Do Accel and Y Combinator invest together?

Yes — Accel and Y Combinator appear together in 19 tracked portfolio companies, including Airbyte, Algolia, AssemblyAI, Atlas, Atrato.

How do Accel and Y Combinator compare on check size?

Accel typically writes checks of $1.6M – $70M, while Y Combinator writes $500K.

Two firms that co-invest: side by side on stage, sector, check size, and track record, from public filings and the firms' own sites.

	Accel	Y Combinator
Type	Venture capital	Accelerator
HQ	Palo Alto	San Francisco
Founded	1983	2005
Check size	$1.6M – $70M	$500K
Stages	Seed, Series A, Series B, Series C, Growth, Late Stage	Pre-Seed, Seed, Series A
Sectors	AI & Machine Learning, Cloud Computing, Consumer, Cybersecurity, Data & Infrastructure, Defense Tech, Developer Tools, Enterprise Software, Fintech, Marketplaces, Media & Entertainment, SaaS, Sector Agnostic	AI & Machine Learning, Biotech, Climate Tech, Deep Tech, EdTech, Robotics, SaaS, Sector Agnostic, Space Tech
AUM	$38B	—
Tracked investments	245	6,130
Exits (acquired/public)	7	839
Led rounds on record	23	21
Dated deals, last 24 mo	15	1304

Do Accel and Y Combinator invest together?: Yes — Accel and Y Combinator appear together in 19 tracked portfolio companies, including Airbyte, Algolia, AssemblyAI, Atlas, Atrato.
How do Accel and Y Combinator compare on check size?: Accel typically writes checks of $1.6M – $70M, while Y Combinator writes $500K.