Mainframe
Mainframe wants to redefine human-computer interaction with a future operating system where agents are the new apps.
$5.5M Seed ·
Led by Lachy Groom · Source: x.com
Funding history ↓Signals
Website registeredSep 26, 2012 (14 years old)
About Mainframe
Founded by Jordan Singer, who sold his last startup Diagram to Figma.
Funding rounds
| Date | Round | Amount | Lead | Source |
|---|---|---|---|---|
| Seed | $5.5M | x.com |
Timeline
- Website created
Investors
Companies like Mainframe
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Other companies backed by Lachy Groom
IImprint$400M Series B+ · Nov 2026
PPeak Energy$108M Series B+ · Oct 2026
TTolan$30M Series A · Oct 2026MMeticulous$15M Series A · Oct 2026
VVolantis$88M Series A · Oct 2026Aalteon energy$2.5M Pre Seed · Sep 2026
Sources and API
Every amount links to the page it came from. * Estimated from an accelerator's published standard deal, not a company-specific disclosure. How Recent Funding sources and verifies funding data. The same data as JSON: /api/v1/companies/mainframe (get a free API key).