Helicone
OPEN SOURCELLM observability proxy — log, monitor, and analyze every AI request with one line.
Free / $20/mo Free tier available
About
Helicone is an open-source LLM observability platform built as a proxy layer. Route requests through Helicone to get automatic logging, cost tracking, user-level analytics, caching, and rate limiting with zero code changes.
Features
Proxy-based automatic logging
Cost & token analytics
User-level tracking
Request caching
Rate limiting
Prompt templating
Specifications
| LLM Tracing | |
| Evaluation | |
| Self-Host | |
| Open Source | |
| Alerting | |
| Starting Price | Free / $20/mo |