{"slug": "rider-2026-2-1-and-resharper-2026-2-1-are-here", "title": "Rider 2026.2.1 and ReSharper 2026.2.1 Are Here!", "summary": "JetBrains released Rider 2026.2.1 and ReSharper 2026.2.1, the first minor updates for the 2026.2 release cycle. Rider 2026.2.1 bundles a refactoring-code skill that makes AI agents 83% faster, 64% cheaper, and 63% fewer tool calls per task across fifteen C# refactoring tasks, and adds a debugging-code skill for C#, F#, C++, and mixed-language projects. ReSharper 2026.2.1 now runs in Out-of-Process mode by default and updates Junie to support Claude Opus 5.", "body_md": "## .NET Tools\n\nEssential productivity kit for .NET and game developers\n\n[.NET Tools](/dotnet/category/net-tools/)\n\n[Release](/dotnet/category/release/)\n\n[Releases](/dotnet/category/releases/)\n\n[Rider](/dotnet/category/rider/)\n\n# Rider 2026.2.1 and ReSharper 2026.2.1 Are Here!\n\nOur first minor update for the 2026.2 release cycle is ready to download. Here’s what’s new.\n\n**Rider**\n\nRider 2026.2 put AI-assisted development front and center, and v2026.2.1 keeps that momentum going:\n\n- The bundled\n`refactoring-code`\n\nskill helps AI agents refactor code faster and at lower cost.[Get the full story](https://blog.jetbrains.com/dotnet/2026/08/17/rider-refactoring-code-skill/).\n\nThe refactoring-code skill, bundled in JetBrains Rider\n\nMedian task time\n\n83% faster\n\nCost per solved task\n\n64% cheaper\n\nTool calls per task\n\n63% fewer\n\nMedians across fifteen C# refactoring tasks, each run roughly ten times with the same model and the same prompts. The only difference between the two arms was whether the agent could call Rider’s refactoring engine.\n\n- The bundled\n`debugging-code`\n\nskill lets AI agents investigate runtime issues in C#, F#, C++, and mixed-language projects, whether they’re built with .NET, Unity, or Unreal Engine. Agents can set breakpoints, step through code, inspect values and thread context, follow the call order, and check which branches are taken or whether execution reaches a specific line. - Rider’s quality-check hooks now support Codex in addition to Claude Code.\n- The bundled\n`dottrace-analyze`\n\nskill can now analyze snapshots captured while profiling*Unity*projects.\n\n**Note for Unreal Engine developers:** The recommended skills for UE C++ – `ue-code-authoring`\n\nand `ue-test-authoring`\n\n– have been updated, but update notifications for them aren’t being displayed yet. If you already have the skills installed, please uninstall them and reinstall their latest versions by going to *Settings | Tools | AI Assistant | Skills*.\n\nFor the full overview, visit the[ What’s New in Rider](https://www.jetbrains.com/rider/whatsnew/) page. You can also find the full list of fixes included in this build in [our issue tracker](https://youtrack.jetbrains.com/issues/RIDER?q=%23Resolved%20Available%20in:%202026.2.1).\n\n**ReSharper**\n\nThe big news 🎉: Starting with 2026.2.1, ReSharper now runs in *Out-of-Process* (OOP) mode by default unless you’ve turned it off. This is possible because dotCover now supports *OOP* mode.\n\nDiagramming has improved as well. You can now explore type dependency and project dependency diagrams in *OOP* mode, so there’s no need to switch back to *In-Process* mode.\n\nLast but not least, we’ve updated Junie to a new version that adds support for Claude Opus 5, so you can now pick it as the model powering your sessions.\n\nFor more information, visit the[ What’s New in ReSharper](https://www.jetbrains.com/resharper/whatsnew/) page. The full list of fixes included in this build is available in [our issue tracker](https://youtrack.jetbrains.com/issues?q=Project:%20RSRP,%20RSCPP,%20dotTrace,%20dotMemory,%20dotCover,%20dotPeek,%20Profiler,%20DPA%20Available%20in:%202026.2.1*%20).\n\nThat’s all for this update. Try out the new features and let us know what you think in the comments below or in our issue trackers ([Rider](https://youtrack.jetbrains.com/issues/RIDER),[ ReSharper](https://youtrack.jetbrains.com/issues/RSRP)).\n\n#### Subscribe to a monthly digest curated from the .NET Tools blog:", "url": "https://wpnews.pro/news/rider-2026-2-1-and-resharper-2026-2-1-are-here", "canonical_source": "https://blog.jetbrains.com/dotnet/2026/08/19/rider-resharper-2026-2-1/", "published_at": "2026-08-19 15:36:45+00:00", "updated_at": "2026-08-19 16:11:19.447059+00:00", "lang": "en", "topics": ["developer-tools", "artificial-intelligence", "ai-agents"], "entities": ["JetBrains", "Rider 2026.2.1", "ReSharper 2026.2.1", "Claude Opus 5", "Junie", "Codex", "Claude Code"], "alternates": {"html": "https://wpnews.pro/news/rider-2026-2-1-and-resharper-2026-2-1-are-here", "markdown": "https://wpnews.pro/news/rider-2026-2-1-and-resharper-2026-2-1-are-here.md", "text": "https://wpnews.pro/news/rider-2026-2-1-and-resharper-2026-2-1-are-here.txt", "jsonld": "https://wpnews.pro/news/rider-2026-2-1-and-resharper-2026-2-1-are-here.jsonld"}}