Seed · Developer Tools · London, United Kingdom · Founded 2025 · 2–10 employees
Autumn provides developer infrastructure focused on billing and pricing for AI-focused SaaS, replacing the need to build complex Stripe logic by acting as a system of record for subscriptions, usage limits, credit ledgers and feature entitlements. It is open source, integrates via three core functions, and serves fast-growing developers and AI startups. The company has raised a multimillion‑dollar round in late 2025, including funding from Y Combinator and notable angels, and has quickly gained traction among indie developers and AI startups that praise its ease of use and reliability. Revenue milestones, employee count, and YC backing signal early-scale product‑market fit and investor confidence.