Helicone Freemium

Helicone is an LLM observability platform. You point your API base URL at their proxy, and every request gets logged with cost, latency, token counts and the full prompt, without writing instrumentation code.

What is Helicone?

Helicone is a monitoring layer for teams shipping LLM features. Instead of scattering logging calls through your code, you change the base URL to Helicone’s and it forwards to OpenAI, Anthropic and others. It is open source and can be self-hosted, which matters if prompts contain sensitive data.

Helicone Product Features

• Proxy logging: captures prompts and responses with a one-line change.
• Cost tracking: per-request spend broken down by model and user.
• Caching: returns stored responses for identical prompts to cut spend.
• Latency dashboards: charts p50 and p95 response times.
• Self-hosting: run the whole stack on your own infrastructure.

Helicone Product Highlights

The one-line-onboarding is what wins teams over; the caching feature can cut repeat-call bills noticeably. Watch the fine print: routing traffic through a third-party proxy adds a hop and a trust question, and the free tier caps logged requests per month. Self-hosting removes the trust issue but adds ops work.

Who Should Use Helicone?

Good for engineering teams running LLM features in production who need cost and latency visibility. Overkill for a weekend project making a few hundred calls.

Helicone Use Cases

• Tracking which users drive the most token spend.
• Debugging a slow endpoint with per-call latency data.
• Cutting costs by caching repeated classification prompts.
• Auditing prompts before a compliance review.
• Detecting error-rate spikes after a model upgrade.

Quick Summary

• Helicone is an open-source LLM observability platform.
• It logs requests via a proxy URL change, with no SDK required.
• It tracks cost and latency and supports response caching.
• It offers a free tier and self-hosting for privacy-sensitive teams.