Deprecated Endpoints - Pangram Labs

All endpoints on this page are legacy AI detection endpoints. Use the current async AI detection API for single inputs or the Bulk API for many inputs.

Synchronous V3 Endpoint Deprecated Legacy

POST /v3

POST https://text.api.pangram.com/v3

Synchronous V3 classification endpoint. Use POST /task and GET /task/{task_id} on https://text.external-api.pangram.com instead. Request Body

string

required

The input text to analyze.

boolean

default:"false"

Whether to include a public dashboard link in the response.

Response Returns the completed AI detection result directly, including prediction, prediction_short, authorship fractions, segment counts, and windows.

Root Endpoint Deprecated Legacy

POST /

POST https://text.api.pangram.com

Single text classification returning an AI likelihood score. Request Body

string

required

The input text to classify.

boolean

default:"false"

If true, return a list of the most indicative AI sentences.

Response

float

Classification score from 0.0 (human) to 1.0 (AI).

string

The classified text.

string

A string representing the classification.

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
}

Batch Endpoint Deprecated Legacy

POST /

POST https://text-batch.api.pangram.com

Classify multiple texts in a single request. Use the current Bulk API instead. Request Body

array

required

An array of input texts to classify.

Response

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
    }
  ]
}

Sliding Window Endpoint Deprecated Legacy

POST /

POST https://text-sliding.api.pangram.com

Classify a long document using a sliding window across the full text. Request Body

string

required

The input text to segment into windows and classify.

boolean

default:"false"

If true, return a list of the most indicative AI sentences.

Response

string

The classified text.

float

Classification score from 0.0 (human) to 1.0 (AI).

float

Maximum AI likelihood score among all windows.

float

Average AI likelihood score among all windows.

string

A string representing the classification.

string

Short classification string ("AI", "Human", "Mixed").

float

Fraction of windows classified as AI.

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"
    }
  ]
}

Dashboard Endpoint Deprecated Legacy

POST /

POST https://dashboard-text.api.pangram.com

Classify text and return a link to a dashboard page with the full result. Request Body

string

required

The input text to classify.

Response

float

Classification score from 0.0 (human) to 1.0 (AI).

string

A string representing the classification.

string

Short classification string ("AI", "Human", "Mixed").

string

A link to the dashboard page containing the full classification result.

float

Fraction of windows classified as AI.

float

Maximum AI likelihood score among all windows.

float

Average AI likelihood score among all 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"
    }
  ]
}

Extended Endpoint Deprecated Legacy

POST /

POST https://text-extended.api.pangram.com

Extended analysis with adaptive boundaries and windowed results. Request Body

string

required

The input text to classify with extended analysis.

boolean

default:"false"

Enable dashboard integration.

boolean

default:"true"

Control visibility in dashboard.

Response

string

The input text that was analyzed.

float

Weighted average AI likelihood score across all windows.

float

Maximum AI likelihood score among all windows.

string

Long-form prediction string representing the classification.

string

Short-form prediction string ("AI", "Human", "Mixed").

string

Classification headline summarizing the result.

array

List of text segments analyzed individually. Each window contains text, ai_likelihood, label, confidence, start_index, end_index, and word_count.

array

AI likelihood scores for each window (list of values from 0.0 to 1.0).

array

Indices indicating the position of each window in the original text (list of [start_char_index, end_char_index]).

float

Fraction of text classified as human-written (0.0–1.0).

float

Fraction of text classified as AI-written (0.0–1.0).

float

Fraction of text classified as mixed content (0.0–1.0).

object

Additional metadata about the analysis.

string

Analysis version identifier ("adaptive_boundaries").

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"
}

​Synchronous V3 Endpoint Deprecated Legacy

​POST /v3

​Root Endpoint Deprecated Legacy

​POST /

​Batch Endpoint Deprecated Legacy

​POST /

​Sliding Window Endpoint Deprecated Legacy

​POST /

​Dashboard Endpoint Deprecated Legacy

​POST /

​Extended Endpoint Deprecated Legacy

​POST /

Synchronous V3 Endpoint Deprecated Legacy

POST /v3

Root Endpoint Deprecated Legacy

POST /

Batch Endpoint Deprecated Legacy

POST /

Sliding Window Endpoint Deprecated Legacy

POST /

Dashboard Endpoint Deprecated Legacy

POST /

Extended Endpoint Deprecated Legacy

POST /