Code · blind round

R40 · isPalindrome (ignore case & non-alphanumerics)

blind round 4/8 local models answered task written in German

Answers below are anonymized and shuffled. Read, judge, pick a favourite — then scroll down and reveal the models.

Show task

Schreibe eine JavaScript-Funktion isPalindrome(s), die true zurückgibt, wenn s ein Palindrom ist — Groß/Kleinschreibung ignorieren und alle Nicht-Alphanumerischen Zeichen ignorieren. Gib NUR die Funktion aus, keine Erklärung, kein Markdown.

The answers — blind

Local models (Brain cluster) — identical prompt, anonymized order

MODEL Aqwen3:8bDNF

No usable answer reached the harness (ERR). Counted as a did-not-finish.

MODEL Bqwen3.5:9b

const isPalindrome = (s) => {
  // Clean the string by converting to lowercase and keeping only alphanumeric characters
  const cleanedString = s.toLowerCase().replace(/[^a-z0-9]/g, '');

  let left = 0;
  let right = cleanedString.length - 1;

  while (left < right) {
    if (cleanedString[left] !== cleanedString[right]) {
      return false;
    }
    left++;
    right--;
  }
  return true;
};

MODEL Cgemma4:26b

function isPalindrome(s) {
  const cleaned = s.toLowerCase().replace(/[^a-z0-9]/g, '');
  return cleaned === cleaned.split('').reverse().join('');
}

MODEL Dqwen3-coder:30b

function isPalindrome(s) {
  const cleaned = s.toLowerCase().replace(/[^a-z0-9]/g, '');

  let left = 0;
  let right = cleaned.length - 1;

  while (left < right) {
    if (cleaned[left] !== cleaned[right]) {
      return false;
    }
    left++;
    right--;
  }

  return true;
}

MODEL Edeepseek-r1:14bDNF

No usable answer reached the harness (TIMEOUT). Counted as a did-not-finish.

MODEL Fmistral-small:24bDNF

No usable answer reached the harness (TIMEOUT). Counted as a did-not-finish.

MODEL Gqwen3:14b

function isPalindrome(s) {
    const cleanedS = s.toLowerCase().replace(/[^a-z0-9]/g, '');

    let left = 0;
    let right = cleanedS.length - 1;

    while (left < right) {
        if (cleanedS[left] !== cleanedS[right]) {
            return false;
        }
        left++;
        right--;
    }

    return true;
}

MODEL Hllama3.1:8bDNF

No usable answer reached the harness (TIMEOUT). Counted as a did-not-finish.

Reference

Gold — the correct answerreference

Normalisieren (toLowerCase + [^a-z0-9] entfernen) und mit umgedrehter Zeichenkette vergleichen. Muss 'A man, a plan, a canal: Panama' als true erkennen.

Reveal the models— compare the answers first, then open. Names, blind scores and latencies are hidden until you do.

Who wrote what

Blind label	Model	Blind score	Latency	Status
MODEL A	qwen3:8b	—	—	DNF
MODEL B	qwen3.5:9b	8.0	11.5 s	OK
MODEL C	gemma4:26b	10.0	127.0 s	OK
MODEL D	qwen3-coder:30b	8.0	11.5 s	OK
MODEL E	deepseek-r1:14b	—	—	DNF
MODEL F	mistral-small:24b	—	—	DNF
MODEL G	qwen3:14b	8.0	11.5 s	OK
MODEL H	llama3.1:8b	—	—	DNF

Verdict

4 of 4 answering local models matched the gold answer (blind score ≥ 8): gemma4:26b, qwen3-coder:30b, qwen3:14b, qwen3.5:9b.