No free usage allowance: The Forge LLMs API does not include a free monthly usage quota. All token usage is billed.
Forge LLMs usage is charged to the developer of the Forge app and counted toward your Forge monthly bill.
How billing works
Forge LLMs billing follows a three-step process:
Token usage — Your app consumes input and output tokens when calling an LLM model.
Token-to-credit conversion — Tokens are converted to credits using the model's conversion rate. More powerful models use more credits per token.
Credit-to-cost calculation — Credits are priced in USD to determine your final cost.
On your bill, you see two line items: input credits and output credits. You can also see a detailed breakdown of usage per model in the developer console.
Credit conversion rates
The model names in this table correspond to the Claude variants listed in Forge LLMs models.
The following table shows how many credits each model consumes per 1 million tokens. The USD columns show the effective cost after applying the credit billing rates below.
Model
Credits per 1M tokens
Effective cost per 1M input tokens ($USD)
Effective cost per 1M output tokens ($USD)
Opus 4.6
50 credits
$5
$25
Sonnet 4.5
30 credits
$3
$15
Haiku 4.5
10 credits
$1
$5
Credit billing rates
Credits are billed at the following rates:
Input credits: $0.10 per credit
Output credits: $0.50 per credit
Worked example
Suppose your app consumes the following tokens in a given month:
Opus 4.6: 0.5M input tokens and 0.2M output tokens
Haiku 4.5: 5M input tokens and 1M output tokens
Step 1: Convert tokens to credits
Multiply the token count (in millions) by the model's rate from the table:
Opus 4.6: 0.5M input tokens × 50 credits per 1M tokens = 25 input credits; 0.2M output tokens × 50 credits per 1M tokens = 10 output credits