Helicone reviews

LLM observability platform: logging, costs, latency, prompt/completion analysis, evaluations, caching. Proxy gateway or native integration. Open-source and managed cloud. Since March 2026: maintenance mode (acquired by Mintlify).

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About

In practice. What you can do with Helicone.

Key strengths: Open-source (MIT) for self-hosting.; Gateway pass-through (300+ models).; Detailed cost tracking.; Caching and optimizations..

Helicone was standard for LLM observability; since Mintlify acquisition (March 2026), prefer active alternatives.

Practical uses

Track LLM API costs in production.
Monitor latency and errors.
A/B test models and prompts.

Features & use cases

Ai general

Pros and cons. What Helicone does well, and what to expect.

Pros

Open-source (MIT) for self-hosting.
Gateway pass-through (300+ models).
Detailed cost tracking.
Caching and optimizations.

Cons

Project in maintenance mode since March 2026.
Reduced team post-acquisition.
More active alternatives emerging.

When it makes sense. Keep Helicone, or challenge it?

Keep if

You deploy LLM apps to production.
You want to track costs and performance.

Challenge if

You don't have an LLM app deployed.
The Helicone project is in maintenance (since March 2026).

Our verdict. What to know about Helicone.

Why this verdict

Excellent

Helicone is hard to replace short-term, a free tier to test before paying, clearly documented use cases.

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