Comment by tomjakubowski

Anthropic advertises volume discounts:

Volume discounts may be available for high-volume users. These are negotiated on a case-by-case basis.

* Standard tiers use the pricing shown in Model pricing

* Enterprise customers can contact sales for custom pricing

And there are discounts available through "Claude Platform on AWS":

Anthropic rates your token usage in USD at standard per-model, per-feature rates, applies any negotiated discount, converts the result to CCUs at $0.01 per CCU, and reports the CCU quantity to AWS Marketplace hourly. Your AWS bill shows a single CCU line item.

https://platform.claude.com/docs/en/about-claude/pricing

On the other hand, contrary to Anthropic's documentation, another source claims they've killed pre-existing API volume discounts for large enterprise customers as of April: https://itbrief.news/story/anthropic-shifts-enterprise-billi...