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<https://blog.jetbrains.com/ai/2025/08/koog-0-4-0-is-out-observable-predictable-and-deployable-anywhere-you-build/|Koog 0.4.0 Is Out: Observable, Predictable, and Deployable Anywhere You Build>
Featuring Langfuse and W&amp;B Weave Support, Ktor Integration, Native Structured Output, GPT-5, and More. Koog 0.3.0 was about making agents smarter and persistent. Koog 0.4.0 is about making them observable, seamlessly deployable in your stack, and more predictable in their outputs – all while introducing support for new models and platforms. Read on to discover […]