# Microsoft Copilot and Bing change log

> What changed in Microsoft Copilot and Bing, by date: every Paralax brief about it, each linking its source where one exists.

- Canonical: https://paralax.ai/engines/copilot
- Latest brief: 2026-06-18
- Change log index: https://paralax.ai/engines

## Dated briefs

### 2026-06-18 — [Bing Just Made Citation Share a Reported Metric — AI Visibility Gets Its First Native Yardstick](https://paralax.ai/blog/bing-webmaster-citation-share-ai-visibility-metric-2026)

Bing Webmaster Tools now reports Citation Share, Intents, Topics, and Compare. The AI-visibility yardstick just moved from binary to market share.

- Primary source: [blogs.bing.com](https://blogs.bing.com/webmaster/February-2026/Introducing-AI-Performance-in-Bing-Webmaster-Tools-Public-Preview)
- Markdown: https://paralax.ai/blog/bing-webmaster-citation-share-ai-visibility-metric-2026.md

### 2026-06-12 — [Microsoft Web IQ: The Day Search Stopped Being Built for People](https://paralax.ai/blog/microsoft-web-iq-agent-grounding-search-machines)

Microsoft Web IQ is a search engine for AI agents, not humans. Passage-level retrieval just made the webpage the wrong unit of discovery.

- Primary source: [microsoft.com](https://www.microsoft.com/en-us/webiq)
- Markdown: https://paralax.ai/blog/microsoft-web-iq-agent-grounding-search-machines.md

## Official changes

From the engine's own change feeds, each with its primary source.

### 2026-02-11 — Introducing AI Performance in Bing Webmaster Tools Public Preview

- Primary source: [blogs.bing.com](https://blogs.bing.com/webmaster/2026/2/Introducing-AI-Performance-in-Bing-Webmaster-Tools-Public-Preview/)

### 2025-10-15 — Bing Introduces Support for the data-nosnippet HTML Attribute

- Primary source: [blogs.bing.com](https://blogs.bing.com/webmaster/2025/10/Bing-Introduces-Support-for-the-data-nosnippet-HTML-Attribute/)