Poseidon

AI Infrastructure · Data · Crypto/Web3

Funding

Poseidon raises $15M seed led by a16z's Chris Dixon for AI data coordination

The startup wants to build a marketplace-like layer that matches AI labs' hunger for training data with the people who actually hold it.

• Poseidon raised a $15 million seed round led by Andreessen Horowitz general partner Chris Dixon, according to Dixon's own announcement.
• Poseidon is building a decentralized data layer meant to coordinate supply and demand for AI training data.
• Dixon shared the investment publicly on X, where the announcement drew hundreds of likes and dozens of retweets within hours.
• As frontier labs exhaust public web data, startups that can efficiently source and price fresh training data are becoming a strategic chokepoint in the AI supply chain.