About Helicone
An open-source LLM observability and gateway platform that logs requests, provides analytics, caching/routing, prompt experiments, and a unified API to monitor model performance and cost. ([helicone.ai](https://www.helicone.ai/?utm_source=openai))
Key Features
- Automatic logging and metrics for LLM requests (cost, latency, usage) via a one-line integration or gateway.
- Prompt management and experiments (regression testing, versioning, dataset comparisons).
- AI Gateway for unified access to many providers, caching to lower costs, and provider routing for reliability.
- Open-source OSS components plus hosted/cloud options and developer-focused docs/SDKs.
Use Cases & Best For
Developers and platform teams who want LLM observability, caching, and a unified gateway
Organizations seeking an open-source observability stack for production LLM telemetry and prompt experiments
About Prompt Engineering
Optimize and manage prompts