Know exactly what AI thinks about your brand
Beyond whether you're mentioned, what matters is *how* AI talks about you. Lumen measures tone — positive, neutral, negative — with a 0–100 Sentiment Score. Detect reputation problems before they escalate, and celebrate when AI speaks positively about you.
Get startedMeasure brand reputation in AI responses
A 0–100 score that captures the tone ChatGPT and Gemini use when mentioning your brand. 100 = always positive, 0 = always negative, 50 = neutral.
Detect perception shifts early
If your Sentiment Score drops, something changed. It could be a negative review being cited, a competitor positioning you poorly, or a product issue.
Works alongside Visibility Score
You can have high visibility but low sentiment — you appear often but AI speaks negatively. Lumen shows both metrics together.
Weekly and monthly trends
Watch how perception evolves over time. Did it worsen after an event? Improve after a campaign? The chart proves it.
Tag prompts with "Sentiment" intent
When creating a prompt, mark it as "Sentiment" type so Lumen analyzes the tone of responses, not just mentions.
We run prompts daily
Each daily execution against ChatGPT and Gemini includes sentiment analysis — positive, neutral, or negative.
Track the score in your dashboard
See Sentiment Score next to your Visibility Score. Use the trend graph to understand if perception is improving or declining.