Helicone

Open-source LLM observability with prompt versioning and cost tracking.

Open Source Prompt Management & Testing helicone.ai

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About Helicone

Helicone sits between your app and the model provider to log requests, track costs and manage prompt versions.

Useful if cost visibility matters as much as prompt quality.

FAQ

What is Helicone?

Open-source LLM observability with prompt versioning and cost tracking.

Is Helicone free?

Yes. Helicone is open source and free to use or self-host.

What are some alternatives to Helicone?

Agenta, Arize Phoenix, Braintrust, DeepEval, Google AI Studio.

Alternatives to Helicone

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Agenta

Open Source

Open-source platform for prompt management, evaluation and observability.

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Arize Phoenix

Open Source

Open-source tracing, evaluation and prompt playground for LLM apps.

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Braintrust

Freemium

Prompt management combined with evaluation and tracing.

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DeepEval

Open Source

Open-source framework for unit-testing LLM outputs.

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Google AI Studio

Free

Google’s free playground for writing and testing prompts with Gemini.

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Langfuse

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Open-source LLM engineering platform with prompt management, tracing and evals.

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LangSmith

Freemium

LangChain’s platform for tracing, evaluating and managing prompts.

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Latitude

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Open-source platform for prompt engineering and AI agents.

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Lunary

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Open-source monitoring and prompt management for AI apps.

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Maxim AI

Freemium

End-to-end platform for prompt experimentation, evaluation and observability.

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MLflow Prompt Registry

Open Source

Open-source MLOps platform with GenAI tracing, evaluation and a prompt registry.

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Opik

Open Source

Open-source LLM evaluation and observability by Comet.

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