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Fern

Fern

Fern builds high-fidelity, learned simulators that let robotics teams evaluate and train policies at scale without physical hardware.

Operating headquarters
San Francisco, CA, US🇺🇸
Founded
2025
Accelerator
Y Combinator logoY CombinatorW26
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Fern - Library

fern.bot·Crawled Sep 27, 2026·

Topics

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Homepage

1 page
  1. Homepage/

    Enabling physical AI at scale

Coverage

10 items
  1. Claude's Corner: Fern - From Sales AI to Robot World Modelsstartuphub.ai/ai-news/claudes-corner/2026/claudes-corner-fern-formerly-ishiki-labs-yc-w2026

    Fern shifts from a realtime meeting assistant for sales to creating custom world models for robots. StartupHub.ai describes its learned-simulation approach, which lets teams evaluate and train robot policies without physical hardware.

    Aug 2026 · StartupHub.aiNews article

  2. How Startups Are Building Models of the Worldaxomap.com/maps/world-model-startups/analysis

    Axomap surveys 22 startups building world models across physical, virtual, biological, and social systems. It places Fern’s learned robot world models in the physical-AI group.

    Jul 2026 · AxomapNews article

  3. Fern world model RL training lifts real-hardware task successlinkedin.com/posts/activity-7482773427364278272-1BuM

    Reports a customer reinforcement-learning result validated in Fern's world-model simulator: 30% more successful completions per robot-hour and a 7% absolute gain in task success measured on real hardware.

    Jul 2026 · Robert XuExternal social post

  4. Y Combinator's Winter 2026 batch is its most technically complex cohort yetcbinsights.com/research/y-combinator-winter-2026/

    CB Insights analyzes Y Combinator’s Winter 2026 batch, identifying it as the accelerator’s most technically complex cohort yet. Its review of all 199 companies centers on physical AI’s shortage of training data and names Fern among startups that let robotics teams run evaluations in high-fidelity simulation environments built from their own training data.

    Jun 2026 · CB InsightsNews article