# VSCode Blogs

> Source: <https://code.visualstudio.com/blogs>
> Published: 2026-06-25 06:34:20+00:00

# From the VS Code blog

[
](/blogs/2026/06/19/what-50000-runs-taught-us)

Latest

## What 50,000 Runs of a 5-Line Eval Taught Us

How AI coding models calibrate effort, token cost, and tool use on even the simplest task, and what that means for model selection and cost.

Read post →## Recent posts

[
](/blogs/2026/06/18/byok-vscode)

### Use your own language model key in VS Code

Learn how to use bring your own key (BYOK) in VS Code to add models from providers like Azure, Anthropic, Gemini, OpenAI, Huggingface, OpenRouter, or use a local model with Ollama, Foundry Local, and more.

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](/blogs/2026/06/17/improving-token-efficiency-in-github-copilot)

### Improving token efficiency for GitHub Copilot in VS Code

Learn how we're improving token efficiency for GitHub Copilot to reduce costs and latency for VS Code users.

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](/blogs/2026/05/15/agent-harnesses-github-copilot-vscode)

### The Coding Harness Behind GitHub Copilot in VS Code

Learn why the coding harness around GitHub Copilot in VS Code matters as models, tools, agents, and providers evolve.