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Testeur de Cohérence LLM — Outil en ligne gratuit

Colle N sorties — mesure variance, similarité, stabilité

Colle plusieurs sorties LLM du même prompt. Mesure variance, similarité Jaccard, score de stabilité. Détecte quand baisser la température.

Workflow: Run your prompt 3-10× at your chosen temperature. Paste each output below. We measure the variance across them.
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LLM consistency tester

Measure LLM output variance. Jaccard, cosine, stability score across N runs.

How to use this tool

  1. 1

    Run your prompt 3-10 times

    Same prompt, any model, save the outputs.

  2. 2

    Paste them below

    One output per text area. Use the + button to add more.

  3. 3

    See consistency metrics

    Length variance, Jaccard similarity, cosine, stability score.

Frequently Asked Questions

Why test LLM consistency?
For production LLMs, variance is a killer. A prompt that works 9/10 times but fails the 10th is production-fragile. Teams need to know: is the variance acceptable? Should I lower temperature? Is this task fundamentally non-deterministic?
What is Jaccard similarity?
Jaccard = |A ∩ B| / |A ∪ B| for word sets. Value 1.0 = identical words, 0 = no shared words. For most LLM outputs, 0.3-0.6 = semantically similar with different wording, 0.7+ = very close phrasing.
How to improve consistency?
Lower temperature (0.0-0.3 for deterministic tasks). Add more few-shot examples. Use structured output (JSON schema). Pick a lower-creativity model. For truly deterministic tasks consider fine-tuning.

À retenir

  • LLM Consistency Tester is a free, browser-based ai tool — paste n outputs — measure variance, similarity, stability.
  • Non signup, no downloads, no file uploads — your data stays on your device.
  • Works on desktop, tablet, and mobile. Install as a PWA for offline access.

How to Use LLM Consistency Tester

  1. Open the tool: Launch LLM Consistency Tester on Outilolis — no account or download needed.
  2. Enter your data: Paste text, enter values, or select a file directly in your browser.
  3. Get instant results: Everything is processed locally — results appear immediately.
  4. Copy or download: Save your output or share it. Bookmark for quick access next time.

LLM Consistency Tester — Quick Facts

Prix
Gratuit — sans limites, sans filigrane, sans paywall
Confidentialité
100% dans le navigateur — aucune donnée n’est envoyée à un serveur
Plateforme
Tout navigateur moderne — desktop, tablette ou mobile
Catégorie
AI Outils on Outilolis
Hors ligne
Works offline after first visit (Progressive Web App)
CaractéristiqueDétails
OutilLLM Consistency Tester
CatégorieAI
Inscription requiseNon
Téléversement de fichierAucun — traité dans le navigateur
Compatible mobileEntièrement adaptatif
CoûtGratuit pour toujours

Why Use LLM Consistency Tester?

You should try LLM Consistency Tester for a quick, private way to paste n outputs — measure variance, similarity, stability. All processing happens in your browser. Your files and data never leave your device. According to web.dev, client-side processing is the gold standard for privacy.

On the other hand, dedicated APIs or desktop tools suit batch processing better. They also handle server-side automation. For everyday tasks, browser tools offer the best speed, privacy, and convenience.

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100% Confidentialité. Cet outil fonctionne entièrement dans votre navigateur. Vos données ne sont jamais envoyées à un serveur.