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Test bench · as of 30 September 2026

The test bench

Three short German texts about a made-up family. Two readers: Anna on the iPhone, offline, and a big AI in the cloud. We count what ends up correctly in memory, and what ends up wrong.

Current result

Anna 13 of 16, 0 false entries. AI 11 of 16, 1 false entry. The AI's false entry concerns “Jonas no longer lives in Leipzig”: it stores a negation instead of an end, and the end itself is missing. That is an error, and it is down to my protocol, which doesn't offer it an end yet. Anna asks back 13 times, the AI never.

AI: Claude Opus 5 (Anthropic), protocol v18, measured on 29 September 2026. Anna measured on 30 September 2026. Anna asks questions back; the test bench answers them the way a person would.

The three texts

Profile of Jonas Berger (“Steckbrief”)

Jonas Berger wohnt in Leipzig. Jonas arbeitet bei Kranich Logistik. Jonas ist mit Miriam verheiratet. Paul ist der Bruder von Miriam.

Family note (“Familiennotiz”)

Clara ist die Tochter von Jonas. Ben ist der Sohn von Jonas. Jonas ist der Vater von Clara. Clara ist nicht die Tochter von Paul.

Weekly note (“Wochennotiz”)

Paul wohnt in Dresden. Ben arbeitet bei Kranich Logistik. Miriam gibt Clara ein Buch. Jonas wohnt nicht mehr in Leipzig.

Every line

TextSentence (German)What you should know afterwardsAnnaAI
ProfileJonas Berger wohnt in Leipzig.Jonas lives in Leipzig.✓✓
ProfileJonas arbeitet bei Kranich Logistik.Jonas has an employment.
Anna reads “Kranich Logistik” as two participants and asks for two sentences. The AI writes “works at” instead of the employment the protocol asks for: right in substance, wrong in form.
✗✗
ProfileJonas ist mit Miriam verheiratet.Jonas and Miriam are married.✓✓
ProfilePaul ist der Bruder von Miriam.Miriam has a brother, Paul.✓✓
Family noteClara ist die Tochter von Jonas.Jonas has a daughter, Clara.✓✓
Family noteBen ist der Sohn von Jonas.Jonas has a son, Ben.✓✓
Family noteJonas ist der Vater von Clara.Clara has a father, Jonas.✓✓
Family note(same sentence)Jonas still has Clara exactly once as a daughter, no duplicate.✓✓
Family noteClara ist nicht die Tochter von Paul.Stored as a negation.✓✓
Family note(same sentence)Clara doesn't wrongly become Paul's daughter.✓✓
Weekly notePaul wohnt in Dresden.Paul lives in Dresden.✓✓
Weekly noteBen arbeitet bei Kranich Logistik.Ben has an employment.
Same as above.
✗✗
Weekly noteMiriam gibt Clara ein Buch.A giving, with Miriam as the one who gives.
Anna still lacks the rule for three participants without articles. The AI records the event cleanly.
✗✓
Weekly noteJonas wohnt nicht mehr in Leipzig.Not stored as a negation.
“No longer” is an end, not a negation. The AI writes a negation because my protocol v18 doesn't offer it an end yet. For the AI a false entry that is on me; it misses the two lines below.
✓✗
Weekly note(same sentence)Living in Leipzig is recorded.✓✗
Weekly note(same sentence)The living has an end.✓✗

Rules

Change log

DateChangeEffect on the number
29 Sep 2026The AI is measured with the new protocol v18 on the same expectations. The three “no longer” lines count as errors for it, caused by my protocol.Anna 13 of 16, 0 false entries; AI 11 of 16, 1 false entry.
29 Sep 2026“Jonas no longer lives in Leipzig.” counts as an end of living there instead of a negation. This makes 16 expectations instead of 14.Numbers before and after are not directly comparable.
28 Sep 2026Removed training examples that resembled the test sentences. Since then: the test bench is only for measuring, never for practising.Measured again: still 4 of 14, 0 false entries.
26 Sep 2026Test bench introduced: three texts, 14 expectations.Anna 1 of 14; AI 12 of 14 with 4 invented relations (protocol v13).

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