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kotlinlang

<https://blog.jetbrains.com/research/2026/07/kotlinllm-open-source/|KotlinLLM is Going Open Source >
TL;DR KotlinLLM is now public. It’s a research prototype for delegating runtime logic to an LLM from Kotlin code. Instead of calling an LLM on every request or running a separate agent, you can write an explicit Kotlin call. Its body is generated Kotlin source code, and that code is updated as your application hits […]

I have a hard time understanding it. It is runtime but not runtime? I could not figure out what problem it solves

My read of the repo:
dev-time = LLM writes/extends parsers in `generated/` from real runtime inputs (via Run with KotlinLLM + JDI breakpoints)
prod = plain Kotlin parsers, no LLM on the hot path. `asLlm` is for messy repeated text → typed models, not a general runtime LLM API. If you already have a stable schema, normal serializers/codegen are the better tool.

This is amazing - I have an immediate use case for it! :kodee-excited: