Helicone
An open-source observability platform for LLM applications. Helicone acts as a proxy layer that logs all LLM API calls, providing analytics, caching, rate limiting, and cost tracking. It requires minimal code changes - just swap the base URL to route traffic through Helicone.
Implements
Concepts this tool claims to implement:
- API Gateway primary
Proxy architecture sits between application and LLM providers. Routes requests, logs interactions, applies policies. Supports OpenAI, Anthropic, Azure, and other providers.
- Caching secondary
Response caching to reduce costs and latency for repeated queries. Configurable cache policies and TTL.
- Rate Limiting secondary
Rate limiting and request throttling at the proxy layer. Protect against runaway costs and abuse.
Integration Surfaces
Details
- Vendor
- Helicone Inc.
- License
- Apache-2.0
- Runs On
- cloud, local
- Used By
- human, system
Links
Notes
Helicone's proxy approach means near-zero code changes to add observability. Open-source and can be self-hosted. The managed cloud has a generous free tier. Good for teams that want quick observability without deep integration.