VCT-v2
Models answer an updated set of expert virology troubleshooting questions from SecureBio. Scored as refusal-corrected accuracy.
279 text and image questions with a private holdout. 35 PhD virologists give the expert baseline, reusing 216 original VCT expert answers rescored. Top models reach about 45%.
- Level
- Expert Specialists with years of training, often over hours of work
- Scored
- Checked automatically A program checks the result against an answer key, unit tests or the expected final state.
- Answers
- Multiple choice
GPT-6 Astra leads with 57.7%
Best score per model as labs report them in their own cards. Labs pick their own settings, so these compare less cleanly than independent runs.
- 1 GPT-6 Astra 57.7%
| # | Model | Score | Setting | Date | Source |
|---|---|---|---|---|---|
| 1 | GPT-6 Astra | 57.7% | Sep 2026 | Model card |
Scores over time
All the scores we have, one dot each, so a model tested at several settings appears more than once.
Labs report it only in system cards
We read the headline results of 479 launch posts from 51 labs, and none of them list this benchmark. Some system cards do, below.
One system card reports it
Besides launch posts, we read the system cards, model cards and technical reports labs publish with a release. They report far more, including safety and frontier-risk tests.
| Date | Document | Score | As the document writes it | Section |
|---|---|---|---|---|
| 3 Sep 2026 | GPT-6 Astra system card | 57.7 | SecureBio VCT-v2, refusal-corrected accuracy, pre-release checkpoint (10.1.1.4) | Bio and chem risk |
Versions
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