Code · Vendor site 2026-10-04
Koog is JetBrains’ open-source Kotlin and Java framework for building AI agents on the JVM with graph-based, functional, and planner strategies. It ships typed DSLs, built-in tools, MCP and A2A protocol support, tracing, and Kotlin Multiplatform targets beyond the server.
Understand the total cost
Free
Free
Framework documentation is open source under a permissive license with free local development and no hosted SaaS fee listed.
No retained pricing changes yet. A current price alone does not establish a historical trend.
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Yes. koog has an ongoing free plan. Framework documentation is open source under a permissive license with free local development and no hosted SaaS fee listed.
koog is listed as free. No paid plan with a published price was found.
API or developer access is mentioned. Docs cover MCP server and client implementations plus A2A integrations for agent interoperability.