What is the main difference between Helicone and OpenLLMetry?

Helicone and OpenLLMetry are both llm observability & evaluation but differ in their approach, features, and target audience. Compare their GitHub stats, technology stack, and community adoption to make the best choice.

Which is better: Helicone or OpenLLMetry?

The choice between Helicone and OpenLLMetry depends on your specific needs, technical requirements, and team preferences. Both are quality open source solutions with active communities.

Can I migrate from Helicone to OpenLLMetry?

Migration between Helicone and OpenLLMetry is possible but requires careful planning. Consider data export/import capabilities, feature parity, and potential workflow changes.

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Helicone vs OpenLLMetry

Learn how Helicone and OpenLLMetry differ in their key features, development activity, technology stack and community adoption, so you can decide which of these llm observability & evaluation is best for you.

Helicone

Open-source platform for logging, monitoring, and debugging LLM applications. Route, debug, and analyze AI apps with comprehensive observability tools.

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6,084stars+113(+1.9%)

Last 30 days

Last commit
3 days ago
Repository age
4 years
Version
v2025.08.21-1
License
Apache-2.0
Repository
helicone/helicone

OpenLLMetry

Open-source observability platform for LLMs using OpenTelemetry. Monitor performance, track costs, and debug AI applications with just 2 lines of code.

Visit OpenLLMetry Read more

7,385stars+73(+1%)

Last 30 days

Last commit
10 days ago
Repository age
3 years
Version
0.62.3
License
Apache-2.0
Repository
traceloop/openllmetry

Detailed Comparison

Both Helicone and OpenLLMetry have their unique strengths and serve similar purposes effectively. Consider your specific needs regarding popularity, growth, activity, technology, maturity, licensing and features when making your decision.

Comparable

Community & Popularity

Both tools have similar popularity levels, with Helicone having 6,084 stars and OpenLLMetry having 7,385 stars on GitHub. In terms of developer contributions, OpenLLMetry has 1,055 forks, indicating strong developer engagement.

Helicone wins

Growth Momentum

Helicone is growing faster, adding 113 stars in the last 30 days (+1.9%) against adding 73 stars for OpenLLMetry (+1%). Helicone is the smaller project of the two, so it is closing the gap rather than extending a lead.

Comparable

Development Activity

Both projects show recent activity, with Helicone last updated 3 days ago and OpenLLMetry 10 days ago.

Comparable

Technology Stack

Both tools share common technology foundations, being built with Bash, Python. However, they differ in their additional technology choices: Helicone uses JavaScript, CSS, Typescript, JSX, Next.js.

Comparable

Project Maturity

Both projects started around the same time, with Helicone beginning 4 years ago and OpenLLMetry 3 years ago.

Comparable

Licensing

Both projects use the Apache-2.0 license, providing identical terms for usage and distribution.

Comparable

Use Cases & Features

Both tools serve similar use cases in LLM Observability & Evaluation.

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