Model Comparison (beta)

Compare outputs from two different models on the same prompt. Returns both responses side-by-side with basic metadata. Pricing is based on the underlying models used.

POST /api/v1/compare

Model Comparison (beta)

cURL

curl --request POST \
  --url https://ninjachat.ai/api/v1/compare \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "model_a": "gpt-5",
  "model_b": "claude-sonnet-4.6",
  "prompt": "Explain the difference between supervised and unsupervised learning."
}
'

200

{
  "model_a": {
    "id": "<string>",
    "output": "<string>"
  },
  "model_b": {
    "id": "<string>",
    "output": "<string>"
  },
  "cost": {
    "this_request": "$0.006"
  },
  "metadata": {
    "latency_ms": 123
  }
}

Authorizations

Authorization · string · header · required

API key starting with nj_sk_

Body

application/json

model_a · string · required

First model ID to compare (e.g. gpt-5, claude-sonnet-4.6).

model_b · string · required

Second model ID to compare.

prompt · string · required

The input prompt to send to both models.

Required string length: 1 - 4000

temperature · number · default: 0.7

Optional sampling temperature applied to both models.

Required range: 0 <= x <= 2

Response

200

application/json

Comparison results from both models.

model_a · object

Show child attributes

model_b · object

Show child attributes

cost · object

Show child attributes

metadata · object

Show child attributes