# Featherless AI

> Featherless AI is a serverless inference platform that gives developers and enterprises a single API key to run more than 40,000 open-weight AI models across language, vision, audio and multimodal tasks - without provisioning or managing any GPUs. Founded in 2023 by the team behind the RWKV open-source model architecture, the company sells flat-rate subscriptions with unlimited tokens and positions itself as a neutral infrastructure layer for open-source AI, independent of the major cloud hyperscalers. It raised a $20M Series A in April 2026 co-led by AMD Ventures and Airbus Ventures, bringing total funding to about $25M.

- **Founded:** 2023
- **Headquarters:** San Francisco, California, United States
- **Founders:** Eugene Cheah (Co-founder & CEO), Harrison Vanderbyl (Co-founder & CTO), Wesley George (Co-founder & COO)
- **Team size:** About 29 employees
- **Products:** Serverless Inference API, Flat-Rate Subscription Plans, AI Optimization Stack, Open-Source Agent Runtime
- **Notable:** Grew a catalog to more than 40,000 open-weight models accessible through one API key, Raised roughly $25M total, including a $20M Series A co-led by AMD Ventures and Airbus Ventures, Cut model-switching time to under 5 seconds versus a roughly 30-minute industry norm

## Products & services

- **Serverless Inference API** — A single API key that provides instant, on-demand access to more than 40,000 open-weight models across language, vision, audio and multimodal use cases, with GPU allocation, scaling and routing handled automatically.
- **Flat-Rate Subscription Plans** — Subscription tiers ($10 Basic, $25 Premium, $75+ Scale) offering unlimited tokens and a fixed number of concurrent requests, replacing per-token metered billing.
- **AI Optimization Stack** — A combined inference, model and workflow optimization system, including hot-swap technology that switches between models in under 5 seconds versus a roughly 30-minute industry standard.
- **Open-Source Agent Runtime** — An open agent runtime for building and running AI applications on top of the Featherless model library.

## Achievements

- Grew a catalog to more than 40,000 open-weight models accessible through one API key
- Raised roughly $25M total, including a $20M Series A co-led by AMD Ventures and Airbus Ventures
- Cut model-switching time to under 5 seconds versus a roughly 30-minute industry norm
- Described as the fastest-growing inference partner on Hugging Face
- Founding team created RWKV, a widely used open-source alternative to the transformer architecture

## Latest updates

- **2026-04** — Raised $20M Series A co-led by AMD Ventures and Airbus Ventures, with BMW i Ventures, Kickstart Ventures, Panache Ventures and Wavemaker Ventures participating.
- **2026-04** — Expanded model catalog past 40,000 open models and outlined plans for a marketplace of fine-tuned models and deeper AMD hardware integration.
- **2025-03** — Raised $5M seed round to democratize access to open-source AI models.

## Links

- Website: https://featherless.ai
- LinkedIn: https://www.linkedin.com/company/feather-serverless-ai

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Profile page: https://yespress.io/featherless-ai
Published by YesPress — https://yespress.io
Last updated: 2026-07-12