Feature

#What is a Feature?

A Feature is a product feature defined as part of your product catalog. Features are used to define the entitlements for your APIs and services. For example:

Feature	Plan 1	Plan 2
Feature 1: Seats	5	25
Feature 2: Emails	1,000 /m	100,000 /m
Feature 3: Tokens	10,000 /m	1,000,000 /m

Features can have usage limits. For example, you can define a feature with a limit of 1,000 emails per month. When the subject exceeds the limit, the system can enforce a rate limit or block the subject from using the feature. Limits are also useful for upselling. For example, you can message the customer to upgrade to a higher plan when they reach the limit.

To define a feature with a limit, use Ledger to grant usage credits to the subject.

#Properties

A feature has the following properties:

Property	Description
Name	A human-readable name for the feature.
Meter	A meter to measure the usage of the feature.
Meter Group By Filter	To filter for a subset of usage in the meter.

#Examples

Here is an example of a feature:

#GPT-4 Tokens

The feature GPT-4 Tokens is used to grant tokens for the GPT-4 API.

Property	Value
Name	GPT-4 Tokens
Meter	tokens_total
Meter Group By Filter	model=gpt-4

#Emails

The feature Email Quota is used to grant email quotas.