Skip to main content
1

Set your API key

All requests require your API key in the x-api-key header.
export PANGRAM_API_KEY=<your API key>
2

Detect AI-generated text

Main prediction (V3)

Returns detailed analysis with AI-assistance detection and segment-level metrics.
curl -X POST https://text.api.pangram.com/v3 \
  -H "Content-Type: application/json" \
  -H "x-api-key: $PANGRAM_API_KEY" \
  -d '{
    "text": "The text to analyze"
  }'
Example Response
{
  "text": "The text to analyze",
  "version": "3.0",
  "headline": "AI Detected",
  "prediction": "We are confident that this document is a mix of AI-generated, AI-assisted, and human-written content",
  "prediction_short": "Mixed",
  "fraction_ai": 0.70,
  "fraction_ai_assisted": 0.20,
  "fraction_human": 0.10,
  "num_ai_segments": 7,
  "num_ai_assisted_segments": 2,
  "num_human_segments": 1,
  "windows": [
    {
      "text": "The text to analyze",
      "label": "AI-Generated",
      "ai_assistance_score": 0.85,
      "confidence": "High",
      "start_index": 0,
      "end_index": 19,
      "word_count": 4,
      "token_length": 5
    }
  ]
}
Key response fields:
  • fraction_ai / fraction_ai_assisted / fraction_human — breakdown of text by authorship
  • windows — segment-level classifications with confidence scores
  • headline — summary classification (e.g., “AI Detected”, “Human Written”)
Pass public_dashboard_link: true to get a shareable link to the results:
curl -X POST https://text.api.pangram.com/v3 \
  -H "Content-Type: application/json" \
  -H "x-api-key: $PANGRAM_API_KEY" \
  -d '{
    "text": "The text to analyze",
    "public_dashboard_link": true
  }'
The response will include a dashboard_link field with the URL.
3

Check for plagiarism

Check text against a database of online content. Note the different base URL.
curl -X POST https://plagiarism.api.pangram.com \
  -H "Content-Type: application/json" \
  -H "x-api-key: $PANGRAM_API_KEY" \
  -d '{
    "text": "Text to check for plagiarism"
  }'
Example Response
{
  "text": "Text to check for plagiarism",
  "plagiarism_detected": true,
  "plagiarized_content": [
    {
      "source_url": "https://example.com/source",
      "matched_text": "Text to check for plagiarism",
      "similarity_score": 0.95
    }
  ],
  "total_sentences": 1,
  "plagiarized_sentences": 1,
  "percent_plagiarized": 100.0
}

Error Handling

Status CodeDescription
400 Bad RequestThe request body is not properly formatted.
401 UnauthorizedThe x-api-key is missing, invalid, or does not have enough credits.
500 Internal Server ErrorThere was an error processing the request.
If you are running into errors, please reach out at support@pangram.com.