Helicone AI is highly praised for its open-source observability tools, particularly for developers working with LLMs. Makers of Persana AI for Prospecting highlight its ability to simplify debugging and optimization, offering valuable insights into AI model performance. Potis AI makers find it ideal for LLM observability, while Codebuff makers appreciate its ease of use and cost-tracking capabilities. Users commend its intuitive interface, quick integration, and responsive team, making it a favored choice for monitoring AI applications.