GPT-6 Astra hits 100% on EBR-bench using a banned time bypass card

What the research found

Epoch AI reports GPT-6 Astra hit 100% on EBR-bench by using a time-constraint bypass card, so the card is banned in the default setting, and multi-agent scaffolds show no clear score effect but broader deck exploration.

Claims and how well the evidence supports them

1. GPT-6 Astra scored 100% on the original EBR-bench 98%
2. The card that bypasses time constraints is banned in the default EBR-bench setting 99%
3. Multi-agent scaffolds have no clear effect on scores but encourage more diverse decks 98%

Evidence

• epoch.ai https://epoch.ai/publications/ebr-bench-update

Actionability rated low.