Microsoft · last updated 2026-05-21
Bing Copilot
Microsoft Copilot (formerly Bing Chat, now extending across Bing, Edge, and Windows) is grounded against Bing's search index and shares OpenAI's GPT-4-class models. Less consumer reach than Google AI Overviews but increasingly important as Microsoft pushes Copilot through Edge, Windows, and Microsoft 365 surfaces, and as enterprise buyers consolidate on Microsoft AI tooling.
Grounding model
Grounded against Bing's web index with the BingBot crawler. The grounding model is similar to Perplexity in some respects (always-on retrieval for most non-trivial queries), but the citation surface is closer to ChatGPT Search's inline footnote model.
Citation style
Inline numbered footnotes within the assembled answer, plus a horizontal source carousel at the top of the answer pane. Hover or tap-through opens the source. The citation density is high: more sources per answer than Gemini or Claude.
What it rewards
- Strong Bing indexing (Bing's index differs meaningfully from Google's, so optimization for Bing matters separately)
- Schema.org markup including FAQ, HowTo, and Article that Bing has supported for years
- Recent dates and dating discipline (Bing favors recent content for many queries)
- Clear semantic HTML and direct first-paragraph answers
What it penalizes
- Pages blocked from BingBot or relying entirely on JavaScript rendering that BingBot struggles with
- Thin content with no novel analysis or claims
- Sites without an XML sitemap submitted to Bing Webmaster Tools