Helicone and Galileo are two prominent platforms in the Large Language Model (LLM) observability space, catering to different needs in monitoring, evaluation, and optimization. Helicone is an open-source platform that offers comprehensive logging, cost tracking, and debugging tools, making it suitable for a range of team sizes, from startups to enterprises, with a focus on operational metrics and developer experience. Its flexible integration methods and transparent pricing make it particularly appealing to startups. Galileo, on the other hand, is a proprietary platform designed for enterprise teams, emphasizing built-in evaluation metrics, quality assurance, and real-time guardrails to ensure output correctness and safety. It provides deep insights into model behavior with specialized tools for monitoring and protecting generative AI applications. While Helicone supports both text and image inputs and offers a more straightforward integration process, Galileo specializes in text-based LLM outputs and provides advanced evaluation capabilities. Both platforms offer free tiers and can be used together for complementary purposes, with Helicone excelling in cost tracking and comprehensive monitoring, while Galileo focuses on quality metrics and policy enforcement.