Depends on how its implemented, but Amazon already did add gpt-oss-20b so if the model is similar enough to the OSS variant of GPT, it might not have been as complicated as you might think.

I imagine there's lots of custom kernels and optimization...

Openai hasn't been publishing innovations for quite a while.

Neither has anthropic.

They're both just stealing ideas from pimono extensions

Some say they have been stealing ideas from Chaebols [0] on circular deals [1], government reciprocation, & monopolisation.

[0] https://business.columbia.edu/sites/default/files-efs/imce-u...

[1] https://www.reuters.com/business/autos-transportation/compan...