Open-source LLM observability and gateway with one-line proxy integration.
Helicone is an open-source LLM observability platform that logs requests, tracks costs and latency, caches responses, and provides a unified gateway across providers with a one-line proxy integration. It offers a free tier and usage-based paid plans, and can be self-hosted.
Free tier with a monthly request allotment; usage-based Pro plans; self-hosting available (open-source).