LiteLLM
Route model APIs through one gateway with budgets and usage tracking.

Overview
LiteLLM provides a model gateway and SDK with a common API, provider routing and cost tracking. Start with the official proxy quick start, configure a limited provider key and test one application. Use scoped keys and budgets before adding teams.
API gateway · Budgets · Models
Install for free from the official publisher
Original source & installation instructions
Community software does not supply model credit. Enterprise authentication and management features may require a license.