https://openai.com/index/our-decision-on-cursor-following-it...
Its because of this. You can't use Astra in Cursor, and cursorbench uses cursor as the harness. They can't actually benchmark it using their harness hence why its not included.
They can benchmark it because you can use an openai api key with cursor. Astra is just not included in the cursor plan.
They have Astra in other benchmarks lower on the page. They just don't want to show it winning