Stripe Paid

Stripe is a payment infrastructure company: card processing, subscriptions, invoicing and tax in one API. It charges 2.9% + 30¢ per successful card charge in the US, and metered billing lets you charge customers per token or per request.

What is Stripe?

Stripe provides the money layer for software. You integrate Checkout or the Payment Intents API, and it handles card networks, 3D Secure, refunds, disputes and payouts. For AI products specifically, it has become the default because usage-based pricing is a first-class feature rather than an afterthought.

It is not free software. You pay per transaction, plus optional add-ons like Billing, Tax and Radar for Teams.

Product Features

• Metered billing — report usage events, then bill per unit (tokens, credits, API calls) with tiered or graduated pricing.
• Subscriptions — trials, proration, dunning, customer portal, all configurable without code.
• Checkout and Payment Links — hosted pages in 20+ languages and 135+ currencies.
• Radar — fraud scoring on every charge; Radar for Fraud Teams adds custom rules and review queues.
• Tax and Invoicing — automatic sales tax and VAT calculation in 100+ countries.
• Stripe Agent Toolkit — lets an LLM call Stripe APIs safely for support and billing tasks.

Product Highlights

Documentation quality is the actual product advantage. The API reference, test cards and sample code in seven languages reduce integration time to hours. Webhooks are reliable, and test mode is a full parallel universe.

Costs stack up faster than people expect. Card processing is 2.9% + 30¢. Billing adds 0.5% of recurring volume on top. Disputes cost $15 each whether you win or lose. Currency conversion adds 1%.

Two real complaints. First, support on the standard plan can take days by email. Second, if you get classified as a restricted business — and some AI categories get scrutiny — account reviews can freeze payouts without much warning.

Who should use it (and who should not)

Good fit: SaaS and AI products in the US, EU and UK charging subscriptions or usage. Bad fit: marketplaces that want money held in escrow (Stripe Connect works but adds complexity), or merchants in countries where Stripe does not operate.

Use Cases

• Billing an AI API per 1,000 tokens with a monthly cap.
• Switching a tool from flat plans to credit packs without a migration.
• Blocking card testing attacks on a public signup form with Radar rules.
• Automating refunds inside a support chatbot using the Agent Toolkit.
• Selling to EU customers with automatic VAT invoices.

Quick Summary

• Stripe is a payments and billing API used by millions of businesses.
• US card pricing is 2.9% + 30¢; Billing adds 0.5%; disputes cost $15.
• Metered billing is the reason many AI products pick it.
• It is not free and has no revenue-share plan.
• Support speed and restricted-business reviews are the usual gripes.