NaturalOutput analyzes text across 24 linguistic patterns and GPTZero's ML models to give you a clear, actionable verdict — with specific guidance on what to revise.
Three analysis engines working together to give you a reliable, explainable result — not just a number.
24 linguistic heuristics — sentence variability, vocabulary diversity, burstiness, and more — each contributing a weighted signal to the final score.
When enabled, your text is also evaluated by GPTZero's machine learning model, and the results are merged with our pattern analysis for a composite verdict.
Rate limiting, input sanitization, tenant isolation, JWT validation, audit logging, CORS lockdown, and encrypted storage — security is not optional.
Submit your text. Get a detailed breakdown. Know exactly what to fix.
Paste content directly, upload a document, or call the REST API. Anything from a paragraph to a full article.
NaturalOutput runs 24 pattern checks and (optionally) GPTZero ML analysis in parallel, returning results in under 200 ms.
A clear human-confidence score, per-pattern breakdowns, and specific revision suggestions — not just a pass/fail label.
NaturalOutput adapts to the way you work — whether you're polishing an essay, managing a content team, or building integrations.
Buy credits, use them when you need them. No subscriptions, no surprises.
Pattern-only analysis across all 24 heuristics. Fast, lightweight, and ideal for iterative editing.
Get StartedPattern analysis plus GPTZero ML scoring. Credit cost scales with document length for fairness.
Get StartedVolume pricing, dedicated support, SSO, SLA guarantees, and on-premise deployment options.
Contact SalesIntegrate AI detection into your pipeline with a single HTTP call.
curl -X POST https://api.naturaloutput.com/v1/analyze \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"text": "Your content to analyze...",
"engines": ["patterns", "gptzero"]
}'
# Response
{
"human_confidence": 0.87,
"verdict": "likely_human",
"patterns_checked": 24,
"suggestions": [
"Vary sentence openings in paragraph 2",
"Add more colloquial phrasing in the conclusion",
"Break up uniform sentence lengths in paragraph 4"
],
"latency_ms": 142
}Create a free account, get starter credits, and run your first analysis in under a minute.
Create Free Account