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

text

string

required

The input text to analyze.

public_dashboard_link

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

text

string

required

The input text to classify.

return_ai_sentences

boolean

default:"false"

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

Response

ai_likelihood

float

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

text

string

The classified text.

prediction

string

A string representing the classification.

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
}

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

text

array

required

An array of input texts to classify.

Response

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
    }
  ]
}

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

text

string

required

The input text to segment into windows and classify.

return_ai_sentences

boolean

default:"false"

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

Response

text

string

The classified text.

ai_likelihood

float

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

max_ai_likelihood

float

Maximum AI likelihood score among all windows.

avg_ai_likelihood

float

Average AI likelihood score among all windows.

prediction

string

A string representing the classification.

short_prediction

string

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

fraction_ai_content

float

Fraction of windows classified as AI.

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"
    }
  ]
}

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

text

string

required

The input text to classify.

Response

ai_likelihood

float

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

prediction

string

A string representing the classification.

short_prediction

string

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

dashboard_link

string

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

fraction_ai_content

float

Fraction of windows classified as AI.

max_ai_likelihood

float

Maximum AI likelihood score among all windows.

avg_ai_likelihood

float

Average AI likelihood score among all windows.

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

text

string

required

The input text to classify with extended analysis.

dashboard

boolean

default:"false"

Enable dashboard integration.

is_public

boolean

default:"true"

Control visibility in dashboard.

Response

text

string

The input text that was analyzed.

avg_ai_likelihood

float

Weighted average AI likelihood score across all windows.

max_ai_likelihood

float

Maximum AI likelihood score among all windows.

prediction

string

Long-form prediction string representing the classification.

prediction_short

string

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

headline

string

Classification headline summarizing the result.

windows

array

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

window_likelihoods

array

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

window_indices

array

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

fraction_human

float

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

fraction_ai

float

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

fraction_mixed

float

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

metadata

object

Additional metadata about the analysis.

version

string

Analysis version identifier ("adaptive_boundaries").

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"
}

​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 /