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Helicone AI

An AI gateway and LLM observability service that routes, logs and analyzes requests from your AI apps, with a prompt playground, datasets, rate limits and alerts, and a free trial with no card.

Observability & evalsModel APIs

What it does

Helicone is described on its homepage as an AI gateway and LLM observability service. Teams use it to route, debug and analyze their AI applications. A banner on the page announces that Helicone is joining Mintlify. The dashboard shown on the page has views for requests, segments, sessions, users and HQL. A section for improving prompts includes prompts, datasets and a playground. A monitoring section covers rate limits and alerts. Integrations listed include OpenAI, Anthropic, Azure, LiteLLM, Anyscale, Together AI and OpenRouter, each with a setup guide in the documentation. The site also links to a models page, a stats page and blog posts about agent frameworks, the LLM stack and API providers. You can try it free for seven days without a credit card. A pricing page is linked, but this page gives no plan details.

Capabilities

  • AI gateway for routing requests to model providers
  • Request, segment, session, user and HQL views
  • Prompt playground and datasets for improving prompts
  • Rate limits and alerts for monitoring
  • Integration guides for OpenAI, Anthropic, Azure, LiteLLM and more
  • Seven-day free trial with no credit card

When to use it

  • You want to see and debug the requests your AI app sends to model providers
  • You need rate limits and alerts around LLM traffic
  • You want to test and refine prompts against logged data