EquityFlowCompanies › Sponge

Sponge Y Combinator · Winter 2026

Fintech · San Francisco, US · paysponge.com

Financial infrastructure for the AI agent economy.

Financial infrastructure for the agent economy

Funding history

DateRoundAmount
Dec 2025Pre Seed
Sponge (YC W26) raised a $1.8M pre-seed round in December 2025 to build financial infrastructure for AI agents.
$1.8M

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