Helicone

What Helicone is

Helicone is a gateway and observability layer for model-powered applications. Requests pass through it, and it records what happened: which model ran, how long it took, what it cost and where errors appeared, which is what teams need once an application has real traffic.

What you can do with it

• Record and analyse model calls
• Track cost, latency and error rates
• Route requests between models or providers
• Debug agents and chat products
• Keep a history of prompts and responses

Who it is for

• Development teams with real traffic
• Teams managing model spend
• Engineers debugging agent behaviour

What to watch out for

• A gateway sees every prompt and response, so it becomes a sensitive data store; redaction and retention matter
• Logs may contain customer personal data, which brings privacy obligations with it
• Adding a proxy adds a failure point; plan what happens if it is unavailable
• Cost visibility only helps if someone acts on it