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Helicone

Helicone is an open-source LLM observability and analytics platform that captures requests, traces and sessions to help developers debug, evaluate and optimize model usage.

Introduction

Helicone is an open-source LLM observability and analytics platform. With one line of integration, it captures requests, sessions and traces, offering visualization, metrics and cost/latency analysis to help developers and ops teams improve the quality of model calls.

Key Features

  • One-line integration: quick logging for OpenAI, Anthropic, Gemini and other providers.
  • Tracing & playback: inspect requests and sessions for fine-grained debugging.
  • Metrics & analytics: cost, latency and quality metrics with export options (e.g. PostHog).
  • Prompt management: versioning and A/B testing for prompts and experiments.
  • Cloud & self-hosting: Helicone Cloud or self-hosted deployment via Docker/Helm.

Use Cases

  • Development & debugging: observe request flows and context in real time to find issues.
  • Cost optimization: analyze cost and latency across models and strategies.
  • Quality evaluation: compare prompt/model variants and run automated evaluations.
  • Compliance & auditing: preserve traces and sessions for governance and audits.

Technical Highlights

  • Multi-language SDKs: JavaScript/TypeScript and Python SDKs with example projects.
  • Distributed analytics: uses ClickHouse for large-scale log aggregation and analysis.
  • Cloud-native ready: Docker Compose and Helm Chart for Kubernetes deployments.

Comments

Helicone
Resource Info
🌱 Open Source 👀 Observation