Sentiment

Score how each AI model talks about a brand, positive / neutral / negative, with the phrases driving the tone.

Overview

Not just whether a model mentions a brand, but how it talks about it. Per model you get a positive/neutral/negative split (summing to ~1) and the verbatim phrases driving it, plus an aggregate across all models queried.

Need a weekly or monthly sentiment history? Save this input with the Tracker API.

Reference

POST/v1/sentiment

$0.03 to $0.08/model · billed per model queried, so all 5 models = $0.30. Pass models to query fewer.

Parameters

`query`required	string	The query whose answers are scored for brand sentiment.
`brand`required	string	The brand to score sentiment for in each model answer.
`models`optional	array of enum (chatgpt \| claude \| perplexity \| gemini \| google_ai_overview)	Optional model subset. Omit to query the default surfaces (chatgpt, perplexity, gemini). Pass ["perplexity"] or ["perplexity","claude"] when the user names specific surfaces or wants to reduce cost. The full set is chatgpt, claude, perplexity, gemini, google_ai_overview — to query all of them, set fullSweep instead of listing them.
`fullSweep`optional	boolean	Query all five AI surfaces instead of the three default ones, adding claude and google_ai_overview. Costs more per call. Use it when the user wants complete cross-model coverage, is comparing surfaces against each other, or asks specifically about Claude or Google AI Overviews. Ignored when models is given.

Request

curl https://www.cite42.dev/api/v1/sentiment \
  -X POST \
  -H "Authorization: Bearer $CITE42_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"query":"Is Acme CRM a good CRM for startup teams?","brand":"Acme CRM"}'

Response

{
  "query": "Is Acme CRM a good CRM for startup teams?",
  "brand": "Acme CRM",
  "perModel": [
    {
      "model": "chatgpt",
      "positive": 0.55,
      "neutral": 0.35,
      "negative": 0.1,
      "phrases": [
        "modern, AI-native CRM",
        "polished UI"
      ]
    }
  ],
  "aggregate": {
    "positive": 0.55,
    "neutral": 0.35,
    "negative": 0.1,
    "phrases": [
      "modern, AI-native CRM",
      "polished UI"
    ]
  },
  "measurement": {
    "methodologyVersion": "2026-07-21-v2",
    "surfaces": [
      {
        "model": "chatgpt",
        "provider": "OpenAI",
        "access": "official-api",
        "webSearch": "auto"
      }
    ]
  },
  "requestId": "…",
  "billing": {
    "cost": {
      "microCredits": 30000,
      "usd": "0.30"
    },
    "balance": {
      "microCredits": 1336000,
      "usd": "13.36"
    }
  }
}