Helicone
Open-source LLM proxy for logging, monitoring, and analyzing all AI API calls
Why choose Helicone
Helicone is an open-source LLM observability platform that acts as a proxy to log, monitor, and analyze all your LLM API calls. By routing through Helicone with a single line of code change, teams get detailed analytics on costs, latency, errors, and usage patterns across all their AI agent workflows.
- Single line integration
- Works with any LLM provider
- Great cost visibility
- Open-source option available
Where it falls short
- Proxy adds small latency
- Storage limits on free tier
- Less advanced eval tools vs LangSmith
Best for these users
Pricing overview
Free up to 100,000 requests/month. Pro starts at $20/month for up to 2M requests.
Check current pricing →Key features
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The verdict
Helicone is a solid choice for developers who need single line integration. At freemium, it delivers good value. Main caveat: proxy adds small latency. Compare with alternatives before committing.