helicone

Why we included this project

Most teams only discover how much a model-backed feature costs when the provider invoice lands. Helicone fixes that blind spot by letting you point your existing OpenAI, Anthropic, or LangChain client at its dashboard: change the base URL and every request, response, token count, and latency figure starts flowing into a readable interface. You can trace individual agent sessions, watch spend and response times per provider or prompt template, and run evaluations on the traffic you've already logged rather than a separate test set. It also works as a thin gateway, so a single endpoint can reach more than a hundred models with automatic fallbacks if a provider degrades. For a small team that wants production visibility and predictable cost control without assembling its own telemetry stack, this self-hostable project covers most of that work in one deploy.