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All endpoints on this page are deprecated and will be removed by April 1st, 2026. Use the V3 endpoint instead.

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Root Endpoint Deprecated Removal: April 2026

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POST /

POST https://text.api.pangram.com
Single text classification returning an AI likelihood score. Request Body
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text
string
required
The input text to classify.
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return_ai_sentences
boolean
default:"false"
If true, return a list of the most indicative AI sentences.
Response
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ai_likelihood
float
Classification score from 0.0 (human) to 1.0 (AI).
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text
string
The classified text.
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prediction
string
A string representing the classification.
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ai_sentences
array
List of the most indicative AI sentences. Only present when return_ai_sentences is true.
Example Response 
{
  "text": "The text to analyze",
  "prediction": "Likely AI",
  "ai_likelihood": 0.92
}

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Batch Endpoint Deprecated Removal: April 2026

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POST /

POST https://text-batch.api.pangram.com
Classify multiple texts in a single request. Request Body
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text
array
required
An array of input texts to classify.
Response
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responses
array
The classification results as a list. Each item contains text, ai_likelihood, and prediction.
Example Response 
{
  "responses": [
    {
      "text": "The first text to analyze",
      "prediction": "Likely AI",
      "ai_likelihood": 0.92
    },
    {
      "text": "The second text to analyze",
      "prediction": "Possibly AI",
      "ai_likelihood": 0.58
    }
  ]
}

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Sliding Window Endpoint Deprecated Removal: April 2026

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POST /

POST https://text-sliding.api.pangram.com
Classify a long document using a sliding window across the full text. Request Body
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text
string
required
The input text to segment into windows and classify.
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return_ai_sentences
boolean
default:"false"
If true, return a list of the most indicative AI sentences.
Response
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text
string
The classified text.
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ai_likelihood
float
Classification score from 0.0 (human) to 1.0 (AI).
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max_ai_likelihood
float
Maximum AI likelihood score among all windows.
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avg_ai_likelihood
float
Average AI likelihood score among all windows.
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prediction
string
A string representing the classification.
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short_prediction
string
Short classification string ("AI", "Human", "Mixed").
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fraction_ai_content
float
Fraction of windows classified as AI.
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windows
array
List of windows and their individual classifications.
Example Response 
{
  "text": "Extremely long text.",
  "prediction": "Highly likely AI",
  "ai_likelihood": 1.0,
  "max_ai_likelihood": 1.0,
  "avg_ai_likelihood": 0.6,
  "fraction_ai_content": 0.5,
  "windows": [
    {
      "text": "Extremely long",
      "ai_likelihood": 1.0,
      "prediction": "Highly likely AI"
    },
    {
      "text": "long text.",
      "ai_likelihood": 0.2,
      "prediction": "Unlikely AI"
    }
  ]
}

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Dashboard Endpoint Deprecated Removal: April 2026

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POST /

POST https://dashboard-text.api.pangram.com
Classify text and return a link to a dashboard page with the full result. Request Body
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text
string
required
The input text to classify.
Response
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ai_likelihood
float
Classification score from 0.0 (human) to 1.0 (AI).
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prediction
string
A string representing the classification.
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short_prediction
string
Short classification string ("AI", "Human", "Mixed").
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dashboard_link
string
A link to the dashboard page containing the full classification result.
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fraction_ai_content
float
Fraction of windows classified as AI.
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max_ai_likelihood
float
Maximum AI likelihood score among all windows.
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avg_ai_likelihood
float
Average AI likelihood score among all windows.
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windows
array
List of windows and their individual classifications.
Example Response 
{
  "text": "Extremely long text.",
  "prediction": "Highly likely AI",
  "ai_likelihood": 1.0,
  "dashboard_link": "https://www.pangram.com/history/xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx",
  "max_ai_likelihood": 1.0,
  "avg_ai_likelihood": 0.6,
  "fraction_ai_content": 0.5,
  "windows": [
    {
      "text": "Extremely long",
      "ai_likelihood": 1.0,
      "prediction": "Highly likely AI"
    },
    {
      "text": "long text.",
      "ai_likelihood": 0.2,
      "prediction": "Unlikely AI"
    }
  ]
}

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Extended Endpoint Deprecated Removal: April 2026

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POST /

POST https://text-extended.api.pangram.com
Extended analysis with adaptive boundaries and windowed results. Request Body
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text
string
required
The input text to classify with extended analysis.
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dashboard
boolean
default:"false"
Enable dashboard integration.
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is_public
boolean
default:"true"
Control visibility in dashboard.
Response
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text
string
The input text that was analyzed.
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avg_ai_likelihood
float
Weighted average AI likelihood score across all windows.
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max_ai_likelihood
float
Maximum AI likelihood score among all windows.
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prediction
string
Long-form prediction string representing the classification.
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prediction_short
string
Short-form prediction string ("AI", "Human", "Mixed").
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headline
string
Classification headline summarizing the result.
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windows
array
List of text segments analyzed individually. Each window contains text, ai_likelihood, label, confidence, start_index, end_index, and word_count.
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window_likelihoods
array
AI likelihood scores for each window (list of values from 0.0 to 1.0).
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window_indices
array
Indices indicating the position of each window in the original text (list of [start_char_index, end_char_index]).
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fraction_human
float
Fraction of text classified as human-written (0.0–1.0).
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fraction_ai
float
Fraction of text classified as AI-written (0.0–1.0).
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fraction_mixed
float
Fraction of text classified as mixed content (0.0–1.0).
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metadata
object
Additional metadata about the analysis.
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version
string
Analysis version identifier ("adaptive_boundaries").
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dashboard_link
string
Dashboard link. Only present when dashboard is true. is_public controls visibility.
Example Response 
{
  "text": "The text to analyze with extended classification",
  "avg_ai_likelihood": 0.75,
  "max_ai_likelihood": 0.92,
  "prediction": "Primarily AI-generated, or heavily AI-assisted",
  "prediction_short": "AI",
  "headline": "AI Detected",
  "windows": [
    {
      "text": "The text to analyze",
      "ai_likelihood": 0.85,
      "label": "AI",
      "confidence": "Medium",
      "start_index": 0,
      "end_index": 19,
      "word_count": 4
    },
    {
      "text": "with extended classification",
      "ai_likelihood": 0.65,
      "label": "AI",
      "confidence": "Low",
      "start_index": 20,
      "end_index": 47,
      "word_count": 3
    }
  ],
  "window_likelihoods": [0.85, 0.65],
  "window_indices": [[0, 19], [20, 47]],
  "fraction_human": 0.25,
  "fraction_ai": 0.70,
  "fraction_mixed": 0.05,
  "metadata": {
    "request_id": "123e4567-e89b-12d3-a456-426614174000"
  },
  "version": "adaptive_boundaries",
  "dashboard_link": "https://www.pangram.com/history/123e4567-e89b-12d3-a456-426614174000"
}