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MonitoringFreemiumOpen Source
HELICONE
One line of code to observe, optimize, and replay every LLM call
Apache-2.0
ABOUT
LLM costs creep up silently — you don't know which prompts are expensive until the bill arrives, and debugging a bad response means guessing at what the model actually received. Helicone is a proxy that intercepts every LLM API call, logs inputs/outputs/latency/cost, and exposes this in a dashboard. It also caches identical requests (zero cost on repeats) and lets you build eval datasets from real production traffic with one click.
INSTALL
npm install @helicone/heliconeINTEGRATION GUIDE
1. Track per-user and per-feature LLM costs without changing your prompt code
2. Cache repeated LLM calls to reduce costs by 30-70% on predictable queries
3. Build a dataset from production requests to fine-tune a smaller, cheaper model
4. Set up alerts when a user is about to exceed a cost threshold
5. Debug a production hallucination by replaying the exact request that caused it
TAGS
pythontypescriptobservabilitycachingcost-trackingopenai-compatibleself-hostable