JetBrains/koog
A Kotlin multiplatform framework for building fault-tolerant AI agents with LLM support across JVM, Android, iOS, and web platforms.

Koog is a JetBrains-backed framework for creating AI agents in idiomatic Kotlin and Java. It provides multi-platform deployment options spanning JVM, JS, WasmJS, Android, and iOS. The framework emphasizes reliability and fault-tolerance for enterprise deployments, with built-in support for major LLM providers including OpenAI, Anthropic, and Ollama, as well as MCP protocol integration for tool-based interactions and multi-agent orchestration.
Frequently asked
- What is JetBrains/koog?
- A Kotlin multiplatform framework for building fault-tolerant AI agents with LLM support across JVM, Android, iOS, and web platforms.
- Is koog open source?
- Yes — JetBrains/koog is open source, released under the Apache-2.0 license.
- What language is koog written in?
- JetBrains/koog is primarily written in Kotlin.
- How popular is koog?
- JetBrains/koog has 4.5k stars on GitHub.
- Where can I find koog?
- JetBrains/koog is on GitHub at https://github.com/JetBrains/koog.