OpenAI Startup Fund | Activity | F4

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OpenAI Startup Fund Activity

Every public signal F4 has attached to this firm, with sources and cross-entity links.

Types

Time range

New Fund

OpenAI Startup Fund II filed a $400M Form D with the SEC on August 26, 2026. OpenAI is the sole LP in this new fund, a shift from the first fund which had Microsoft and other partners as LPs.

OpenAI Startup Fund

OpenAI Startup FundOpenAI Startup Fund

venturecapitaltracker.comAUG 26, 2026

AUG 26, 2026

Investment

OpenAI Startup Fund participated in Chai Discovery's Series C round (valued at $1.3B). Chai Discovery is a biotech AI startup developing open source AI for biological discovery.

Chai Discovery

Chai Discovery OpenAI Startup Fund

pitchbook.comJUL 14, 2026

JUL 14, 2026

Exit

Anysphere, maker of Cursor and a prior OpenAI Startup Fund seed investment, agreed to be acquired by SpaceX for $60B.

Anysphere

Anysphere OpenAI Startup Fund

axios.comJUN 16, 2026

techfundingnews.com

JUN 16, 2026

3 investments· DEC 2025 – MAY 2026Show all

Investment

OpenAI Startup Fund participated in Physical Intelligence's Series C round (valued at $5.6B). Physical Intelligence builds foundational AI software for robots.

Physical Intelligence

Physical Intelligence OpenAI Startup Fund

cbinsights.comMAY 31, 2026

MAY 31, 2026

Investment

Participated in Harvey's $200M Series E round at $11B valuation for legal AI agents.

Harvey

Harvey OpenAI Startup Fund

harvey.aiMAR 2026

MAR 2026

Investment

Led $3.5M seed round in HeyBoss, an AI website and business builder for SMBs.

HeyBoss

HeyBoss OpenAI Startup Fund

linkedin.comDEC 2025

DEC 2025