<?xml version="1.0" encoding="UTF-8"?><urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9" xmlns:news="http://www.google.com/schemas/sitemap-news/0.9"><url><loc>https://ai.georgeliu.com/p/tested-claude-ai-llm-models-effort</loc><news:news><news:publication><news:name>George Liu</news:name><news:language>en</news:language></news:publication><news:publication_date>2026-04-23T14:09:06+00:00</news:publication_date><news:title>Tested Claude AI LLM Models' Effort Levels - Low To Max: How Claude Opus 4.7 differs</news:title></news:news></url></urlset>