PromptSignal is an AI visibility analytics platform that monitors how major large language models like ChatGPT, Claude, Perplexity, and Gemini mention, rank, and describe brands. As consumers increasingly rely on AI assistants instead of search engines to research, compare, and evaluate products, PromptSignal helps companies understand and optimize how their brand appears in AI-generated answers. The platform provides daily monitoring across multiple models, offering visibility scores, ranking positions, sentiment analysis, and competitive benchmarks. It includes tailored prompt suggestions to test brand performance and actionable recommendations to improve positioning and perception in LLM responses. Metrics such as brand visibility, competitor tracking, sentiment score, ranking position, and prompt performance allow teams to track where their brand is winning or falling behind.