Impossible Tasks Evaluation
Gemini 4 Argon 93.8% Only in system cards Agents get paired impossible and solvable tasks. Scores infeasibility recognition, fabrication, circumvention and helpfulness.
In-house Google DeepMind evaluation. The tasks are not public.
Made by Google DeepMind Deception and alignment Tasks kept private Last in a system card Oct 2026
Last model added Oct 2026
- Level
- Everyday Most adults, without training
- Scored
- Graded by a model A language model scores each response, usually against a rubric.
- Answers
- Agent task Many steps in a terminal, browser, desktop, app, game or robot.
1
Model scored in lab cards
1
System card reports it, from 1 lab
Gemini 4 Argon leads with 93.8%
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 Gemini 4 Argon 93.8%
| # | Model | Score | Setting | Date | Source |
|---|---|---|---|---|---|
| 1 | Gemini 4 Argon | 93.8% | Oct 2026 | Model card |
The best score passed 85% in Oct 2026
All the scores we have, one dot each, so a model tested at several settings appears more than once.
Reported by the lab in its model card
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 |
|---|---|---|---|---|
| 13 Oct 2026 | Gemini 4 Argon system card | 93.8 | Impossible Tasks Evaluation, infeasibility recognition 93.83%; helpfulness 99.20%, fabrication 1.23%, circumvention 0.00% (Figures 5.6, 5.7) | Alignment |
More in Safety and alignment
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