Doubling Down on Open Source

June 4, 2025 Doubling Down on Open Source Today we are open sourcing all remaining Product Features in Langfuse under the MIT license Marc Clemens Max The LLM landscape is changing rapidly and so are the workflows used to build and improve LLM apps. Today, we are open sourcing all Product Features in Langfuse to enable our community to iterate on their applications faster and provide our project with feedback on where to go next. Newly open sourced features include managed LLM-as-a-judge evaluations, annotation queues, prompt experiments and the playground, all of which are now freely available to self-host under the MIT license. If you are self-hosting Langfuse already today, upgrade your deployment to the latest version. You will find a more powerful version of Langfuse. Why are we doing this? Langfuse is building the open source LLM Engineering Platform. We are building the platform to observe and improve LLM applications. We are constantly shipping to be the technology of cho ... Read full article.