AI Alliancen / Weekly newsletter
Week 41 20265 Oct – 11 Oct 2026
When good AI answers need to hold up in practice
This week points to a shared question: How do we know AI helps with the task we actually need to perform? We look at municipal expectations, staff learning, supplier dependencies and agents' access to data. The week's concept is AI evaluation, with an illustrative municipal example.
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Selected on Friday 9 October. The news is from this week; the knowledge section includes both new methods and a clearly dated older NIST source. Surveys, policy working papers and vendor experience are distinguished from measured municipal impact. Suggestions for your practice are our editorial judgement.
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The week’s concept / Explained properly
AI evaluation
AI evaluation is a systematic examination of how an AI system performs specified tasks against criteria chosen in advance. It should help us decide where the system can be used and what we still do not know.
A good demonstration shows one successful run. An evaluation also examines routine, difficult and unexpected situations. It therefore starts with the task: Should AI help make letters understandable, find information or use a tool? These are different questions requiring different tests.
A test score concerns the tasks and conditions examined. NIST distinguishes performance on a fixed test set from estimated performance on similar new tasks. The latter requires assumptions and an account of uncertainty. A small difference between two systems is not automatically a sound basis for choosing one.
A language-model evaluation can be described through a set of tasks, a way of solving them and a way of assessing the result; AISI's Inspect uses this structure. For an agent, we should also inspect the workflow: Which information was read, which tools were used and where could a person stop the work?
An AI model can help judge answers, but its judgements may also be wrong. Consequential assessments should be checked by people with relevant expertise. Record the model version, instructions, sources and tools so changes can be examined again. We are evaluating a system in its actual context, not just a model name.
The tasks
Choose examples resembling the work, including situations in which the system should ask for help. Hold back some tasks while improving the solution.
The criteria
Agree what a good answer must satisfy: correct content, clear language and preserved deadlines. Report serious errors separately; an average must not hide them.
The test run
Run the same bounded test on the versions you want to compare. Save inputs, answers and relevant logs. Examine variation and record time and costs.
The assessment
Inspect specific failures and uncertainty. Describe what the test shows, what it does not cover and which tasks still require human oversight.
Illustrative municipal example
Can AI make a citizen letter easier to understand?
An illustrative municipal team wants to trial AI to help staff rewrite language. The system must not make administrative decisions or send letters automatically. The numbers below illustrate a small initial test; they are not results from an actual municipality.
- Create 30 entirely fictional letters without personal data. Include short and difficult letters, missing information, amounts, deadlines and text trying to make the model change its task.
- Use 20 letters for development and keep 10 new letters out of ongoing tuning. Agree requirements before seeing answers: preserve meaning and do not change or invent amounts or deadlines.
- Test the selected versions on the same held-back letters, preferably several times. Record inputs, outputs, model and instruction versions, time and costs. Ask two specialists to assess answers without knowing the system's name.
- Compare readability, factual errors and disagreements between assessors. One changed amount is a specific failure to investigate; good answers elsewhere do not make it disappear.
- Adjust the solution and then try different new examples. Describe limitations and retain staff review before use. A small test may justify the next investigation, but cannot prove that all future letters will be correct.
The pitfall is turning an average score into a general approval. Examine types of failure, task coverage and uncertainty. Evaluation does not replace a separate assessment of legal basis, data protection, security or accountability.
Sources behind the explanation
The explanation draws on the sources below. The municipal example is our own illustration, not a reported implementation or measured result.
Editorial selection and explanation: AI Alliancen · Prepared with AI assistance and source checks. Public-sector applications are editorial suggestions, not measured effects or legal approval.