What it sells
API for unlimited, durable, real-time streams
Business model breakdown
Buyer: who owns the budget?
UnverifiedBackend/infrastructure engineers building agent sessions, event pipelines, and real-time apps.
Workflow: what inputs become what output?
Create basins and streams via REST/SDK (TypeScript, Go, Rust, Python), append records durably on object storage, read/tail via SSE or HTTP/2 sessions.
Economics: what it saves and how it charges
Serverless usage-based: storage $0.05/GiB-month, writes $0.050/GiB Standard or $0.075 Express, reads $0.050 private / $0.100 internet, plus per-operation fees.
Distribution: how it reaches customers
Self-serve dashboard and playground, open-source s2-lite for self-hosting, docs, Slack/Discord support.
Funding history and coverage
| Round date | Stage | Amount | Investors | Source |
|---|---|---|---|---|
| — | Y Combinator Fall 2025 | — | Y Combinator | ycombinator.com |
Profiles summarize public reporting and company websites. Business-model notes are MaxBC's reading of that material, not confirmed facts; unknowns are left blank rather than guessed. Updated 2026-10-12.