Helicone
Helicone is an open-source LLM observability platform that logs, analyzes, and monitors LLM requests across providers. It works as a proxy layer, giving teams visibility into latency, cost, errors, and prompt usage without locking them into a single framework.
freemiumRated 4.5/5Growing
Why people pick it
Open-source observability layer for LLM API calls.
Pricing snapshot
freemium
Free open-source version + paid hosted plans
Best fit
LLM request monitoring
Cost tracking
Latency analysis
Choose Helicone if you need
LLM request monitoring
Cost tracking
Latency analysis
Prompt logging
Production debugging
What Helicone does well
Open source
Provider-agnostic
Easy API-level integration
Cost and usage tracking
Works well in production
Where it can fall short
Less opinionated guidance than LangSmith
UI is more utilitarian
Advanced features require hosted plan
Alternatives
FAQ
What is Helicone best for?
Helicone is strongest for LLM request monitoring, Cost tracking, Latency analysis.
Who should consider Helicone?
Helicone fits teams that value Open source and Provider-agnostic more than Less opinionated guidance than LangSmith.
What should you watch before choosing Helicone?
Less opinionated guidance than LangSmith. UI is more utilitarian. Advanced features require hosted plan
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