LLMOps and observability
Helicone: review, pricing, data and alternatives
Helicone records model requests and responses and measures costs and response times. It serves people who want to inspect agent execution, test instructions or switch providers after a failure. A free tier exists; the first paid plan costs $79 per month. Access and transparency score: 61/100, #12 of 18 in its category.
What is Helicone?
Helicone records model requests and responses and measures costs and response times. It serves people who want to inspect agent execution, test instructions or switch providers after a failure.
According to its documentation, Helicone lets you:
- record model requests and responses
- measure costs and response times
- examine an agent's execution steps
- test different instructions
- switch to another provider in case of failure
We file it under LLMOps and observability, the category of tools to evaluate, monitor and debug AI apps, and it also overlaps with model APIs and platforms. The category lists 18 verified tools on this site.
The publisher is Helicone, Inc., based in United States.
Who is it for?
It is mostly useful to these profiles: developers and data analysts. The need it covers is simple to state: evaluate, monitor and debug AI apps.
Helicone is a good candidate if:
- you want to try before paying
- you plan to connect it to your tools or automations through its API
- you want to read the code or host it yourself
Before deciding, run a trial on a real task and measure the time saved: it is the only criterion that really counts.
How much does Helicone cost?
Pricing model: open source (public code). A free plan is offered, usually limited in volume or features.
The first paid plan costs $79 per month (Pro; additional charges related to requests and storage may apply), according to the pricing page, checked on October 24, 2026.
Per month, that is more expensive than the category median ($49 per month, based on tools with a published price).
To estimate what the same work would cost done directly with an AI model, use our API price calculator. Prices change often: always check the official site before subscribing.
Data and privacy
The publisher does not clearly state where data is hosted. Assume your content may leave your region.
For professional use, check that a data processing agreement (DPA) is offered, and do not send customers' personal data or confidential documents without one.
No export feature is documented: keep a copy of your content elsewhere.
Three habits apply to every AI tool:
- turn off the use of your content for training if the option exists
- use a work account separate from your personal account
- review everything the tool produces before publishing or sending it
Platforms, languages and API
Helicone runs on: web browser and API.
Interface languages: English.
A public API lets you call it from your own programs or an automation tool, and plug it into an AI agent.
The source code is public: HeliconeHelicone/helicone.
How we scored it
Our 61/100 score does not judge output quality: it measures what can be publicly verified about access to the tool, its openness and how far the publisher can be trusted.
| Criterion | Points | What counts |
|---|---|---|
| Access | 25/30 | free tier, published price, French interface |
| Openness | 20/30 | API, data export, open code |
| Trust | 16/40 | identified publisher, declared hosting, age, presence in reference lists |
The full calculation is explained on our method page.
Comparison with alternatives
Helicone against other tools in the lLMOps and observability category:
Verdict
Helicone is a decent option; compare its price and terms with the category leaders.
Strengths
- Free tier to try it
- Public API
- Public source code
Limitations
- More expensive than its category median
- Data hosting not disclosed
- Data export not documented
Avoid if…
- You handle sensitive personal data without a processing agreement
- You need to easily retrieve your full history
Alternatives
Categories and jobs
Learn more
Frequently asked questions
Is Helicone free?
Yes, a free plan exists, with usage limits. The first paid plan costs $79 per month.
Where is Helicone data stored?
The publisher does not clearly say so in its public documentation.
Does Helicone have an API?
Yes, a public API is documented.
What are the alternatives to Helicone?
In the same category: Langfuse, LangSmith, Opik, and Arize Phoenix.
Helicone or Langfuse: which one to choose?
Helicone starts at $79 per month, Langfuse at $29 per month and our score is 61/100 for Helicone and 95/100 for Langfuse. Try both on the same task before paying.
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Neutrality. No affiliate links. No vendor pays to be reviewed, rated or ranked. Reviews are directed by François Chollet, neutral and factual, and every data point is dated and sourced. How we score