F4 Industries
Last verified 2026-09-25. JSON
The funding figures on this page are attributed, not sourced: a publisher is on record but no document URL is. How we mark provenance.
| Total raised | $1.0Mattributed |
|---|---|
| Latest round | seed, $1.0M, 2025-06-01attributed |
| Founded | 2025 |
| Headquarters | San Francisco, USA |
| Industry | ai |
| Stage | seed |
| Website | f4.dev |
GD&T analysis platform for mechanical engineering drawings — no AI, deterministic checks for clarity and manufacturability. Built for design engineers, manufacturers, and inspectors. Team includes engineers from SpaceX, Tesla, General Atomics, Aerojet Rocketdyne, and NASA.
Funding rounds
| Date | Round | Amount | Lead |
|---|---|---|---|
| 2025-06-01 | seed | $1.0M | undisclosed |
Detected tech stack
YouTube, React Router 7.13.1, Google Cloud CDN, Google Cloud Load Balancing, Google Cloud Trace, React, Google Cloud, Remix
Provenance
| Fact | Status | Basis |
|---|---|---|
| Seed, $1.0M | attributed | yc named as publisher. No document URL on file. |
| Total raised $1.0M | attributed | yc named as publisher. No document URL on file. |
| Company existence | sourced | Y Combinator named as publisher. Document, retrieved 2026-09-17. |
| Description | self-reported | f4.dev, read 2026-09-25 |
Change history
| Date | Fact | Change | Basis |
|---|---|---|---|
| 2026-09-24Existence: self-reported → sourced, Y Combinator, document, retrieved 2026-09-17 | Existence | self-reported → sourced | Y Combinator, document, retrieved 2026-09-17 |
Records begin 2026-09-24. All changes