What it does This is the official VS Code client for Tabnine, an AI coding assistant that provides inline completions, chat-based Q&A, test generation, documentation, and code explanation. It wraps the Tabnine service in a standard VS Code extension, hooking into the editor’s completion and chat APIs.

The interesting bit The extension’s real differentiator is deployment flexibility: the same client can point to Tabnine’s SaaS backend, a self-hosted on-prem instance, or a VPC. The README also notes you can now switch between multiple LLMs in real time—including Tabnine’s own private models and third-party options like Claude 3.5 Sonnet, GPT-4o, and Codestral—without reinstalling anything.

Key highlights

• Supports ~30 languages from ABAP to Swift, plus React/Vue and Terraform
• Chat features cover the full lifecycle: plan, create, test, fix, document, explain, maintain
• Enterprise customers can train a bespoke model on their own codebase
• Claims no data storage, no third-party sharing, and no training on user code
• Self-hosted updater available as a separate marketplace extension

Caveats

• The “1,000,000+ developers” trust claim is unverified in the sources
• Most advanced features (custom models, self-hosting) appear to require paid enterprise plans; the free tier limits are unspecified

Verdict Worth evaluating if your team needs Copilot-like completions but has strict data residency requirements. Skip if you’re satisfied with GitHub Copilot and don’t need on-prem or model-switching options.