# Microsoft founder

entity: /record/microsoft.md  
predicate: founder  
page: /record/microsoft/founder  
as_of: 2026-10-31  

As of October 31, 2026, Microsoft's founders on the AsOf record are Bill Gates and Paul Allen, each a claim of its own with its date, from 3 sources in all. The record holds 2 claims on Microsoft's founder, 2 still open and 0 superseded, each dated and sourced; a replaced value is closed with an end date, never deleted.

## Current founder

What the record asserts on 2026-10-31.

- [Microsoft](/record/microsoft.md) | founder | [Bill Gates](/record/bill-gates.md) | valid 1975-04-04 to present | conf 0.95 | valid | [clm_47E049801D65](/claim/clm_47E049801D65.md)
  sources: https://www.history.com/this-day-in-history/april-4/microsoft-founded, https://www.upi.com/Top_News/2026/04/04/On-This-Day-Gates-Allen-found-Microsoft/7291775266080/
- [Microsoft](/record/microsoft.md) | founder | Paul Allen | valid 1975-04-04 to present | conf 0.95 | valid | [clm_BC5154AA5154](/claim/clm_BC5154AA5154.md)
  sources: https://www.foxbusiness.com/technology/history-of-microsoft, https://www.history.com/this-day-in-history/april-4/microsoft-founded

## Every dated value

One claim per line, oldest first. Superseded claims stay visible.

- [Microsoft](/record/microsoft.md) | founder | [Bill Gates](/record/bill-gates.md) | valid 1975-04-04 to present | conf 0.95 | valid | [clm_47E049801D65](/claim/clm_47E049801D65.md)
  sources: https://www.history.com/this-day-in-history/april-4/microsoft-founded, https://www.upi.com/Top_News/2026/04/04/On-This-Day-Gates-Allen-found-Microsoft/7291775266080/
- [Microsoft](/record/microsoft.md) | founder | Paul Allen | valid 1975-04-04 to present | conf 0.95 | valid | [clm_BC5154AA5154](/claim/clm_BC5154AA5154.md)
  sources: https://www.foxbusiness.com/technology/history-of-microsoft, https://www.history.com/this-day-in-history/april-4/microsoft-founded

## Questions this record answers

### Who are Microsoft's founders?

Bill Gates (since April 4, 1975) and Paul Allen (since April 4, 1975), as the record asserts them on October 31, 2026.


## Get this data

- JSON: /v1/entities/microsoft/founder (this fact) · /v1/entities/microsoft?predicates=founder (with the entity's coverage; add as_of=YYYY-MM-DD for a date)
- MCP: entity_state(entity: "microsoft", predicates: ["founder"], scope: "all")
- Entity twin: /record/microsoft.md · timeline: /timelines/microsoft.md

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AsOf is a temporal fact ledger: a structured, dated, sourced record of what is true and what changed, built for AI retrieval.