Definitely interesting seeing it grow there. I'm now curious to see if it's overall market usage growing for LLMs (with more OpenAI and Anthopic usage in a similar growth rate), or if it's more heavily weighted towards open models specifically.
With the price to performance of the latest open models, I think most cases for integration into applications would get a best bang for the buck from an open model.
Yes, but there may be other events that are correlated.
For example, they changed their fee structure in June. It is possible that users of closed models moved from OpenRouter to directly using OpenAI/Anthropic/Google (or maybe Amazon Bedrock), while users of open models are happy with OpenRouter as direct providers can sometimes be unstable.
With the price to performance of the latest open models, I think most cases for integration into applications would get a best bang for the buck from an open model.