DOCS · INDEX
Documentation
Pick a category to start reading — integration, error codes, model selection and billing, all in one place.
Quickstart
Create a key, make your first call, see it billed
What is Xisu AI? Supported models, protocols and clients
Connect to the Xisu AI API in 5 minutes: Python, Node.js and curl
Use your existing SDK or client
+2 more
API & Error Codes
Endpoints, auth, streaming, error codes and rate limits
Endpoints and authentication
Error codes and rate limits
API compatibility and parameters
+5 more
Models & Selection
Available models, how to choose, how pricing is quoted
How to choose a Xisu AI model: GPT, Claude and what each is good for
How to check you are getting the real model
Billing & Top-ups
Balance, usage, invoices, top-ups and refunds
How billing works
Top-ups and refunds
Reconciling usage and charges
Account & Security
Sign-up, two-factor auth, keeping keys safe
Data security and API key security at Xisu AI