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Helicone/helicone

๐ŸงŠ Open source LLM observability platform. One line of code to monitor, evaluate, and experiment. YC W23 ๐Ÿ“

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OwnerHelicone
License (as declared)Apache-2.0
Stars6,222
Forks683
Main languageTypeScript
Created31 January 2023
Last updated at source10 October 2026
typescriptagent-monitoringanalyticsevaluationgptlangchainlarge-language-modelsllama-indexllmllm-costllm-evaluationllm-observabilityllmopsmonitoringopen-sourceopenaiplaygroundprompt-engineeringprompt-managementycombinator
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