Keystone

San Francisco, United States

Keystone is an AI-native testing platform that helps developers build, maintain, and run end-to-end tests at scale.

$500K raised

Sep 2025

Pre-Seed

Top Investors

Y CombinatorPioneer Fund

19,000+ verified contacts

Emails, phones & LinkedIn profiles

How much funding has Keystone raised?

Keystone has raised $500K in total funding. The most recent round was Pre-Seed. The last funding was announced in September 2025.

Who are Keystone's investors?

Keystone's investors include Y Combinator, Pioneer Fund.

Where is Keystone headquartered?

Keystone is headquartered in San Francisco, United States.

What does Keystone do?

Keystone is an AI-native testing platform that helps developers build, maintain, and run end-to-end tests at scale.

What stage is Keystone at?

Keystone is at the Pre-Seed stage.

Cite this page

Free to use in articles, research, and reference works. Stable URL — will not change. Data on this page last updated September 9, 2025.

MLA

"Keystone — Funding & Investors." VCBacked, September 9, 2025, https://www.vcbacked.co/company/keystone. Accessed June 4, 2026.

APA

VCBacked. (2025). Keystone — Funding & Investors. Retrieved June 4, 2026, from https://www.vcbacked.co/company/keystone

Wikipedia (cite web)

{{cite web |title=Keystone — Funding & Investors |url=https://www.vcbacked.co/company/keystone |website=VCBacked |access-date=June 4, 2026}}

Profile data sourced and verified per the VCBacked methodology. Last funding round dated September 9, 2025.