# Sphere

Startup profile on Capital Atlas: https://capitalatlas.ai/startups/sphere

- Industry: Software
- Headquarters: San Francisco, US
- Website: www.getsphere.com
- Total disclosed funding: $25M
- Latest round: Series A (Nov 18, 2025)
- Investors on record: 6

## About

Based in California, US, and founded in 2020 by Nicholas Rudder, and Adrian Sarstedt, Sphere, Inc., formerly known as ScholarSite operates as an educational content provider for professionals to give training and enable the continuous building of skills.

The business offers education services with a particular emphasis on data science and machine learning techniques used in software engineering. The curriculum is being created by each instructor individually at Sphere. Sphere has achieved completion rates of over 80%, compared to an average of 4% for asynchronous classes, by giving live instruction rather than video or other formats. The business has been approved as a supplier for 700 different tech businesses to have their workers' course tuition reimbursed as a learning and development expense. 

The firm generates revenue by charging for its services including USD 1000 roughly for the course per student. 

In November 2025, Sphere, Inc. raised USD 21 million in series A funding led by Andreessen Horowitz, with participation from 20VC, Felicis Ventures, Pioneer Fund and Y Combinator. The company plans to utilize the November 2025 funding to expand Tax Review and Assessment Model capabilities beyond indirect tax into input tax, withholding tax, electronic invoicing, and tariffs for development of a full revenue-based compliance engine.

## Funding rounds

- Series A, Nov 18, 2025, $21M — Andreessen Horowitz, Felicis Ventures, Y Combinator, Pioneer Fund, 20VC
- Seed, Aug 15, 2022, $4.3M — Felicis Ventures, Y Combinator, Uncommon Capital
- Seed, Jan 1, 2022 — Pioneer Fund

## Investors

- Pioneer Fund (https://capitalatlas.ai/funds/pioneer-fund) — Seed, Series A
- Felicis Ventures (https://capitalatlas.ai/funds/felicis-ventures) — Seed, Series A
- Y Combinator (https://capitalatlas.ai/funds/y-combinator) — Seed, Series A
- Uncommon Capital (https://capitalatlas.ai/funds/uncommon-capital) — Seed
- Andreessen Horowitz (https://capitalatlas.ai/funds/andreessen-horowitz) — Series A
- 20VC (https://capitalatlas.ai/funds/20vc) — Series A