Poseidon
Long-Tail Training Data for AI
Palo Alto, United States · Founded 2025
- Headquarters
- Palo Alto, California
- Employees
- 1–10
- Founded
- 2025
- Business Model
- B2B
- Website
- psdn.ai
- Last Round
- SeedJul 2025
- Rounds
- 1
About
Poseidon is a full-stack data infrastructure layer designed to solve AI's long-tail data bottleneck by bridging supply and demand for high-quality, rights-cleared training data. Incubated by Story Protocol, Poseidon enables crowdsourced collection of differentiated long-tail data and edge cases, curation and cleaning with quality flagging, and AI-assisted human annotation for fine-grained labels. The platform allows data contributors to earn rewards while giving AI developers access to licensed datasets with clear provenance. Poseidon currently hosts over 2.5 million audio files across 8+ languages representing 16,500+ hours of audio data.
Summary
Poseidon is a Crypto & Web3 company based in Palo Alto, United States, founded in 2025. Its most recent funding was a Seed round in Jul 2025.
Tech & App Stack
3 technologies & apps tracked
Create a free account — 10 credits a month to unlock the full tech & app stack, funding history, and valuations.
Sign up to view the funding chart
Create a free account — you'll get 10 credits a month to unlock funding history, valuations, and tech stacks.
Funding History
Jul 2025
Similar Companies
Databricks is the pioneer of the data lakehouse, a unified platform for data science, machine lea...
AI research and product company building customizable, multimodal AI systems.
Precisely is the global leader in data integrity, providing accuracy, consistency, and context in...
Palantir Technologies builds data integration and analytics platforms (Gotham and Foundry) for go...
Humanoid robotics company building general-purpose autonomous robots for commercial deployment
Data platform for the age of deep learning