How many tasks are in the Kotlin Benchmark, and where do they come from?
The first public iteration contains 105 engineering tasks sourced from active open-source Kotlin repositories. Each task requires an agent to read a real issue description, navigate the existing codebase, and produce a patch verified inside a containerized environment — resolved only if the generated solution passes the required tests.
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JetBrains Built Its Own AI Coding Benchmark Because It Doesn't Trust Anyone Else'sJetBrains released a 105-task, open Kotlin coding benchmark on July 8, 2026 — and Claude Code beat JetBrains' own Junie agent by 3.81 points at launch.
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