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Fai di più con l'
API Umanizzatore AI

Usa la nostra API all'avanguardia per rilevare e umanizzare contenuti AI

Starting at $0.10 per 1K words.

View Pricing View Documentation
const res = await fetch("https://v2-humanizer.rephrasy.ai/api/", {
  method: "POST",
  headers: {
    "Authorization": "Bearer <your-api-key>",
    "Content-Type": "application/json"
  },
  body: JSON.stringify({
    text: "AI-generated text here.",
    model: "v3",
    words: true
  })
});

const data = await res.json();
// => { output: "Humanized text...", costs: { total: 1.5 } }
200 OKREST API v1
Text HumanizerText DetectorImage Humanizer

API usage

1
NEW

Modello v3 — Miglior modello per GPTZero con opzioni di stile avanzate

Scopri il nuovo modello e come utilizzarlo →

API Parameters


Required Parameters:
 - text (string): The AI-generated text to humanize
 - model (string): "v3" (recommended), "Undetectable Model v2", "Undetectable Model", "SEO Model", or Writing Style ID

Optional Parameters:
 - style (string): Optional writing style for v3 model — "creative", "journalistic", or "professional". If omitted, v3 uses its default behavior.
 - words (boolean): Enable word-based pricing (default: false)
 - costs (boolean): Return cost information (default: false)
 - language (string): Language name (e.g., "English", "German", "French", "Spanish")
                     If not provided, language will be auto-detected

Supported Languages:
 - English        - German         - French
 - Spanish        - Italian        - Portuguese
 - Dutch          - Polish         - Japanese
 - And many more...

Humanizer API Response Example


Response Codes
 - 200 OK: Request successful; scores returned.
 - 422 Bad Request: Invalid input (e.g., missing parameters).
 - 401 Unauthorized: Invalid API key.

 Example Response

{
  "output": "Rephrasy is a service that delivers paraphrasing of AI written text.",
  "new_flesch_score": 68.77
}

 Flesch Score Interpretation:
 - The Flesch score measures readability. Higher scores indicate easier-to-read text.
 - Range: 0-100. A score of 60-70 is easily readable for 13- to 15-year-olds.
 - A higher score often means simpler language.

Assicurati di dare un'occhiata alla nostra
API Rilevatore

API usage

1

Detector API Response Example


Response Codes
 - 200 OK: Request successful; scores returned.
 - 422 Bad Request: Invalid input (e.g., missing parameters).
 - 401 Unauthorized: Invalid API key.

 Example Response (Depth Mode)
{
  "text": "Example text.",
  "sentences": { "Example text.": 5.5 },
  "scores": { "overall": 1.4 }
}

 Score Interpretation:
 - Overall Score: Ranges from 0 (human) to 100 (AI).
 - Sentence Scores (mode = "depth"): 0 is human, 100 is AI.
 - Other modes: 100 indicates human, 0 indicates AI.

What You Can Build

Developers and agencies use the Rephrasy API to power their own products and workflows.

Bulk Content Pipelines

Process hundreds of articles or documents in parallel. Integrate into your existing content workflow via a single POST request.

SaaS Products

Build your own AI humanizer tool on top of Rephrasy. White-label the API or offer it as a feature inside your product.

Browser Extensions

Call the API from a Chrome extension to humanize text inline — directly on Google Docs, WordPress, or any web editor.

Agency Automation

Connect Rephrasy to Zapier, Make, or n8n to automatically humanize AI drafts before they hit your CMS or client delivery.

NEWsynthid-humanizer.rephrasy.ai

Image Humanizer API

Remove invisible AI watermarks (SynthID, StableSignature), detect AI provenance, and humanize images programmatically. Supports single images and batches up to 100.

10 credits / imageSame credit balance as text API

Authentication

Authorization: Bearer <your-api-key>

Website key = high-priority queue · User API key = normal queue

Credits

Credits are deducted at batch submission. Insufficient balance → 402 error, no images processed. Batches auto-delete after 24 hours.

Also available

GET/batches/{id}
GET/batches/{id}/download
POST/remove/visible
POST /batches
# 1 — Submit batch
curl -X POST https://synthid-humanizer.rephrasy.ai/batches \
  -H "Authorization: Bearer <your-api-key>" \
  -F "files=@photo1.png" \
  -F "files=@photo2.jpg"

# => { "batch_id": "a3f9c2b1", "job_count": 2, "status": "queued" }

# 2 — Poll until done (every 5–10 s)
curl https://synthid-humanizer.rephrasy.ai/batches/a3f9c2b1 \
  -H "Authorization: Bearer <your-api-key>"

# => { "status": "done", "done": 2, "total": 2, "download_ready": true }

# 3 — Download ZIP (batch deleted after this)
curl -O https://synthid-humanizer.rephrasy.ai/batches/a3f9c2b1/download \
  -H "Authorization: Bearer <your-api-key>"
200 OKImage API v1

Batch status values

queuedWaiting in queue — queue_position shows place
processingGPU is working on this batch
doneAll images finished, ready to download
failedProcessing failed — check per-job error field

Error codes

400No files / more than 100 files
401Missing or invalid API key
402Insufficient credits
404Batch not found or already downloaded
425Batch not done yet (too early to download)

Bulk Credits — Unbeatable API Pricing

No per-seat fees, no rate limits. Buy credits once, use them any time. The more you buy, the cheaper each request gets.

5,000

credits

$275

$0.0550 / credit

100k words for $11.00
Most Popular

10,000

credits

$500

$0.0500 / credit

100k words for $10.00

20,000

credits

$950

$0.0475 / credit

100k words for $9.50

50,000

credits

$2,250

$0.0450 / credit

100k words for $9.00

* Based on 100 × 1,000-word requests with word-based pricing enabled (2 credits each = 200 credits total)

Real cost — humanizing 100,000 words

100 requests of 1,000 words each, word-based pricing enabled (words: true):

Rephrasy API (10K bulk)

$10.00

$0.10 per 1K words — no subscription, no monthly cap

WriteHuman Premium

$17.25

$69/mo plan pro-rated for 100K of 400K words

Undetectable AI Premium

$47.25

$15.75/mo × 3 months needed for 100K words

* Competitor prices based on publicly listed plans. WriteHuman: $69/mo Premium. Undetectable AI: $15.75/mo Premium (35K words/mo).

Ready to integrate?

Sign up, subscribe to any plan, and find your API key in your account dashboard. Start making requests in minutes.

Get API KeyDocumentazione API

API Umanizzatore AI progettata per gli sviluppatori

La nostra API Umanizzatore AI è progettata per gli sviluppatori che desiderano umanizzare contenuti generati dall'AI in massa. L'API è progettata per essere semplice, veloce e affidabile. Per piani solo API, contattaci direttamente!

  • Ottieni un abbonamento con Rephrasy

    Riformula i contenuti al volo con la nostra potente API.

  • Usa il Rilevatore AI di Rephrasy

    Rileva contenuti AI con il nostro potente strumento di rilevamento AI su larga scala.

  • Combina entrambi, Rilevatore AI e Umanizzatore per i migliori risultati

    Usa il rilevatore AI e l'umanizzatore di Rephrasy insieme per i migliori risultati.

Inizia Ora

Converti il testo AI in testo umano — AI Humanizer gratuito

Il #1 AI Humanizer scelto da oltre 125.000 studenti e professionisti