Ktoday74