# Citero > Citero is a GEO (Generative Engine Optimization) and AI visibility tracking platform. We help brands track, analyze, and optimize their visibility, mentions, and citations across ChatGPT, Perplexity, Google Gemini, and Claude. ## Core Features - [AI Visibility Tracking](https://citero.ai/brands) - Understand what AI models say about your brand and track brand mentions 24/7. - [Competitor Comparison](https://citero.ai/competitors) - Compare competitor citation share and find gaps to steal traffic and customers. - [Sentiment Analysis](https://citero.ai/sentiment) - Analyze brand sentiment, trust signals, and authority markers across AI engines. - [Source & Citation Identification](https://citero.ai/sources) - Discover which websites and documents AI engines use as primary references, so you can optimize them directly. - [Brand Audits](https://citero.ai/audits) - Weekly prioritized action items and brand audits showing how to rank higher in AI responses. - [Prompt Simulator](https://citero.ai/prompts) - See what AI says about your brand across different models and query contexts. ## Contact & Pricing - [Pricing](https://citero.ai/pricing) - Choose the best plan for your brand's AI visibility needs (Basic, Pro, Enterprise). - [About Us](https://citero.ai/about) - Learn more about Citero and our mission. - [Contact Customer Support](https://citero.ai/contact) - Email us at hertofhelp@gmail.com for help.