IntelliCode review 2026: how Microsoft's free AI-assisted IntelliSense extension for VS Code worked, its 2025 deprecation, and the best alternatives now.
Microsoft announced Visual Studio IntelliCode in 2017 as an AI-assisted upgrade to IntelliSense, using machine learning trained on high-quality open-source GitHub repositories combined with pattern detection in a developer's own code to rank and predict likely completions. It shipped as a built-in feature of Visual Studio and as a free, separately installed extension for Visual Studio Code.
IntelliCode's core value proposition was that its inference ran locally on the developer's machine rather than in the cloud, meaning private source code never left the device for the completion feature to work -- a meaningfully different privacy model from later cloud-based AI coding assistants.
As of November 2025, Microsoft formally deprecated the VS Code IntelliCode extension family, archiving its GitHub repository and shifting its AI developer tooling strategy entirely to GitHub Copilot; as a result, IntelliCode is now a discontinued, legacy tool rather than an actively developed product.
IntelliCode's signature feature was reordering, not replacing, the standard IntelliSense completion list: statistically likely suggestions were moved to the top and marked with a star icon, based on patterns learned from high-quality public repositories and the developer's own recent code.
For higher-confidence predictions, IntelliCode displayed a grey inline preview of an entire predicted line, which developers could accept by pressing Tab, functioning similarly to (but predating) the ghost-text completions later popularized by GitHub Copilot and other LLM-based tools.
The extension also provided API usage examples sourced from over 100,000 public APIs on GitHub, showing developers real-world usage patterns for unfamiliar libraries, and supported Python, JavaScript, TypeScript (including JSX/TSX), with Java and C# support delivered through separate companion extensions.
IntelliCode was always completely free, with unlimited usage and no subscription tiers, funded as part of Microsoft's broader Visual Studio and developer tools ecosystem rather than sold as a standalone product.
Since its November 2025 deprecation, IntelliCode has no pricing to evaluate going forward because Microsoft no longer maintains or actively distributes it as a supported product; Microsoft directs users toward GitHub Copilot instead, which uses a freemium model with roughly 2,000 free completions per month before requiring a paid plan starting at 10 dollars per month for individuals.
No. Microsoft formally deprecated the VS Code IntelliCode extension suite in November 2025 and now directs developers to GitHub Copilot for AI-assisted coding instead.
Yes. IntelliCode was always completely free with unlimited usage and no subscription tiers, unlike its subscription-based successor GitHub Copilot.
IntelliCode ran small machine-learning models locally to rank and predict completions without sending code to the cloud, while GitHub Copilot uses large cloud-hosted language models and requires an internet connection and, beyond a limited free tier, a paid subscription.
Microsoft announced Visual Studio IntelliCode in 2017 as an AI-assisted enhancement to IntelliSense for Visual Studio and, shortly after, Visual Studio Code.
IntelliCode natively supported Python, JavaScript, and TypeScript in VS Code, with Java and C# supported through separate companion extensions.
Microsoft recommends GitHub Copilot as the direct successor; other alternatives include Tabnine and other AI coding assistants that offer local or hybrid inference options.