Rider 2026.2.1 and ReSharper 2026.2.1 Are Here! - The JetBrains Blog

JetBrains has released Rider 2026.2.1 and ReSharper 2026.2.1, the first minor update in the 2026.2 cycle, with an emphasis on AI-assisted development, performance, and tooling improvements. Rider adds bundled AI agent skills for code refactoring, debugging across .NET, Unity, Unreal Engine, and mixed-language projects, and analyzing dotTrace snapshots from Unity profiling; JetBrains reports that access to Rider’s refactoring engine reduced median task time by 83%, cost by 64%, and tool calls by 63% across tested C# refactoring tasks. Rider quality-check hooks now support Codex alongside Claude Code, while Unreal Engine code-authoring and test-authoring skills have been updated and may require manual reinstallation. ReSharper now uses Out-of-Process mode by default, enabled by dotCover’s OOP support, and its type and project dependency diagrams are also available in that mode. The update additionally introduces a newer Junie version with support for Claude Opus 5.

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