The AI Daily Brief · Tuesday, September 8, 2026
OpenAI's GPT-6 Astra shows significant advancements in science and math, achieving a 97.6% score on frontier math tier four and outperforming Fable 5.1 on terminal bench science. In cybersecurity, Astra achieved 100% on exploit bench and scored 39% on a vulnerability benchmark, a substantial increase over GPT-5.6 sole.
“On terminal bench science, Astra scored 64.6%, beating Fable 5.1 at 52.6% and absolutely demolishing GPT-5.6 sole at 22.4%.”
“Astra scored 100% on exploit bench across all effort levels, suggesting it can build and execute exploits with little difficulty.”
“Using an internal benchmark of recently disclosed vulnerabilities, Astra scored 39%, compared to just 5.5% for GPT-5.6 sole.”