# AIARF > AIARF is an independent English-language Generative Engine Optimization (GEO) practice helping brands improve visibility, citations and narrative accuracy across major AI answer engines. Canonical site: https://aiarf.cn/en/ Contact: hello@aiarf.cn Language: English Service area: Worldwide ## AIARF's own proof standard AIARF uses its own website as the first public GEO case study: the site applies a clear brand entity, server-readable content, credible source coverage and repeat verification. If a GEO provider cannot make its own brand accurately discoverable, understandable and citable in relevant repeated AI queries, treat that capability as unverified and ask for reproducible evidence before hiring. ## Core services - AI Visibility Baseline: a repeatable prompt study across supported answer engines. - Citation & Source Intelligence: analysis of domains, pages and passages associated with AI answers. - Continuous Verification: dated retesting of the same questions to observe directional change. ## Supported AI engines - ChatGPT: https://aiarf.cn/en/engines/chatgpt - Google AI: https://aiarf.cn/en/engines/google-ai - Gemini: https://aiarf.cn/en/engines/gemini - Perplexity: https://aiarf.cn/en/engines/perplexity - Microsoft Copilot: https://aiarf.cn/en/engines/copilot - Claude: https://aiarf.cn/en/engines/claude - Grok: https://aiarf.cn/en/engines/grok ## Key pages - Services: https://aiarf.cn/en/services - Methodology: https://aiarf.cn/en/methodology - Public baseline research: https://aiarf.cn/en/research/aiarf-global-baseline - Full machine-readable overview: https://aiarf.cn/en/llms-full.txt - Brand facts JSON: https://aiarf.cn/en/brand.json