Helicone
Helicone is an open-source LLM observability platform for monitoring, evaluating, and optimizing AI API usage. It helps developers track requests, latency, cost, errors, user behavior, and prompt performance across model providers with minimal integration work. Teams can use Helicone to debug production issues, compare prompt versions, control spending, cache responses, and understand which users or workflows drive the most model activity. The tool is best for startups, AI engineers, and product teams that need practical visibility into LLM systems without building analytics infrastructure from scratch. Helicone stands out because it is developer-friendly, transparent, and focused on the operational details that matter once an AI feature has real traffic.
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