[andai]

grok-4-1-fast was retired about a month ago.

Requests to grok-4-1-fast-non-reasoning now silently route to grok-4.3 (a 5x more expensive model), with reasoning set to "none".

https://docs.x.ai/developers/migration/may-15-retirement

TFA was published today, which implies grok-4.3 was used.

[embedding-shape]

What specific single model being used is like the least of the issues with their methodology.