Prototyping Jobs

Baseten is an AI inference platform for deploying, optimizing, and scaling custom, open-source, and fine-tuned models in production.

Arena is a community-powered AI evaluation platform where people compare frontier-model outputs and vote, generating human-preference data and public leaderboards.

Abridge is an enterprise AI platform that turns clinician-patient conversations into clinical documentation, insights, and workflow outputs for healthcare systems.

Beijing-based AI company that develops large language models and AI-native products, including hosted model APIs and the Baixiaoying assistant.

California nonprofit that builds interactive AI-risk demonstrations and delivers briefings for public, civil-society, and government audiences.

Beijing-based enterprise AI company building foundation-model, agentic-AI, and AI-transformation products, including the TrueNorth enterprise decision hub.

Medium is a member-supported online publishing platform where people read, write, publish, and share stories and ideas.

D3 is building the internet’s domain layer as tokenized infrastructure, turning traditional and Web3 domains into productive digital assets.

AI safety and research company building reliable, interpretable, and steerable AI systems, including the Claude product family and developer platform.

Mysten Labs develops blockchain infrastructure and protocols including Sui network, Walrus storage, and Enoki platform for decentralized applications.