Fern
YC W26Founded 2025 · 2 employees · 4 known investors
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Fern develops high-fidelity, custom robot world models for scaling the evaluation and training of robot policies. The product serves robotics teams building and deploying autonomous systems.
Also known as Ishiki Labs Inc. · Fern (Formerly Ishiki Labs) · Ishiki Labs · ProactiveAI · ProactiveAI, Ishiki Labs, Fern (Formerly Ishiki Labs)
Founders & leadership· Y Combinator alumni (W26)
Fern was founded in 2025 by Amit Yadav and Robert Xu.


Investors · 4
How we know: the Y Combinator directory · funding news · press coverage · Not right? Tell us
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How we know: funding news · Not right? Tell us
Founder mafia
2 people who came through Fern went on to found or lead other companies.
Related companies · 8
Companies working in the same space as Fern.
Legal entities · 1
corporate structureIn the news
Frequently asked questions
- What does Fern do?
- Fern develops high-fidelity, custom robot world models for scaling the evaluation and training of robot policies. The product serves robotics teams building and deploying autonomous systems.
- Who founded Fern?
- Fern was founded by Amit Yadav, Robert Xu in 2025.
- Who are Fern's investors?
- Fern's investors include Y Combinator, Capitalize VC, OUTBOUND CAPITAL, V1 VC.










