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Open source LLM engineering platform. Traces, evaluations, prompt management, and cost tracking.
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Frequently asked questions
What is Langfuse?▾
Open source LLM engineering platform. Traces, evaluations, prompt management, and cost tracking. It falls under the ai & ml category and uses a freemium pricing model. The project is actively maintained with 11.2k GitHub stars.
Is Langfuse free?▾
Yes, Langfuse offers a free plan that you can use without a credit card. The pricing model is freemium.
How much does Langfuse cost?▾
Langfuse is free to start. It uses a freemium pricing model. A free plan is available for small projects or evaluation. Check https://langfuse.com for the latest pricing details and plan comparison.
What category is Langfuse in?▾
Langfuse is a ai & ml tool. LLM APIs, ML platforms, vector databases You can compare Langfuse with 3 alternatives in the same category on Soft.xyz.
Is Langfuse open source?▾
Yes, Langfuse is open source and freely available on GitHub. It has 11.2k stars and 1.1k forks, with the last commit on 2026-04-28. You can inspect the source code, contribute, or self-host it.
What are alternatives to Langfuse?▾
Popular alternatives to Langfuse include Langtrace, Datadog, Sentry. Each offers different pricing, features, and community support. You can compare them side-by-side on Soft.xyz using real metrics like GitHub stars, npm downloads, and actual pricing data.
How popular is Langfuse?▾
Langfuse has 11.2k stars on GitHub and 120.0k weekly npm downloads. This places it among the most popular tools in its category. The project was last updated on 2026-04-28.