What is the main difference between Helicone and LangWatch?

Helicone and LangWatch 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 LangWatch?

The choice between Helicone and LangWatch 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 LangWatch?

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

c15t – Open-source cookie banner, built for control and lightening fast modern web apps.

Learn More

Helicone vs LangWatch

Learn how Helicone and LangWatch 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.

Visit Helicone Read more

6,153stars+84(+1.4%)

Last 30 days

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

LangWatch

Tests AI agents through multi-turn simulations, LLM-based scoring, and production tracing so teams can ship reliable agents with confidence.

Visit LangWatch Read more

4,765stars+1,275(+37%)

Last 30 days

Last commit
9 hours ago
Repository age
3 years
Version
v1.2.0
License
Apache-2.0
Repository
langwatch/langwatch

Detailed Comparison

Both Helicone and LangWatch 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 6,153 stars and LangWatch having 4,765 stars on GitHub. In terms of developer contributions, Helicone has 668 forks, indicating moderate developer engagement.

LangWatch wins

Growth Momentum

LangWatch is growing faster, adding 1,275 stars in the last 30 days (+37%) against adding 84 stars for Helicone (+1.4%). LangWatch 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 2 days ago and LangWatch 9 hours ago.

Comparable

Technology Stack

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

Comparable