UK AISI alignment and monitorability evaluations
UK AISI suites: Out-of-Scope Supply Chain Attack simulation, AI-safety-research sabotage in a simulated company, no-CoT time horizon, CoT legibility.
- Made by
- UK AI Security Institute
- Kind
- Deception and alignment
- Scored
- Graded by a model
- Answers
- Agent task
- Tasks
- Kept private
- Last in a system card
- April 2026
- Last model added
- April 2026
4
System cards report it, from 1 lab
No scores here yet
No lab, leaderboard or Epoch AI run has reported a score for UK AISI alignment and monitorability evaluations yet.
Labs report it only in system cards
We read the headline results of 522 launch posts from 52 labs, and none of them list this benchmark. Some system cards do, below.
4 system cards report it, from 1 lab
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 |
|---|---|---|---|---|
| Apr 7, 2026 | Claude Mythos Preview system card | External testing of two unreleased checkpoints by an unnamed partner, AI safety research compromise scenarios, no overall: no unprompted compromise, continued compromise in 7% of continuation cases (12% earlier checkpoint), 78% and 74% accuracy telling evaluation from deployment, unprompted evaluation awareness 12% (4.2.5) | Alignment | |
| Feb 5, 2026 | Claude Opus 4.6 system card | UK AISI external testing of an early snapshot, AI safety research sabotage scenarios, no overall (6.2.6). No research sabotage found; mentions being evaluated in 2.3% of interactions; identifies the evaluation in 80% of pairs and 45.5% of single interactions; refuses safety research tasks in 26% | Alignment | |
| Nov 24, 2025 | Claude Opus 4.5 system card | UK AISI external testing of a pre-release Claude Opus 4.5 Preview snapshot, safety research sabotage scenarios, no overall (6.13). No research sabotage found. Mentions of being tested 12.7% without reasoning and 17.1% with reasoning | Alignment | |
| Sep 29, 2025 | Claude Sonnet 4.5 system card | UK AISI external testing of an early snapshot, no overall. Verbalized evaluation awareness in 16.6% of outputs. Self-preservation actions reduced 1.9 times relative to Claude Sonnet 4 (7.3.1) | Alignment |
More in Safety and alignment
- FORTRESS In use Paired adversarial and benign national-security misuse prompts. Rubric-graded risk score on adversarial and over-refusal score on benign prompts. Claude Opus 5.5 5.78%
- StrongREJECT In use Forbidden-prompt jailbreak benchmark with a rubric grader that scores how useful a non-refusal actually is.
Inkling 98.6% - Gray Swan IPI Arena benchmark In use Indirect prompt-injection attacks from public red-teaming competitions replayed on tool, coding and browser agents. Attack success rate at k attempts.
Gemini 4 Carbon 0% - DistressBench In use Models reply as a chatbot to 718 simulated users in psychological crisis, in single-turn and multi-turn chats. Three judge models score replies against clinician-written rubrics.
Muse Spark 1.2 88.4% - Lakera B3 (Backbone Breaker Benchmark) In use Crowdsourced prompt-injection attacks hit backbone LLMs inside agent threat snapshots at three defense levels. The score is attack resistance, 100 minus the board's vulnerability percentage. Claude Opus 4.5 89%
- IHEval In use Models face conflicts between system, user and tool instructions. Reports a composite score for following the higher-priority instruction. GPT-4o 70%