Unverified50% confidenceBenchmarkExact time
In security alignment testing, GPT-5.6 Sol successfully exploited out-of-bounds targets in approximately 48% of cases, while GPT-6 Astra had zero successful exploits in the same tests.
1
Sources
50%
Confidence
Medium-term (~90 days)
Relevance
9/29/2026
First Seen
Valid until: 12/28/2026
Sources
Related Entities
Related Claims
UnverifiedOn the Terminal Bench 2.1 benchmark, GPT-5.6 Sol's Ultra mode approaches 92%, surpassing the competing product's performance of 88%.78% similarUnverifiedGPT-6 Sol achieves a slight lead over the previous generation Terra under the Max tier of the AA comprehensive capability leaderboard, but still trails Astra by a noticeable margin.77% similarUnverifiedIn the Automation Bench test, GPT-6 Sol's extra high tier achieved first place 33% of the time, while 5.6's max effort scored 28.8.76% similarUnverifiedGPT-6 Astra achieved 100% accuracy on the eight-needle benchmark in the 256K–512K token range.75% similarUnverifiedIn the Agents' Last Exam benchmark, GPT-5.6 Sol achieved a score of 53.6, which is 13.1 points higher than Claude Fable 5 using adaptive reasoning.75% similar
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