Our results.Our methods.Our limits.

Every number has a date, a method, and its limits.

60/60correct answers when a lie is repeated eight times in a newer document.replayed on November 3, 2026
0 out of 240times Dermioz served the lie alone, out of 240 trick questions.replayed on November 3, 2026
4,729automated tests, all passing.measured on November 7, 2026
The arena · replayed on November 7, 2026

Same questions, same model. Three ways to show it the file.

Same model, same file from a fictional small company. The only thing that changes is how the facts are shown to it: the whole file, a classic RAG, or Dermioz memory.

9 out of 12times GPT-OSS 120B, with the whole file in front of it, repeated the value copied over by the documents.
9 out of 12with a classic vector search (RAG), same model, same questions.
0 out of 12with Dermioz memory. It stayed silent twice, and never repeated the trap.
1 / 12

The file

    The question, on 10/20/2026
    The whole file in the window
    What it read, and its raw answer
    Vector search (RAG)
    What it read, and its raw answer
    Dermioz memory
    What it read, and its raw answer

    Real answers, copied without any edit, temperature 0. The test was run in French, so questions, files and answers are shown in French, exactly as they happened. The judge only reads the “RÉPONSE” (answer) line. File, question and correct answer are drawn from a seed before the call. From the block Dermioz gives the model, only the facts are shown: its internal instructions stay confidential. All raw answers (JSON).

    Inside its head, layer by layer

    A real question from the arena, seen from the inside.

    “What discount do we give Garage Moreau?” From the file to the answer, layer by layer.

    1. What comes in

      27 dated lines: 19 sentences said by the team, 8 imported documents.

    2. Where it comes from

      Every fact keeps its source: a person who said it, or a document that copied it.

    3. The competing versions

      For this question, two values are going around: 25 % and 8 %.

    4. Who wins

      Marc decided on 09/24. The 8 documents only copy the old proposal: they decide nothing.

    5. What the model gets

      One single line, the right one. Not all 27.

    6. Its answer

      The same model answers 25 % with Dermioz, and 8 % with the whole file in front of it.

    Real content: question 1 of the test “The document that keeps repeating”, answers from GPT-OSS 120B, replayed on November 7, 2026. The six layers sum up the engine's steps; the drawing is an illustration.

    The whole brain

    Not just a memory. A cognitive architecture in 13 lobes.

    348modules724links between them13lobes19not wired in yet, shown in grey

    Read on November 7, 2026 from the engine in production. One dot, one module; one line, one real dependency.

    The spec sheet

    Under the hood, in dated numbers.

    Every number comes from a source you can replay.

    95,825lines of code in the engine in productionmap published by the engine, Nov 7, 2026
    348 · 724modules and dependencies, in 13 lobesmap published by the engine, Nov 7, 2026
    4,729automated tests passing, in 322 filesfull suite, Nov 7, 2026
    548commits since the first line, on May 19, 2026repository history, Nov 7, 2026
    4.2 ×less text sent to the model than with the whole file (207 tokens vs 869), for a more accurate answerarena, GPT-OSS 120B, median over 36 questions
    0 out of 12times the outdated value gets through, with each of the three models tested: the gain comes from the architecture, not the modelarena, Nov 7, 2026
    1,456conversation turns for one dollar on GPT-OSS 120B, that's 0.07 cents per turnpublic prices of Sept 1, 2026, measured prompt
    19modules written but not wired in yet: we publish them instead of hiding themmap published by the engine, Nov 7, 2026

    A memory that knows where every fact comes from

    When two versions contradict each other, the source decides, not the number of repeats.

    Model-independent

    Same gain on three models from two vendors: the advantage is in the architecture.

    Less text, cheaper, more accurate

    It only gives the model what matters. Fewer tokens, lower cost.

    A system that audits itself

    It publishes its own map and counts what isn't wired in yet.

    The ranking

    Correct answers, out of 12 questions per test.

    ModelHow it reads the fileThe document that keeps repeatingThe real change of mindWhat it was never toldTotal
    GPT-OSS 120B OpenAI, open weightsDermioz memory10 / 129 / 1212 / 1231 / 36
    GPT-OSS 20B OpenAI, open weightsDermioz memory10 / 129 / 1212 / 1231 / 36
    Qwen 3.8 27B Alibaba, open weightsDermioz memory10 / 129 / 1212 / 1231 / 36
    Qwen 3.8 27B Alibaba, open weightsVector search (RAG)5 / 1212 / 1212 / 1229 / 36
    GPT-OSS 120B OpenAI, open weightsThe whole file in the window3 / 1212 / 1212 / 1227 / 36
    GPT-OSS 120B OpenAI, open weightsVector search (RAG)3 / 1212 / 1212 / 1227 / 36
    Qwen 3.8 27B Alibaba, open weightsThe whole file in the window3 / 1212 / 1212 / 1227 / 36
    GPT-OSS 20B OpenAI, open weightsThe whole file in the window1 / 1212 / 1212 / 1225 / 36
    GPT-OSS 20B OpenAI, open weightsVector search (RAG)1 / 1212 / 1212 / 1225 / 36
    A portable benchmark

    Plug in your model. The benchmark runs on your machine.

    Any OpenAI-compatible model plugs in with one line. The Dermioz mode needs our engine, so we publish every one of its answers.

    git clone https://github.com/polmanas1998-star/membench cd membench python -X utf8 arene.py --modele gpt-4.1 --base-url https://api.openai.com/v1 --cle-env OPENAI_API_KEY --regimes fenetre,rag
    The repeated lie test

    The more a lie is repeated, the more a classic search believes it. Dermioz, never.

    A person states a value. A newer document repeats a false value, more and more often. What does each system hand to the model?

    Dermioz: correct answer alone (60 every time)Classic search: correct answer alone (from 53 down to 6)Classic search: lie alone (from 0 up to 22)Bottom axis: number of times the lie is repeated.

    020406001238 Number of times the lie is repeated Dermioz · 60 lie alone · 22 truth alone · 6
    Dermioz60 correct answers alone out of 60
    Classic vector search6 correct alone · 30 mixed · 22 lies alone · 2 empty

    the correct answer alonethe correct and the false one mixedthe lie alonenothing relevant

    What we did

    • 104 facts, 60 questions (3 draws of 20 questions).
    • For each question: the person states a value, then a newer document repeats a false value 0, 1, 2, 3 or 8 times.
    • Same text, same “imported document” label and the same 6 passages for the classic searches and for Dermioz.
    • Replayed on November 3, 2026 on the code in production. No model call: the benchmark costs nothing and replays identically.

    What it doesn't prove

    • The facts are already extracted: reading free text is not measured here.
    • We count what is handed to the model, not the final sentence it writes.
    • The data is synthetic, not a real company's file. A test inside a company is planned for January 2027.
    Two other tests

    It follows real changes. It doesn't bring old ones back.

    57/60

    When the person really changes their mind

    The new value is served alone 57 times. The other 3 times, the old and the new one are shown together. The old one alone: never.

    replayed on November 3, 2026
    54/54

    When an old document repeats the old value

    The correction holds, even when a document repeats the dropped value up to eight times. This case still failed on October 3: it's fixed.

    replayed on November 3, 2026
    17/18

    Languages understood

    Including 9 non-Latin scripts. Polish still fails.

    measured on September 30, 2026
    Our research directions

    A memory that thinks, not a search engine.

    Memory

    A holographic memory

    New information replaces the old one without erasing it: you can always trace it back.

    Trust

    The rank of sources

    What a person decided weighs more than a document, even one repeated eight times.

    Doubt

    Hallucination as a false déjà vu

    Before answering, it checks that it really remembers, and says when it doesn't know.

    Attention

    The cognitive stance

    A trivial question and a real stake aren't handled the same way.

    What we can't do yet

    We also publish what doesn't work.

    01

    A correction phrased differently can slip past it

    “Les 20 euros ne sont plus valables” (the 20 euros are no longer valid) wasn't recognized as a correction on November 2, 2026, while the singular form is. To fix before the January 2027 test.

    02

    Reading free text isn't measured yet

    Our benchmarks start from facts that are already extracted. Measuring the extraction itself, on real documents, is part of the company test.

    03

    One language out of eighteen still resists it

    Polish failed in the last test, on September 30, 2026.

    04

    A question asked with a verb can slip past it

    “Quel jour livre-t-on la quincaillerie ?” (what day do we deliver the hardware store?) doesn't find the “delivery day” entry, so it says it doesn't know. Found by the arena on November 7, 2026: 5 questions out of 36 fall into this case. It stays silent, it doesn't make things up, but it isn't useful.

    Security

    Checked on November 3, 2026.

    Data in Europe

    The API and your memory are hosted in Frankfurt, encrypted at rest.

    Passwords never stored

    Only an irreversible, salted hash (scrypt) is kept. Changing your password closes all old sessions.

    No third parties on the site

    Fonts and scripts are served by the site itself, including visit measurement, anonymous and cookie-free, done by our host. Only the Google button, on the sign-in page, is loaded from Google.

    Locked scripts

    On our public pages, every script is allowed one by one by its fingerprint: an injected script won't run.

    Encrypted connection

    HTTPS required, old protocols refused, no page can be framed by another site.

    Never sold

    Your data is never sold or handed over, and no model is trained on your conversations.

    Researcher, engineer or CIO? We'll show you the benchmark live.

    The benchmark replays in a few minutes, with no model call. Come watch it run, or send us the test that would make you doubt.

    Book a demoor write to hello@dermiozai.com