HELICONE
Helicone OSS LLM observability proxy gateway 1-line.
Définition
Helicone key features : (1) Proxy-based instrumentation : replace OpenAI / Anthropic / Cohere base URL with Helicone proxy (https://oai.helicone.ai/v1 instead of https://api.openai.com/v1), Helicone intercepts requests + responses + extracts metrics + costs + tokens, completely transparent to application code, 1-line setup. (2) Async logging (alternative to proxy) : send logs Helicone API asynchronously after request completes, lower latency overhead (proxy ~5-10ms latency vs async post-request 0ms). (3) Dashboards : per-user + per-feature + per-model + per-prompt metrics aggregations (requests count + tokens + cost + latency p50/p95/p99 + errors + cache hits). (4) Caching : built-in HTTP cache for LLM responses (hash request body), configurable TTL + cache key strategies, reduces costs ~30-70% repeat queries. (5) Rate Limiting : configurable rate limits per user + per API key, prevent runaway costs + abuse. (6) Cost Tracking : real-time cost computation per request (token counts x model pricing), aggregated dashboards. (7) Prompts management : prompt versioning + A/B testing + variable templates Jinja2-like. (8) Sessions : group related requests into sessions (multi-turn conversations), analyze session-level metrics. (9) Self-hosted : Helicone OSS Helm chart Kubernetes deploy enterprise. Customers : Cursor (AI code editor), Lemonade Insurance, Sundial, Magic Eden, etc. ~5000 customers 2024.
Origine
Helicone fondee 2023 par Justin Torre + Cole Gottdank Y Combinator W23 ; Seed $2M Y Combinator + angels ; ~5000+ customers 2024 ; pricing free tier 100K requests/month + paid tiers.
Exemple en contexte
Cursor AI code editor uses Helicone for LLM observability : ~10M+ requests/month code completion + chat + commands, Helicone proxy logs all OpenAI + Anthropic requests, dashboard analyzes per-user usage + costs + latency, cache reduces ~40% repeat completion costs, alerts on cost anomalies + error spikes.
Termes liés
- LangSmith — alternative integrated LangChain.