LLM Gateway & Routing · Vendor file

Helicone

Open-source LLM observability and gateway platform with request logging and analytics

Active · verified June 2026

Categories Helicone serves

The B4 Index places Helicone in 3 categories. Each category page lays out the build-versus-buy considerations for that decision.

LLM Gateway & Routing Primary Free 10K requests. Pro $79/month. Team $799/month.

Semantic Caching & LLM Cost-Routing Layer Primary Free; Pro $20/seat/mo; caching + routing

LLM Observability & Agent Tracing Platform Free up to 10K requests/mo; paid from ~$49–$79/mo; self-hosted open-source free

The B4 Index scores every software category on two axes, strategic differentiation and AI feasibility, to classify it Build, Buy, Bridge, or Beware. Vendor facts here are independent of that call. See the full methodology.