Scale — Cosign

Scale builds reliable AI for consequential decisions, combining expert training data, model evaluations and deployed applications for frontier labs, enterprises and governments.

Products & media

Scale Data Engine

A data development platform providing human expertise, labeling, and evaluation workflows to train and improve AI models.

Scale Donovan

An AI platform for government and defense organizations to analyze information and support workflows in secure environments.

Scale GenAI Portfolio

An enterprise AI platform for connecting organizational data, developing agents, evaluating performance, and incorporating expert feedback.

Team

23 people across company lists

Founders

2 people

List

Alexandr Wang2016

Lucy Guo2016

Previous Affiliates

16 people

List

Leigh Marie Braswell2017

Current Affiliates

5 people

List

Annabel Strauss2025-05

Marina Miller2026-01

Francis deSouza2026-08

Daniel Berrios

Jacob Phillips

Jobs

See all jobs for Scale here.

Head of Strategic Partnerships, Global Systems IntegratorsEnterprise SalesSan Francisco, CAUSD 134,400–168,000 (Please reference the job posting's subtitle for where this position will be located. For pay transparency purposes, the base salary range for this full-time position in the locations of San Francisco, New York, Seattle is:)View Job

Systems Engineering Integration & Test Lead, Public SectorPublic SectorWashington, DCUSD 166,400–249,000 (The base salary range for this full-time position in the location of Washington DC is:)View Job

Head of Strategic Partnerships, LabsEnterprise SalesSan Francisco, CAUSD 134,400–168,000 (Please reference the job posting's subtitle for where this position will be located. For pay transparency purposes, the base salary range for this full-time position in the locations of San Francisco, New York, Seattle is:)View Job

Field Marketing & Events Manager, Frontier DataMarketingSan Francisco, CA; New York, NYUSD 128,000–160,000 (Please reference the job posting's subtitle for where this position will be located. For pay transparency purposes, the base salary range for this full-time position in the locations of San Francisco, New York, Seattle is:)View Job

Engagement Manager, Public Sector (Miami, FL)Public SectorMiami, FLUSD 138,400–208,000 (The base salary range for this full-time position in the location of Miami, FL is:)View Job

All 179 jobs

Funding

All fundraising announcements are based on public sources. Please contact Cosign if you believe there are any discrepancies, or claim the profile to edit.

Leads

Participating Firms

Angels

Jun 2025Series G

$14.3B$29B valuation

Led by Meta

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May 2024Series F

$1B$13.8B valuation

Led by Accel

With Y Combinator Index Ventures Founders Fund Coatue Management Thrive Capital Spark Capital NVIDIA Greenoaks Wellington Management Cisco Investments

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Apr 2021Series E

$325M$7.3B valuation

Led by Greenoaks

With Wellington Management Durable Capital Partners Coatue Management Index Ventures Founders Fund Y Combinator

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Dec 2020Series D

$155M$3.5B post-money valuation

Backed by Accel Coatue Management Index Ventures Spark Capital Founders Fund Thrive Capital

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Aug 2019Series C

$100M$1B valuation

Led by Founders Fund

With Accel Coatue Management Index Ventures Spark Capital Thrive Capital

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Aug 2018Series B

$18M$1B post-money valuation

Led by Index Ventures

With Accel Y Combinator

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May 2017Series A

$4.5M

Led by Accel

With Y Combinator

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Aug 2016Seed

$120K

Led by Y Combinator

Angels

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