JetBrains Junie AI Coding Agent Exits Beta, Tops SWE-Rebench Benchmark

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JetBrains has officially launched Junie, its AI coding agent, into general availability after an extended beta period. Junie ranked first on the SWE-Rebench independent coding benchmark, resolving 61.6% of tasks and achieving a 72.7% pass@5 score. Unlike many AI assistants that generate code without context, Junie integrates directly with IDE toolchains, using the same debugger and project tools developers rely on daily. A key new feature called Plan mode requires Junie to produce a structured planning document — covering requirements, design, and delivery stages — before writing any code, reducing wasted effort. Junie supports multiple AI models without vendor lock-in, allowing developers to balance cost and performance by choosing between powerful frontier models or cheaper local alternatives.

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