# Yandex founding date

entity: /record/yandex.md  
predicate: founded  
page: /record/yandex/founded  
as_of: 2026-11-01  

As of November 1, 2026, Yandex's founding date on the AsOf record is September 23, 1997, dated September 23, 1997, from 2 secondary sources (baike.baidu.com and habr.com). The record holds 1 claim on Yandex's founding date, 1 still open and 0 superseded, each dated and sourced; a replaced value is closed with an end date, never deleted.

## Current founding date

What the record asserts on 2026-11-01.

- [Yandex](/record/yandex.md) | founded | 1997-09-23 | valid 1997-09-23 to present | conf 0.80 | valid | [clm_A68619CF1BB2](/claim/clm_A68619CF1BB2.md)
  sources: https://baike.baidu.com/en/item/%D0%AF%D0%BD%D0%B4%D0%B5%D0%BA%D1%81/1521849, https://habr.com/ru/companies/yandex/articles/152018/, https://www.wikidata.org/wiki/Q5281

## Every dated value

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 Superseded claims stay visible.

- [Yandex](/record/yandex.md) | founded | 1997-09-23 | valid 1997-09-23 to present | conf 0.80 | valid | [clm_A68619CF1BB2](/claim/clm_A68619CF1BB2.md)
  sources: https://baike.baidu.com/en/item/%D0%AF%D0%BD%D0%B4%D0%B5%D0%BA%D1%81/1521849, https://habr.com/ru/companies/yandex/articles/152018/, https://www.wikidata.org/wiki/Q5281

## Questions this record answers

### What is Yandex's current founding date?

September 23, 1997, dated September 23, 1997, from 2 secondary sources (baike.baidu.com and habr.com). The record asserts this claim as of November 1, 2026 (status valid, confidence 0.80).


## Get this data

- JSON: /v1/entities/yandex/founded (this fact) · /v1/entities/yandex?predicates=founded (with the entity's coverage; add as_of=YYYY-MM-DD for a date)
- MCP: timeline(entity: "yandex", predicates: ["founded"]) for every dated value · fetch(id: "/record/yandex/founded.md") for this page
- Entity twin: /record/yandex.md · timeline: /timelines/yandex.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.