Helicone
Helicone is an open-source observability platform designed for monitoring, logging, and analyzing usage of Large Language Model (LLM) APIs, such as those from OpenAI, Anthropic, and others. It provides developers with tools to track API calls, manage costs, debug issues, and gain insights into LLM performance and usage patterns. By acting as a proxy between applications and LLM providers, it enables detailed analytics without modifying existing code.
Developers should use Helicone when building applications that rely heavily on LLM APIs to ensure operational efficiency, cost control, and reliability. It is particularly valuable for production environments where monitoring request latency, token usage, and error rates is critical for optimizing performance and budgeting. Use cases include AI-powered chatbots, content generation tools, and data analysis pipelines that require transparent oversight of LLM interactions.