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Investors / 1confirmation / Compare with Y Combinator

1confirmation vs Y Combinator

1confirmation lists 48 portfolio companies and has joined 6 funding rounds; Y Combinator lists 5,153 companies and has joined 3,388 rounds. 1confirmation comes in most often at Seed (80% of its entries), Y Combinator comes in most often at Seed (98% of its entries). 7 companies are on both portfolios, among them Coinbase, Karsa and Littio.

48Portfolio companies5,153
6Funding rounds joined3,388
2Rounds led2,960
1Rounds, last 12 months579
$5M to $20MTypical round it comes in atunder $1M
0%Sites no longer answering0%
Show as a table
1confirmation and Y Combinator, head to head
1confirmationY Combinator
Portfolio companies485,153
Funding rounds joined63,388
Rounds led22,960
Rounds, last 12 months1579
Typical round it comes in at$5M to $20Munder $1M
Sites no longer answering0%0%

Where they come in

share of entries by stage
Pre-seed0%0%
Seed80%98%
Series A20%1%
Series B0%0%
Growth0%1%

1confirmationY Combinator

Show as a table
Entry stages of 1confirmation and Y Combinator, share of entries
1confirmationY Combinator
Pre-seed0%0%
Seed80%98%
Series A20%1%
Series B0%0%
Growth0%1%

Themes

share of checked companies
Fintech44%13%
AI & Machine Learning9%26%
Healthcare & Biotech3%11%
Enterprise Software9%10%
Crypto & Web310%0%
Media & Entertainment8%3%

1confirmationY Combinator

Show as a table
Themes of 1confirmation and Y Combinator, share of checked companies
1confirmationY Combinator
Fintech44%13%
AI & Machine Learning9%26%
Healthcare & Biotech3%11%
Enterprise Software9%10%
Crypto & Web310%0%
Media & Entertainment8%3%

Companies both back

7

Shared companies are those both firms' own portfolio pages list, each checked against the company's site. The same comparison through the API is POST /v1/overlap, for up to 20 firms. How the data is graded

Free account · no card

Compare 1confirmation and Y Combinator as data

Pull both portfolios and every co-investor through one API key or MCP, and lay up to 20 firms side by side with POST /v1/overlap. A free account adds Ask AI searches and alerts when either firm adds a company.

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  • Ask AI5 plain-English investor searches a day
  • Full listsEvery portfolio row and two-firm overlap
  • API and MCP100 REST or MCP calls a month, one key
  • AlertsFollow 5 investors for portfolio and fund changes
VCinfo API
$ curl -H "X-API-Key: YOUR_KEY" \
  https://api.vcinfo.io/v1/firms/1confirmation.com/portfolio

# also
GET /v1/firms/ycombinator.com/portfolio
GET /v1/firms/1confirmation.com/coinvestors
The same data as an MCP server for Claude, Cursor and other AI tools. Set up MCP · Docs · Pricing