What is SaaS (Software as a Service)?

SaaS is software delivered over the internet on a subscription, hosted and maintained by the vendor instead of installed by you.

SaaS products run in the vendor's cloud and reach you through a browser or app, billed monthly or annually per seat, per usage, or both. You get continuous updates, no servers to maintain, and immediate access; the vendor gets recurring revenue and control over your data location. Almost every AI tool you compare is SaaS, which introduces pricing patterns worth understanding. Seat-based pricing punishes wide, light adoption across a team. Usage-based pricing punishes success, since costs rise with volume. Hybrid pricing, now the norm in AI, charges seats plus credits, and the credit allowance is where the real cost hides. Before subscribing, check data ownership and export, whether your content is used for model training, retention after cancellation, uptime commitments, and where data is processed if you have regulatory obligations. The alternatives are open-source self-hosting for control, or paying an API directly if you only need the model rather than the interface.

Also known as

  • software as a service
  • cloud software

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Related terms

  • Freemium — Freemium is a pricing model offering a permanently free tier with limits, with paid plans unlocking capacity or advanced features.
  • Open Source (AI Tools) — Open-source AI means the code, and sometimes the model weights, are published so anyone can inspect, self-host, and modify the software.
  • API (Application Programming Interface) — An API is a defined way for one piece of software to request data or actions from another, and it is how AI tools plug into your stack.
  • No-Code — No-code describes software that lets you build apps, sites, and automations visually, without writing programming code.

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Category: Business Models