OpenAI is generating ~73% of its revenues from ChatGPT subscriptions and is less dependent on API revenues. The opposite is true for Anthropic, according to analysis by FutureSearch and Tanay Jaipuria, which estimates that Anthropic is generating over ~85% of its revenues from its API products.

This week, OpenAI announced a series of new updates including prompt caching that will likely drop API costs down further.

Given the threat of open-source models, OpenAI doesn’t have much of a choice but this revenue breakdown is still fascinating.